CN100574142C - Array antenna communication device - Google Patents
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- CN100574142C CN100574142C CNB2004100319545A CN200410031954A CN100574142C CN 100574142 C CN100574142 C CN 100574142C CN B2004100319545 A CNB2004100319545 A CN B2004100319545A CN 200410031954 A CN200410031954 A CN 200410031954A CN 100574142 C CN100574142 C CN 100574142C
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Abstract
Adopting two-way vector modulator to seek in the array antenna communication device of circuit sharing, making and adopt the control convergence property of adaptive processing section to be improved according to transmitting-receiving.Adaptive processing section (30) will be arranged at the acceptance division (RX) in each unit antenna and be detected as correlation by the delay-time difference between the shared transceiver portion (TRX) of a plurality of unit antennas, sampling constantly control part (103) and is proofreaied and correct the sampling of the second sampling handling part (A/D) (101) according to this correlation constantly for this delay-time difference is proofreaied and correct.In view of the above, adaptive processing section can quicker and more positively be carried out adaptive control (weighting control of just two-way vector modulator (22)).
Description
Technical field
The present invention relates to a plurality of antennas of a kind of employing and control the communicator of dual-mode antenna directional diagram (pattern).
Background technology
The communicator that possesses adaptive array antenna is for well-known, this adaptive array antenna is by synthetic to suitably carried out addition by each received signal of following a plurality of antennas, and the arrival direction that is formed on useful wave has compound direction figure and have the reception diagram of directional diagram at the arrival direction of disturbing wave, and receive useful signal selectively, above-mentioned a plurality of antennas spatially make it the configuration of being separated by.And, carrying out under the occasion that sends, be preferably formed in the transmitting antenna directional diagram that useful direction has directional diagram and have directional diagram in the jamming station direction by this communicator.In view of the above, can turn to useful direction to transmitted power selectively because of forming directional diagram in useful direction, and because of making directional diagram for the jamming station, not be subjected to interference, in this communicator and useful 's the independent implements communication of group and to be difficult for the jamming station is brought on the meaning of influence be effective from this communicator towards the jamming station direction.
At this, relevant possess the communicator of adaptive array antenna in the past, illustrated with reference to Fig. 9.Also have, relevant transmitting-receiving frequency is identical, carry out the situation of the adaptive array antenna that transmitting-receiving communication and employing spatially be separated by 4 antennas 52 to be disposed herein as an example in the time-division mode, illustrated.
Processing during at first, about reception is illustrated.By the received signal of antenna 52 via the anti T-R device 54 that transmission/reception is changed (in Fig. 9, expressing the connection status when receiving), after amplifying by low noise amplifier (LNA) 56, be input in the frequency mixer 58, at this by converting IF-FRE (IF) to intersecting from the local frequency of local transmitter 60.Then, signal is amplified by IF amplifier 64 by near the frequency signal 62 selected receive frequencies of IF filter, is input in the frequency mixer 66, converts baseband signal to mixing from the local frequency of local transmitter 68 at this.Then, signal is differentiated to be necessary bandwidth by low pass filter 70, convert digital signal to by sampling handling part (A/D) 72.Received signal in 4 antennas 52 is converted into baseband signal separately like this.These signals are imported in recipient's handling part 74, and (coefficient: w1～w4) after this carries out add operation and handled as received signal to carry out characteristic weighting at this according to amplitude and phase place.Though a not only useful signal also comprises the jamming station signal in the signal received by antenna, but, receive only useful signal and can remove the jamming station signal from received signal by in adaptive antenna handling part 76, suitably determining weight coefficient (reception weighted value) according to contrast signal and received signal.Relevant this processing, the good work of the letter front page that " adopts the Adaptive Signal Processing of array antenna ", Co., Ltd.'s science and technology are published in the document in November, 1998 between chrysanthemum detailed record.
Below, the processing during relevant the transmission is illustrated.Transmit leg handling part 78 is divided into 4 with the transmission signal of being imported, and to carrying out weighting separately.At this, the weighted value during as transmission is used the weighted value when receiving sometimes.This is owing to utilizing the opposite property that sends signal and received signal and form the transmitting antenna directional diagram with directional diagram, directional diagram identical with reception diagram.Then, each signal that quilt is cut apart after the also weighting is input in the frequency mixer 84 via digital analog converter (D/A) 80, low pass filter 82, converts the IF frequency at this to by the mixing that is produced by local frequency.Then, signal is filtered by IF filter 86, after being amplified by IF amplifier 88, is input in the frequency mixer 90, converts the RF frequency at this to by the mixing that is produced by local frequency.Subsequently, signal is sent by antenna 52 via transmit power amplifier (PA) 92 and anti T-R device 54.
Yet weighted value is identical when making weighted value when sending and reception in above-mentioned conventional art.Though this is to make according to the opposite property of signal on the space after the antenna 52, with regard to radio section since send signal process sending part (TX) and received signal the acceptance division (RX) of process different, thereby property is false on the contrary.Therefore, as above-mentioned conventional art, even transmit leg handling part 78 adopt with in recipient's handling part 74 employed identical weighted values, can not obtain transmission directive property identical when receiving.That is to say, because transmission signal phase rotation amount and amplitude variations amount through TX one side are different with the phase of received signal rotation amount and the amplitude variations amount of process RX one side, even thereby in the transmitting-receiving process, carry out identical weighting, amplitude and phase place when signal amplitude when sending signal and reaching antenna through TX and phase place also are received with received signal are different.That is to say that if the identical weighting of implementation in the transmitting-receiving process, then the transmitting antenna directional diagram is different with reception diagram, and the directional diagram that the directional diagram of received signal points to when pointing to transmission with directional diagram points to different with the directional diagram sensing.
Thereby, in possessing the communicator of this adaptive array antenna, for 4 systems separately for be necessary to carry out suitable adjustment, so that the transmission signal phase rotation amount in the sending part (TX) is identical with phase of received signal rotation amount in the acceptance division (RX), and, make transmission amplitude change amount in the sending part (TX) become in the acceptance division (RX) received signal amplitude variations amount and between each antenna general fixedly multiplying power.
Under this occasion, usually adjust (recipient's calibration) for whole acceptance divisions (RX) of 4 systems, so that amplitude variations amount and the amount of phase rotation become fixed value, and the whole sending parts (TX) for 4 systems are adjusted (transmit leg calibration), so that amplitude variations amount and the amount of phase rotation become fixed value.This adjustment be in recipient's handling part 74 by to set amplitude phasing portion 94 of each system (each acceptance division) and in transmit leg handling part 78 by to set amplitude phasing portion 96 of each system (each sending part), carry out.This calibration (correction) is particularly as what set forth in No. 3332911 communique of special permission and the Te Biao 2003-501971 communique, is amplitude and phase place when being transformed into recipient or transmit leg coming the sequentially determining received signal through acceptance division (RX) in each system and the amplitude when sending signal and passing through sending part (TX) and phase place and carried out.
; according to the method for being set forth in No. 3332911 communique of special permission and the Te Biao 2003-501971 communique; because, before calibration is finished, need such problem of time so exist about the order separately of a plurality of systems converts transmission to and receives sequentially determining through out-of-date amplitude and phase place.Moreover, new generation amplitude variations, phase place rotation in the implementation process of calibration, existence is difficult to the accuracy highland and implements the such problem of calibration.And; it is extremely difficult in the calibration implementation process sending part and acceptance division being remained the situation that does not have characteristic variations generally speaking; as its countermeasure, also there are a lot of occasions to have to implement the spy and open set forth in the 2001-53663 communique the sort of often parallel when utilization and carry out common calibration and continue such calibration that spends very much time.
In addition, since from useful, the signal level in jamming station according to producing than cataclysm to useful, the distance in jamming station etc., thereby in acceptance division, be provided with automatic gain adjustment device (AGC) usually, but because this automatic gain device is set, so the variation according to incoming level produces difference to amplitude variations amount and the amount of phase rotation each other at acceptance division sometimes, in fact the calibration correction value that also has a lot of occasions specially to make can not effectively be utilized.
Moreover, occur in recipient's amplitude phasing portion that certain is unusual, become the state that can not carry out normal correction, consequent error is appended in the weighted value of recipient's handling part under this occasion.And, because the weighted value of appending after this error is further used in transmit leg, so there are transmitting antenna directional diagram and the reception diagram obviously different such problems that become that make.
Therefore, inventor etc. invents out the array antenna communication device that did not in the past have, and the so-called special 2003-49556 of hope is used for seeking above-mentioned problem and solves.This array antenna communication device is the communicator that a kind of employing contains the adaptive array antenna of a plurality of unit antennas, and this communicator possesses: RF transmitting system circuit is arranged in above-mentioned each unit antenna and comprises transmit power amplifier at least; RF receiving system circuit is the RF receiving system circuit that is arranged in parallel with above-mentioned RF transmitting system circuit in above-mentioned each unit antenna and comprise low noise amplifier at least; Two-way vector modulator is connected with above-mentioned RF transmitting system circuit and RF receiving system circuit jointly at the opposite side of unit antenna; Divide the portion that fits in, be connected with a plurality of two-way Vector Modulation portion; Transceiver portion (TRX) is connected with the above-mentioned branch portion of fitting in; Adaptive processing section, be used for controlling above-mentioned two-way vector modulator and a plurality of unit antennas are played a role as adaptive array antenna, for above-mentioned RF transmitting system circuit corresponding with the constituent parts antenna and RF receiving system circuit, the mutual difference of the mutual difference of amplitude variations amount when making signal through them and the amount of phase rotation is almost equal between the constituent parts antenna.
This array antenna communication device makes the path sharing of signal as far as possible in transmission/receiving course, realize the self adaptation action that is produced by identical parameters in the transmitting-receiving process.According to this structure, with obtain can be more easy and the such remarkable result of difference of the antenna pattern of accuracy between more the highland reduces to send/receive.
At this, relevant this array antenna communication device gives more detailed explanation with reference to Fig. 8.Fig. 8 is the block diagram of the example of major part of expression array antenna communication device 10a.Also have, the example when relevant 4 antennas of employing (unit antenna) 12 being constituted adaptive array antenna is herein illustrated.
Be input to signal in each antenna 12 under anti T-R device 14,20 and state that the recipient is connected,, be input in the two-way vector modulator 22 through band pass filter (BPF) 16 and low noise amplifier (LNA) 18 and further by anti T-R device 20., between anti T-R device 14 and anti T-R device 20, have herein, this part is called non-common circuit portion 24 according to transmitting system and receiving system circuit (just RF transmitting system circuit and RF receiving system circuit) independently respectively separately.Then, a plurality of system signals after being weighted respectively in two-way vector modulator 22 fit in portion 26 by branch and carry out add operation, receive (received signal) by transceiver portion (TRX) 28.The part of this received signal is imported in the adaptive processing section (APU) 30.
In addition,, be imported in the adaptive processing section 30 by being arranged at the acceptance division (RX) 32 each system from low noise amplifier (LNA) 18 signals of being exported.
On the other hand, baseband transmit signals fits in portion 26 by branch and is assigned to each system through transceiver portion (TRX) 28.The signal that is distributed is input to respectively in the two-way vector modulator 22, (work through anti T-R device 20, adjuster mainly as phase regulator, but also can comprise function as the amplitude adjuster) 34,, exporting by antenna 12 in addition after the power amplification by transmit power amplifier (PA) by anti T-R device 14.Also have, anti T-R device 14,20 all is connected with transmit leg during transmission.
Like this, in this structure RF with on according to transmission/reception make signal path different be the circuit structure part between anti T-R device 14 and the anti T-R device 20, just non-common circuit portion 24.But, in this non-common circuit portion 24, be provided with adjuster 34, and its formation for each system (perhaps adjusting) is, on transmit path (RF transmitting system circuit) and RX path (RF receiving system circuit), make the mutual difference of the mutual difference of amplitude variations amount and the amount of phase rotation not in 12 values that become much at one of each antenna (unit antenna), do not produce the problem that causes because of differing from of they.
In addition, to the weighted value of each system be exactly in the transmission/receiving course the value of shared two-way vector modulator 22.Therefore, according to this array antenna communication device 10a, double by adopting adjuster 34 in each system, to make characteristics of signals in transmit path/RX path become constant, and can use shared weighted value in the transmission/receiving course to each system, the transmitting antenna directional diagram is formed as identical directional diagram (antenna that just has equidirectional figure, directional diagram) with reception diagram.
Also have, for non-common circuit portion 24, preferably it constitutes and further makes in transmitting system and receiving system through equating (perhaps possessing adjustable structure important document) time of delay.This is to come according to the definition in this group delay time that equates through the frequency dependence of phase place between time of delay (more detailed is the group delay time) equal circuit.That is to say,, be used for preventing from also on other frequency, to produce phase difference according to fixed value if it is fixing that phase difference between transmitting system and the receiving system is become.That is to say, because this structure can make the phase difference between transmit path and the RX path roughly the same for more broad frequency band, so be effective especially for the sort of communicator that utilizes a plurality of frequencies.
With regard to this array antenna communication device 10a, be preferably in following apparatus (adaptive processing section 30 just is equivalent to this device in the present embodiment) is set in the receiving system, said apparatus is used for detecting difference of vibration between following two signals and phase difference and it is proofreaied and correct, this signal one is through two-way vector modulator 22, divide to fit in portion 26 and TRX28 and be input to signal in the adaptive processing section 30, the 2nd, from the signal that the leading portion (antenna 12 1 sides) of two-way vector modulator 22 distributes and the acceptance division (RX) 32 of each system of process is input to the adaptive processing section.
At this, adopt filter in order to receive essential frequency band selectively in inherent shared transceiver portion (TRX) 28 of Fig. 8 and indivedual acceptance divisions (RX) 32 corresponding, by the final signal of the extraction essential frequency band corresponding of this filter with the information communication frequency band with the constituent parts antenna.Though also depend on the time of delay of this filter such as out-of-band attenuation, drop characteristic etc. frequently, for 1 symbol (symbol) of signal generally at least with the delay of several symbols.
But the delay of relevant these several symbols in each filter individual difference is arranged, and difference according to circumstances is sometimes to about the tens of % of absolute delay amount scattering.Its result is, mutual in shared transceiver portion (TRX) 28 and indivedual acceptance divisions (RX) 32 corresponding with the constituent parts antenna, might produce error time of delay about several symbols, and there is a this problem, promptly generally speaking for carry out adaptive processing section (APU) 30 that analog digital conversion handled according to the time interval of 1/2 or 1/4 symbol for, mutual delay difference become greater to the degree that can not ignore.
Summary of the invention
Array antenna communication device involved in the present invention adopts the adaptive array antenna that contains a plurality of unit antennas, it is characterized by: possess
RF transmitting system circuit is arranged in above-mentioned each unit antenna and comprises transmit power amplifier at least;
RF receiving system circuit, it is the RF receiving system circuit that in above-mentioned each unit antenna, is arranged in parallel and comprises at least low noise amplifier with above-mentioned RF transmitting system circuit, for the above-mentioned RF transmitting system circuit corresponding with the constituent parts antenna and this RF receiving system circuit, the mutual difference of the amplitude variations amount when signal is passed through them and the mutual difference of the amount of phase rotation are set between the constituent parts antenna almost equal;
Two-way vector modulator is connected the other end relative with the unit antenna link after above-mentioned RF transmitting system circuit and the parallel connection of RF receiving system circuit;
Divide to fit in portion, be connected with a plurality of two-way vector modulators;
Transceiver portion (TRX) is connected with the above-mentioned branch portion of fitting in;
The first sampling handling part is used for the analog receiving signal of being exported from above-mentioned transceiver portion is taken a sample;
Acceptance division (RX) is connected respectively with above-mentioned RF receiving system circuit;
The second sampling handling part, (RX) is connected respectively with above-mentioned acceptance division, is used for the analog receiving signal of being exported from this acceptance division (RX) is taken a sample;
Time of delay, means for correcting was used for to proofreading and correct time of delay of at least one side among the output signal of the output signal of the above-mentioned first sampling handling part and the above-mentioned second sampling handling part;
Adaptive processing section, be used for output signal according to the handling part of taking a sample by the output signal and above-mentioned second of the above-mentioned first sampling handling part after above-mentioned time of delay, means for correcting was proofreaied and correct, control above-mentioned two-way vector modulator, make a plurality of unit antennas reduce the function of the symbol delay between transceiver portion and the acceptance division as adaptive array antenna, realization.
In addition, about the related array antenna communication device of the invention described above, it is desirable to above-mentioned time of delay means for correcting and comprise the device that the sampling of at least one side among above-mentioned first sampling handling part and the above-mentioned second sampling handling part is proofreaied and correct constantly.
In addition, about the related array antenna communication device of the invention described above, it is desirable to above-mentioned time of delay means for correcting and comprise variable shift register.
In addition, about the related array antenna communication device of the invention described above, it is desirable to above-mentioned time of delay means for correcting according to the correlation of the output signal of the handling part of taking a sample by the output signal and above-mentioned second of the above-mentioned first sampling handling part after above-mentioned time of delay, means for correcting was proofreaied and correct, to proofreading and correct time of delay.
Description of drawings
What Fig. 1 represented is an example of the related array antenna communication device circuit structure of embodiment of the present invention.
What Fig. 2 represented is an example of the related array antenna communication device major part circuit structure of first embodiment of the invention.
Fig. 3 is the key diagram that example is controlled in sampling constantly in the related array antenna communication device of expression first embodiment of the invention.
What Fig. 4 represented is an example of the related array antenna communication device major part circuit structure of second embodiment of the invention.
Fig. 5 is the key diagram that example is controlled in sampling constantly in the related array antenna communication device of expression second embodiment of the invention.
What Fig. 6 represented is the example of the related array antenna communication device of second embodiment of the invention from the output waveform of clock pulse generator.
What Fig. 7 represented is an example of the related array antenna communication device major part circuit structure of third embodiment of the invention.
Fig. 8 is the block diagram of expression array antenna communication device structure.
Fig. 9 represents is the circuit structure of communicator in the past.
Embodiment
Below, relevant preferred forms of the present invention is illustrated with reference to accompanying drawing.Fig. 1 is the block diagram of the related example of array antenna communication device 10 structures of expression present embodiment, and Fig. 2 is the block diagram of sampling handling part (A/D) 101,102, adaptive processing section 30 and the sampling moment (timing) control part 103 structures of expression array antenna communication device 10 in addition.Also have, the related array antenna communication device 10 of present embodiment comprises the structure important document identical with above-mentioned array antenna communication device 10a (Fig. 8).Thereby, for the additional prosign of these identical structure important documents, to omit the detailed description of relevant repeating part.In addition, the example when in the present embodiment relevant 4 antennas of employing (unit antenna) 12 being constituted adaptive array antenna is illustrated.
In Fig. 1, the 101st, specifying sampling constantly to taking a sample with the signal of the direct-connected acceptance division of receiving system (RX) 32, convert thereof into the second sampling handling part (A/D converter of digital signal, be expressed as A/D in the drawings), the 102nd, specifying sampling constantly the received signal of common transmit-receive letter portion 28 to be taken a sample, convert thereof into the second sampling handling part (A/D converter of digital signal, be expressed as A/D in the drawings), the 103rd, to sampling handling part (A/D) 101,102 the sampling sampling controlled of the mutual time relationship of (to its sampling clock pulse of controlling) constantly is control part constantly, and the 104th, to the supervisory control system circuit of each unit antenna 12 that comprises acceptance division (RX) 32 and comprise two-way vector modulator 22, divide the receive-transmit system circuit that fits in portion 26 and transceiver portion (TRX) 28 that the contrast signal injection portion of shared contrast signal is provided.According to this contrast signal, can carry out the correction of time of delay.
In addition, in the present embodiment as shown in Figure 2, adaptive processing section 30 comprises correlation intergal device 105 and decision circuit 106, and sampling control part 103 constantly comprises variable frequency divider 107, frequency divider 108 and clock pulse generator 109.The output signal of sampling handling part (A/D) 101 and sampling handling part (A/D) 102 is carried out correlation intergal by the correlation intergal device 105 that is in adaptive processing section 30 inside.The output signal of clock pulse generator 109 is divided down to n frequency doubly by frequency divider 108, becomes the sampling clock pulse that first sampling of taking a sample handling part (A/D) 102 is determined constantly.In addition, the output signal of frequency divider 108 is input in the variable frequency divider 107, this be divided down to (n-1) doubly, n doubly or (n+1) doubly frequency any.The output signal of this variable frequency divider 107 becomes the sampling clock pulse that second sampling of taking a sample handling part (A/D) 101 is determined constantly.
Like this, in this structure, be arranged at indivedual acceptance divisions (RX) 32 in each unit antenna 12 and each shared transceiver portion (TRX) 28 of a plurality of unit antenna 12 and all comprising RF filter, IF filter and baseband filter etc., and having respectively intrinsic time of delay.That is to say to have separately in order to receive the essential required filter of frequency band selectively, by the final signal that extracts the essential frequency band corresponding of this filter with the information communication frequency band.As mentioned above, though also depend on the time of delay of filter such as out-of-band attenuation, drop characteristic etc. frequently, for 1 symbol (symbol) of signal generally at least with the delay of several symbols.
But the delay of relevant these several symbols has individual difference in each filter, and difference according to circumstances is sometimes to about the tens of % of absolute delay amount scattering.Therefore, as mentioned above under the state of not implementing any its countermeasure, mutual in shared transceiver portion (TRX) 28 and indivedual acceptance divisions (RX) 32 corresponding with the constituent parts antenna, might produce error time of delay about several symbols, for carry out adaptive processing section (APU) 30 that analog-to-digital conversion handled according to the time interval of 1/2 or 1/4 symbol for, mutual delay difference become greater to the degree that can not ignore generally speaking.
At this, the signal that is injected from contrast signal injection portion 104 passes through indivedual acceptance divisions (RX) 32 on the one hand, converts digital signal to by sampling handling part (A/D) 101.In addition, the signal that is injected from contrast signal injection portion 104 synthesizes portion 26, common transmit-receive letter portion 28 through two-way vector modulator 22 and through over-allocation on the other hand, converts digital signal to by sampling handling part (A/D) 102.According to converting the signal after the digital signal by sampling handling part (A/D) 101 to and converting signal after the digital signal to, check the signal that only departs from indivedual acceptance divisions (RX) and common transmit-receive letter portion (TRX) delay-time difference by sampling handling part (A/D) 102.
Therefore, in the present embodiment for example owing to carry out variable control constantly by the sampling sampling of control part 103 pairs second samplings handling part (A/D) 101 constantly, thereby their mutual delay-time difference have been proofreaied and correct, between the output signal with the handling part (A/D) 101 of taking a sample in the output signal and second of the first sampling handling part (A/D) 102, reduce the error that causes because of the delay-time difference between acceptance division (RX) 32 and the transceiver portion (TRX) 28 as far as possible.According to this structure, can absorb following error time of delay in sampling handling part (A/D) 101,102 sampling intervals, prevent that the output signal of controlling employed acceptance division 32 as the directive property of adaptive array antenna from becoming the different signals of (constantly) constantly, can improve the convergence property of adaptive processing section 30 controls.
Fig. 3 expresses and carries out an example of proofreading and correct required sampling control part 103 actions constantly time of delay.As shown in Figure 3, if variable frequency divider 107 is adjusted with (n-1) frequency division, then sampling clock pulse was output in the moment of fast 1/n, the sampling of the second sampling handling part 101 shifts to an earlier date 1/n constantly, on the other hand if adjust with (n+1) frequency division, then sampling clock pulse was output in the moment of slow 1/n, and the sampling of the second sampling handling part 101 is slack-off 1/n constantly.This variable frequency divider 107 is controlled according to the result of determination of decision circuit 106.When the delay-time difference of the output signal that does not have second sampling handling part (A/D) 101 the output signal and the first sampling handling part (A/D) 102, the correlation integral value of their output signals (correlation) be a maximum.That is to say that decision circuit 106 can be controlled variable frequency divider 107, the sampling of the second sampling handling part (A/D) 101 is changed constantly, so that correlation integral value becomes maximum.Also have, variable frequency divider 107 is set to the n frequency division usually, is adjusted into (n-1) frequency division or (n+1) frequency division by 106 of decision circuits with 1 time or predetermined number of times.Also have, though in Fig. 2, only express the circuit corresponding with a unit antenna 12, this structure preferably and each antenna 4 system together be provided with, and above-mentioned being controlled in each system carried out.
Below, relevant second execution mode of the present invention is illustrated with reference to accompanying drawing.Fig. 4 is the block diagram of sampling handling part (A/D) 101,102, adaptive processing section 30 and sampling moment control part 103 structures of the related array antenna communication device 10 of expression present embodiment.Also have, the related array antenna communication device 10 of present embodiment comprises and above-mentioned array antenna communication device 10 (Fig. 1) and the identical structure important document of 10a (Fig. 8).Thereby, for the additional prosign of these identical structure important documents, to omit the detailed description of relevant repeating part.In addition, the example when also relevant 4 antennas of employing (unit antenna) 12 being constituted adaptive array antenna is in the present embodiment illustrated.
On the other hand, the output signal of clock pulse generator 113 is imported in another comparator 116.The output signal of the decision circuit 106 after this comparator 116 converts digital signal as reference voltage input to by D/A converter (D/A) 115.Subsequently, the binary output signal of comparator 116 becomes the sampling clock pulse of the second sampling handling part (A/D) 101.
What Fig. 5 represented is an example of comparator 116 actions.Fig. 5 be used for expression as the reference voltage (threshold value) of D/A converter (D/A) 115 output signals at (a) common state, (b) than high usually state and (c) than clock pulse waveform (output signal of clock pulse generator 113) and sampling clock pulse waveform under the low usually state.As what learnt by this accompanying drawing, the result of determination according to decision circuit 106 changes threshold value up and down in the present embodiment, and the control sampling constantly whereby.Particularly, when the output signal of the second sampling handling part (A/D) 101 was fast relatively, decision circuit 106 was controlled to increase threshold value, made the sampling clock pulse of the second sampling handling part (A/D) 101 postpone (b).Otherwise when the output signal of the second sampling handling part (A/D) 101 was slow relatively, decision circuit 106 was controlled to reduce threshold value, made the sampling clock pulse of the second sampling handling part (A/D) 101 shift to an earlier date (c).Also have,, as shown in Figure 6, can replace sine wave and use the signal of various waveforms though the example of relevant clock pulse generator 113 sine wave outputs is explained in Fig. 5.Also have, present embodiment also is, though only express the circuit corresponding with a unit antenna 12 in Fig. 4, this structure preferably is provided with each antenna 4 system, and above-mentioned being controlled in each system carried out.
Below, relevant the 3rd execution mode of the present invention is illustrated with reference to accompanying drawing.Fig. 7 is the block diagram of sampling handling part (A/D) 101,102, adaptive processing section 30a and sampling moment control part 103 structures of the related array antenna communication device 10 of expression present embodiment.Also have, the related array antenna communication device 10 of present embodiment comprises and above-mentioned array antenna communication device 10 (Fig. 1) and the identical structure important document of 10a (Fig. 8).Thereby, for the additional prosign of these identical structure important documents, to omit the detailed description of relevant repeating part.In addition, the example when also relevant 4 antennas of employing (unit antenna) 12 being constituted adaptive array antenna is in the present embodiment illustrated.
Though the related array antenna communication device 10 of above-mentioned first and second execution mode is being compared with the sampling time interval constantly under the little occasion of delay-time difference between acceptance division (RX) 32 and the transceiver portion (TRX) 28, be effective especially, but the related array antenna communication device 10 of present embodiment further compares under the occasion of sampling large interval constantly in delay-time difference, also can adapt to.
As shown in Figure 7, the second sampling handling part (A/D), 101 output signal via as time of delay means for correcting variable shift register 110 be input in the correlation intergal device 105.On the other hand, the first sampling handling part (A/D), 102 output signal is input in the correlation intergal device 105 via fixing shift register 111.Each correlation intergal device 105 is obtained the output signal of variable shift register 110 and the fixing correlation integral value (correlation) between the output signal of shift register 111, and decision circuit 106 is controlled the shift amount (retardation) of variable shift register 110 according to this correlation integral value.Particularly, compare under fast 1 occasion more than the sampling interval with the output signal of the first sampling handling part (A/D) 102 in the output signal of distinguishing the second sampling handling part (A/D) 101, the shift amount that decision circuit 106 increases corresponding variable shift register 110 increases retardation.Otherwise, compare under slow 1 occasion more than the sampling interval with the output signal of the first sampling handling part (A/D) 102 in the output signal of distinguishing the second sampling handling part (A/D) 101, the shift amount that decision circuit 106 reduces corresponding variable shift register 110 reduces retardation.By this formation and control, can control according to the integral multiple unit of sampling interval and by the fixing corresponding relative delay of signal of shift register 111.
Moreover this decision circuit 106 adopts illustrated structure and method in above-mentioned first or second execution mode, and relevant sampling interval is also can proofread and correct it interior time of delay.And, adopt proofread and correct the time of delay that proofread and correct time of delay and above-mentioned first or second execution mode is related of above-mentioned variable shift register 110, both can all carry out both sides, the correction of selecting to carry out the either party can be arranged according to the error (just, in the above-described embodiment according to the result of determination in the decision circuit 106 [correlation integral value]) of time of delay again.
The invention effect
As top illustrated, even be arranged at each unit antenna according to the present invention In acceptance division (RX) and the transmitting-receiving letter section (TRX) that shared by a plurality of unit antennas between Exist time delay poor, also can the degree of accuracy high and rapidly it is proofreaied and correct, therefore obtain Make the control convergence property that adopts the self adaptation handling part such remarkable result that is improved.
Claims (4)
1. an array antenna communication device adopts the adaptive array antenna that contains a plurality of unit antennas, it is characterized by: possess
A plurality of RF transmitting system circuit are arranged in above-mentioned each unit antenna respectively and comprise transmit power amplifier at least;
A plurality of RF receiving system circuit, it is the RF receiving system circuit that in above-mentioned each unit antenna, is arranged in parallel and comprises at least low noise amplifier with above-mentioned RF transmitting system circuit, for the above-mentioned RF transmitting system circuit corresponding with the constituent parts antenna and this RF receiving system circuit, the mutual difference of the amplitude variations amount when signal is passed through them and the mutual difference of the amount of phase rotation are set between the constituent parts antenna almost equal;
A plurality of two-way vector modulators are connected to the other end relative with the unit antenna link after above-mentioned RF transmitting system circuit and the parallel connection of RF receiving system circuit;
Divide to fit in portion, be connected with a plurality of two-way vector modulators;
Transceiver portion (TRX) is connected with the above-mentioned branch portion of fitting in;
The first sampling handling part is used for the analog receiving signal of being exported from above-mentioned transceiver portion is taken a sample;
A plurality of acceptance divisions (RX) are connected respectively with above-mentioned a plurality of RF receiving system circuit;
A plurality of second sampling handling parts are connected respectively with above-mentioned a plurality of acceptance divisions (RX), are used for the analog receiving signal of being exported from this acceptance division (RX) is taken a sample;
Time of delay, means for correcting was used for to proofreading and correct time of delay of at least one side among the output signal of the output signal of the above-mentioned first sampling handling part and the above-mentioned second sampling handling part;
Adaptive processing section, be used for output signal according to the handling part of taking a sample by the output signal and above-mentioned second of the above-mentioned first sampling handling part after above-mentioned time of delay, means for correcting was proofreaied and correct, control above-mentioned two-way vector modulator, make a plurality of unit antennas reduce the function of the symbol delay between transceiver portion and the acceptance division as adaptive array antenna, realization.
2. according to the array antenna communication device of claim 1 record, it is characterized by:
Above-mentioned time of delay, means for correcting comprised the device that the sampling of at least one side among above-mentioned first sampling handling part and the above-mentioned second sampling handling part is proofreaied and correct constantly.
3. according to the array antenna communication device of claim 1 or 2 records, it is characterized by:
Above-mentioned time of delay, means for correcting comprised variable shift register.
4. according to the array antenna communication device of claim 1 record, it is characterized by:
Above-mentioned time of delay, means for correcting was according to the correlation of the output signal of the handling part of being taken a sample by the output signal and above-mentioned second of the above-mentioned first sampling handling part after above-mentioned time of delay, means for correcting was proofreaied and correct, to proofreading and correct time of delay.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003094850A JP4194404B2 (en) | 2003-03-31 | 2003-03-31 | Array antenna communication device |
| JP200394850 | 2003-03-31 |
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| Publication Number | Publication Date |
|---|---|
| CN1534890A CN1534890A (en) | 2004-10-06 |
| CN100574142C true CN100574142C (en) | 2009-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100319545A Expired - Fee Related CN100574142C (en) | 2003-03-31 | 2004-03-31 | Array antenna communication device |
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| Country | Link |
|---|---|
| JP (1) | JP4194404B2 (en) |
| CN (1) | CN100574142C (en) |
| HK (1) | HK1070195A1 (en) |
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| CN105048108B (en) * | 2015-06-30 | 2018-01-23 | 南京理工大学 | Recall three reconfigurable function shared aperture antenna battle arrays in time-modulation Fan Ata directions |
| JP6422834B2 (en) * | 2015-08-20 | 2018-11-14 | 日本電信電話株式会社 | Array antenna apparatus and delay compensation method |
| JP6768618B2 (en) * | 2017-09-19 | 2020-10-14 | 株式会社東芝 | Array antenna device and array antenna processing method |
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2003
- 2003-03-31 JP JP2003094850A patent/JP4194404B2/en not_active Expired - Fee Related
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2004
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| Publication number | Publication date |
|---|---|
| JP2004304508A (en) | 2004-10-28 |
| JP4194404B2 (en) | 2008-12-10 |
| HK1070195A1 (en) | 2005-06-10 |
| CN1534890A (en) | 2004-10-06 |
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