EP1406345A1 - PIFA-antenna with additional inductance - Google Patents
PIFA-antenna with additional inductance Download PDFInfo
- Publication number
- EP1406345A1 EP1406345A1 EP02016026A EP02016026A EP1406345A1 EP 1406345 A1 EP1406345 A1 EP 1406345A1 EP 02016026 A EP02016026 A EP 02016026A EP 02016026 A EP02016026 A EP 02016026A EP 1406345 A1 EP1406345 A1 EP 1406345A1
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- Prior art keywords
- inductance
- antenna
- pifa antenna
- frequency
- pifa
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0442—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular tuning means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/335—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
- H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
- H01Q5/364—Creating multiple current paths
- H01Q5/371—Branching current paths
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/378—Combination of fed elements with parasitic elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element
Definitions
- the invention relates to a PIFA antenna for a mobile Communication terminal, with one ground point and one High frequency feed point and a method of switching a PIFA antenna between a first mobile radio standard frequency range and a second mobile radio standard frequency range.
- Such antennas are used for example in cell phones Communication connections with associated base stations a cellular network used. They are either as Monoband antenna, increasingly designed as a multiband antenna, to take into account the fact that in different Regions of the world respective cellular services different Use radio frequency ranges.
- an antenna is a frequency dependent Is a special design of the device Antenna for every possible combination of frequency bands needed. If the antenna is designed as an internal antenna as is the case with the PIFA antenna different sizes and volumes of antennas different Housing so that for the respective frequency bands in which a mobile phone should be usable, adjustments are often necessary are.
- the invention is based on the object to create a PIFA antenna that is simple with respect to at least one of their resonance frequency ranges is changeable.
- a method should also be specified to a PIFA antenna between a first mobile radio standard frequency range and a second mobile radio standard frequency range switch.
- a resonance frequency range of one PIFA antenna for example a first mobile radio standard frequency range corresponds, by means of an additional Change inductance so that the PIFA antenna has a Has resonance frequency range for a second Standard mobile radio frequency range is suitable.
- An electrical connection between the inductor and the High-frequency feed point can be designed that the inductance can be decoupled from the PIFA antenna. This makes it easy to switch between reach two mobile radio standard frequency ranges.
- the PIFA antenna is a monoband antenna trained, for example, with the help of inductance from the standard frequency range at 850 MHz to 900 MHz can switch. Training as a multiband antenna is also possible, the multi-band antenna with a single High frequency feed point can be equipped.
- the invention also relates to a method for switching a PIFA antenna between a first mobile radio standard frequency range and a second mobile radio standard frequency range, the PIFA antenna with at least one Ground contact and a high frequency feed point equipped is, that when switching an inductance between the high frequency feed point and a ground point is switched, which is dimensioned such that when the Inductance is decoupled, the PIFA antenna for the first Cellular standard frequency range is adjusted and if the Inductance is switched on, the PIFA antenna for the second Mobile radio standard frequency range is adjusted.
- the antenna 1 shows a monoband PIFA antenna, the an antenna area P1, a ground contact point G1 and has a high frequency supply point S1, via which a High frequency signal that is fed through the antenna is emitted. Between the high frequency feed point S1 and ground, an inductance L_p is connected, the Ground is electrically connected to the ground point G1.
- the inductance L_p is dimensioned such that in the case if the inductance L_p is present, the PIFA antenna for a first mobile radio standard frequency range is adapted. If a mobile phone that is equipped with the antenna operated in another mobile radio standard frequency range the antenna is equipped with inductance L_p, creating a resonant frequency range of the antenna as desired is moved.
- the size of the inductor leaves can be determined empirically without further ado and is basically in the range of a few nH.
- FIG. 2 shows an equivalent circuit diagram of that shown in Figure 1 Mono-band PIFA antenna.
- the PIFA antenna without the inductance L_p due to the parallel connection an inductance L_a and a capacitance C_a.
- a triband PIFA antenna emerges from FIG has first antenna area P1, which corresponds essentially a rectangular line is formed, but in the area one corner of the rectangle has an opening O and one right-angled second antenna area P2 essentially encloses. Both the antenna area P2 and the Antenna area P1 have associated ground contact points G1, G2 on. The second antenna area P2 is on electromagnetically the antenna area P1 coupled. At the outer edge of the antenna surface P1 a high-frequency feed point S1 is provided, from which the antenna surface P1 extends to one side over two corners and to the other side over a corner of the Rectangle extends.
- One with respect to the high frequency feed point S1 long arm of antenna area P1 is for the standard mobile radio frequency range at 850 MHz (North American GSM standard) or for the standard mobile radio frequency range provided at 900 MHz (European GSM standard).
- the one related to the high frequency feed point S1 short arm of the antenna area P1 serves together with the second antenna area P2 the GSM frequency bands at 1,800 MHz (European GSM standard) and 1,900 MHz (North American GSM standard).
- the long arm of the antenna area P1 serves the mobile radio standard frequency range at 900 MHz. Will the inductance L_p switched on, the resonance frequency range of the long Arms of the antenna area P1 shifted by 50 MHz to 850 MHz. This is particularly clear from Figure 4. With this For example, the value of the inductance L_p in the range lie between 8 and 35 nH to between the two low-frequency Switch GSM standard frequency bands or ranges.
- an inductance connection L_p can be chosen so that it affects the resonance frequency properties of the short arm of the antenna surface P1 and the antenna area P2 only in negligible Dimensions are to be expected. Because of this, by connecting the inductance L_p is the triband PIFA antenna shown in FIG. 3 simply by switching on or off the Inductance L_p with regard to its lowest mobile radio standard frequency range to be changed.
Abstract
Description
Die Erfindung bezieht sich auf eine PIFA-Antenne für ein mobiles Kommunikationsendgerät, mit einem Massepunkt und einem Hochfrequenz-Zuführungspunkt sowie auf ein Verfahren zum Umschalten einer PIFA-Antenne zwischen einem ersten Mobilfunk-Standardfrequenzbereich und einem zweiten Mobilfunk-Standardfrequenzbereich.The invention relates to a PIFA antenna for a mobile Communication terminal, with one ground point and one High frequency feed point and a method of switching a PIFA antenna between a first mobile radio standard frequency range and a second mobile radio standard frequency range.
Solche Antennen werden beispielsweise in Mobiltelefonen für Kommunikationsverbindungen mit zugehörigen Basisstationen eines Mobilfunknetzes verwendet. Sie sind entweder als Monoband-Antenne, zunehmend jedoch als Multiband-Antenne ausgebildet, um der Tatsache Rechnung zu tragen, dass in verschiedenen Regionen der Welt jeweilige Mobilfunkdienste verschiedene Funkfrequenz-Bereiche nutzen.Such antennas are used for example in cell phones Communication connections with associated base stations a cellular network used. They are either as Monoband antenna, increasingly designed as a multiband antenna, to take into account the fact that in different Regions of the world respective cellular services different Use radio frequency ranges.
Daher besteht für Hersteller von Mobiltelefonen Bedarf, diese mit Antennen auszurüsten, die im wesentlichen ungeändert weltweit benutzt werden können. Beispielsweise sind im Stand der Technik bereits sowohl Dualband- als auch Triband-Antennen entwickelt worden, die in der Lage sind, mehrere, durch Mobilfunk-Standards in jeweilige Regionen festgelegte Frequenzbereiche zu bedienen.Therefore, there is a need for mobile phone manufacturers to equip with antennas that are essentially unchanged can be used worldwide. For example, in the state the technology already has both dual-band and triband antennas have been developed that are capable of multiple, through Mobile radio standards in respective regions defined frequency ranges to use.
Beispielsweise wird für die Mobiltelefonie in Nordamerika ein Frequenzband bei 850 MHz und ein Frequenzband bei 1.900 MHz verwendet, während in Europa Frequenzbänder bei 900 MHz (GSM) und 1.800 MHz im Einsatz sind. Da eine Antenne ein frequenzabhängiges Gerät ist, wird eine besondere Gestaltung der Antenne für jede mögliche Kombination von Frequenzbändern benötigt. Sofern die Antenne als interne Antenne ausgebildet ist, wie dies bei der PIFA-Antenne der Fall ist, erfordern verschiedene Größen und Volumina der Antennen verschiedene Gehäuse, so dass für die jeweiligen Frequenzbänder, in denen ein Mobiltelefon nutzbar sein soll, häufig Anpassungen erforderlich sind.For example, is used for mobile phones in North America Frequency band at 850 MHz and a frequency band at 1900 MHz used while in Europe frequency bands at 900 MHz (GSM) and 1,800 MHz are in use. Because an antenna is a frequency dependent Is a special design of the device Antenna for every possible combination of frequency bands needed. If the antenna is designed as an internal antenna as is the case with the PIFA antenna different sizes and volumes of antennas different Housing so that for the respective frequency bands in which a mobile phone should be usable, adjustments are often necessary are.
Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, eine PIFA-Antenne zu schaffen, die auf einfache Art und Weise hinsichtlich wenigstens eines ihrer Resonanzfrequenz-Bereiche veränderbar ist. Auch soll ein Verfahren angegeben werden, um eine PIFA-Antenne zwischen einem ersten Mobilfunk-Standardfrequenzbereich und einem zweiten Mobilfunk-Standardfrequenzbereich umzuschalten.Proceeding from this, the invention is based on the object to create a PIFA antenna that is simple with respect to at least one of their resonance frequency ranges is changeable. A method should also be specified to a PIFA antenna between a first mobile radio standard frequency range and a second mobile radio standard frequency range switch.
Es ist somit vorgesehen, einen Resonanzfrequenz-Bereich einer PIFA-Antenne, der beispielsweise einem ersten Mobilfunk-Standardfrequenzbereich entspricht, mittels einer zusätzlichen Induktivität so zu ändern, dass die PIFA-Antenne einen Resonanzfrequenzbereich aufweist, der für einen zweiten Mobilfunk-Standardfrequenzbereich geeignet ist. Dies hat den Vorteil, dass am Antennenvolumen oder einer räumlichen Anordnung einzelner Antennenelemente, insbesondere bei Multiband-Antennen, keine Änderungen vorgenommen werden müssen, um ein weiteres Mobilfunk-Standardfrequenzband zu bedienen.It is therefore provided that a resonance frequency range of one PIFA antenna, for example a first mobile radio standard frequency range corresponds, by means of an additional Change inductance so that the PIFA antenna has a Has resonance frequency range for a second Standard mobile radio frequency range is suitable. This has the Advantage that the antenna volume or a spatial arrangement individual antenna elements, especially in the case of multiband antennas, no changes need to be made to make a to use another mobile radio standard frequency band.
Insbesondere bei niedrigen Frequenzbändern, wie diejenigen
für GSM 850 und EGSM 900, ist es schwierig, allein mit Hilfe
einer Änderung der Antennenkonfiguration von einem ersten
Mobilfunk-Standardfrequenzbereich zu einem zweiten Mobilfunk-Standardfrequenzbereich
umzuschalten. Insofern weist die
zusätzliche Induktivität beim Wechsel zwischen zwei Mobilfunk-Standardfrequenzbereichen
erhebliche Vorteile auf.
Außerdem ist es aufgrund der zusätzlichen Induktivität nicht
erforderlich, verschiedene Werkzeuge zur Herstellung verschiedener
Antennen vorsehen zu müssen, um zwischen Mobilfunk-Standardfrequenzbereichen
wechseln zu können. Vielmehr
gestattet es die Erfindung, eine vorgegebene PIFA-Antennenkonfiguration
beizubehalten und im Bedarfsfall um eine Induktivität
geeigneter Größe zu ergänzen, so dass der Resonanzfrequenzbereich
auf einen anderen Mobilfunk-Standardfrequenzbereich
verschoben wird.Especially with low frequency bands like those
for
Eine elektrische Verbindung zwischen der Induktivität und dem Hochfrequenz-Zuführungspunkt kann derart ausgebildet sein, dass die Induktivität von der PIFA-Antenne abkoppelbar ist. Auf diese Weise lässt sich ein einfaches Umschalten zwischen zwei Mobilfunk-Standardfrequenzbereichen erreichen.An electrical connection between the inductor and the High-frequency feed point can be designed that the inductance can be decoupled from the PIFA antenna. This makes it easy to switch between reach two mobile radio standard frequency ranges.
Die PIFA-Antenne ist im einfachsten Fall als Monoband-Antenne ausgebildet, die sich mit Hilfe der Induktivität beispielsweise von dem Standardfrequenzbereich bei 850 MHz auf 900 MHz umschalten lässt. Eine Ausbildung als Multiband-Antenne ist ebenfalls möglich, wobei die Multiband-Antenne mit einem einzigen Hochfrequenz-Zuführungspunkt ausgestattet sein kann.In the simplest case, the PIFA antenna is a monoband antenna trained, for example, with the help of inductance from the standard frequency range at 850 MHz to 900 MHz can switch. Training as a multiband antenna is also possible, the multi-band antenna with a single High frequency feed point can be equipped.
Gegenstand der Erfindung ist außerdem ein Verfahren zum Umschalten einer PIFA-Antenne zwischen einem ersten Mobilfunk-Standardfrequenzbereich und einem zweiten Mobilfunk-Standardfrequenzbereich, wobei die PIFA-Antenne mit mindestens einem Massekontakt und einem Hochfrequenzzuführungspunkt ausgestattet ist, wobei dass bei der Umschaltung eine Induktivität zwischen den Hochfrequenz-Zuführungspunkt und einen Massepunkt geschaltet wird, die so bemessen ist, dass, wenn die Induktivität abgekoppelt ist, die PIFA-Antenne für den ersten Mobilfunk-Standardfrequenzbereich angepasst ist und, wenn die Induktivität zugeschaltet ist, die PIFA-Antenne für den zweiten Mobilfunk-Standardfrequenzbereich angepasst ist.The invention also relates to a method for switching a PIFA antenna between a first mobile radio standard frequency range and a second mobile radio standard frequency range, the PIFA antenna with at least one Ground contact and a high frequency feed point equipped is, that when switching an inductance between the high frequency feed point and a ground point is switched, which is dimensioned such that when the Inductance is decoupled, the PIFA antenna for the first Cellular standard frequency range is adjusted and if the Inductance is switched on, the PIFA antenna for the second Mobile radio standard frequency range is adjusted.
Bevorzugte Ausführungsformen des Verfahrens sind in den
Unteransprüchen 8 und 9 niedergelegt und bereits anhand der
obigen Beschreibung der PIFA-Antenne erläutert worden.Preferred embodiments of the method are in the
Die Erfindung wird nachfolgend anhand von Ausführungsbeispielen noch näher erläutert. Es zeigen:
Figur 1- eine Monoband-PIFA-Antenne mit einer zusätzlichen Induktivität,
- Figur 2
- ein Ersatzschaltbild der Monoband-PIFA-Antenne von
Figur 1, - Figur 3
- eine Multiband-PIFA-Antenne mit zusätzlicher Induktivität und
Figur 4- eine grafische Darstellung des Reflektionskoeffizienten S11 der PIFA-Antenne von Figur 3 im Frequenzbereich von 800 bis 1.000 MHz.
- Figure 1
- a monoband PIFA antenna with an additional inductance,
- Figure 2
- 2 shows an equivalent circuit diagram of the monoband PIFA antenna from FIG. 1,
- Figure 3
- a multiband PIFA antenna with additional inductance and
- Figure 4
- a graphic representation of the reflection coefficient S11 of the PIFA antenna of Figure 3 in the frequency range from 800 to 1,000 MHz.
In der Figur 1 ist eine Monoband-PIFA-Antenne dargestellt, die eine Antennefläche P1, einen Massekontaktpunkt G1 und einen Hochfrequenz-Zuführungspunkt S1 aufweist, über den ein Hochfrequenzsignal zugeleitet wird, dass über die Antenne abgestrahlt wird. Zwischen den Hochfrequenz-Zuführungspunkt S1 und Masse ist eine Induktivität L_p geschaltet, wobei die Masse mit dem Massepunkt G1 elektrisch leitend verbunden ist. Die Induktivität L_p ist so bemessen, dass in dem Fall, wenn die Induktivität L_p vorhanden ist, die PIFA-Antenne für einen ersten Mobilfunk-Standardfrequenzbereich angepasst ist. Soll ein Mobiltelefon, das mit der Antenne ausgestattet ist, in einem anderen Mobilfunk-Standardfrequenzbereich betrieben werden, wird die Antenne mit der Induktivität L_p ausgestattet, wodurch ein Resonanzfrequenzbereich der Antenne wie gewünscht verschoben wird. Die Größe der Induktivität lässt sich empirisch ohne weiteres ermitteln und liegt grundsätzlich im Bereich von einigen nH.1 shows a monoband PIFA antenna, the an antenna area P1, a ground contact point G1 and has a high frequency supply point S1, via which a High frequency signal that is fed through the antenna is emitted. Between the high frequency feed point S1 and ground, an inductance L_p is connected, the Ground is electrically connected to the ground point G1. The inductance L_p is dimensioned such that in the case if the inductance L_p is present, the PIFA antenna for a first mobile radio standard frequency range is adapted. If a mobile phone that is equipped with the antenna operated in another mobile radio standard frequency range the antenna is equipped with inductance L_p, creating a resonant frequency range of the antenna as desired is moved. The size of the inductor leaves can be determined empirically without further ado and is basically in the range of a few nH.
Figur 2 zeigt ein Ersatzschaltbild der in Figur 1 dargestellten Monoband-PIFA-Antenne. In diesem Schaltbild wird die PIFA-Antenne ohne die Induktivität L_p durch die Parallelschaltung einer Induktivität L_a und einer Kapazität C_a wiedergegeben. Parallel zu der Induktivität L_a und der Kapazität C_a ist in Figur 2 die zusätzliche Induktivität L_p dargestellt, die Einfluss auf den Resonanzfrequenzbereich der Monoband-PIFA-Antenne nimmt. Figure 2 shows an equivalent circuit diagram of that shown in Figure 1 Mono-band PIFA antenna. In this circuit diagram the PIFA antenna without the inductance L_p due to the parallel connection an inductance L_a and a capacitance C_a. Parallel to the inductance L_a and the capacitance C_a, the additional inductance L_p is shown in FIG. 2, the influence on the resonance frequency range of the Monoband PIFA antenna takes.
Aus Figur 3 geht eine Triband-PIFA-Antenne hervor, die eine erste Antennenfläche P1 aufweist, die im wesentlichen entsprechend einer Rechtecklinie geformt ist, jedoch im Bereich einer Ecke des Rechtecks eine Öffnung O aufweist und eine rechtwinklig geformte zweite Antennenfläche P2 im wesentlichen umschließt. Sowohl die Antennefläche P2 als auch die Antennenfläche P1 weisen zugehörige Massekontaktpunkte G1, G2 auf. Die zweite Antennenfläche P2 ist elektromagnetisch an die Antennefläche P1 gekoppelt. Am äußeren Rand der Antennenfläche P1 ist ein Hochfrequenz-Zuführungspunkt S1 vorgesehen, von dem aus sich die Antennenfläche P1 zur einen Seite hin über zwei Ecken und zur anderen Seite hin über eine Ecke der Rechtecklinie erstreckt. Ein in bezug auf den Hochfrequenz-Zuführungspunkt S1 langer Arm der Antennenfläche P1 ist für den Mobilfunk-Standardfrequenzbereich bei 850 MHz (nordamerikanischer GSM-Standard) oder für den Mobilfunk-Standardfrequenzbereich bei 900 MHz (europäischer GSM-Standard) vorgesehen. Der in bezug auf den Hochfrequenz-Zuführungspunkt S1 kurze Arm der Antennenfläche P1 bedient gemeinsam mit der zweiten Antennenfläche P2 die GSM-Frequenzbänder bei 1.800 MHz (europäischer GSM-Standard) und 1.900 MHz (nordamerikanischer GSM-Standard).A triband PIFA antenna emerges from FIG has first antenna area P1, which corresponds essentially a rectangular line is formed, but in the area one corner of the rectangle has an opening O and one right-angled second antenna area P2 essentially encloses. Both the antenna area P2 and the Antenna area P1 have associated ground contact points G1, G2 on. The second antenna area P2 is on electromagnetically the antenna area P1 coupled. At the outer edge of the antenna surface P1 a high-frequency feed point S1 is provided, from which the antenna surface P1 extends to one side over two corners and to the other side over a corner of the Rectangle extends. One with respect to the high frequency feed point S1 long arm of antenna area P1 is for the standard mobile radio frequency range at 850 MHz (North American GSM standard) or for the standard mobile radio frequency range provided at 900 MHz (European GSM standard). The one related to the high frequency feed point S1 short arm of the antenna area P1 serves together with the second antenna area P2 the GSM frequency bands at 1,800 MHz (European GSM standard) and 1,900 MHz (North American GSM standard).
Wie im Beispiel der Figur 1 für eine Monoband-PIFA-Antenne ist bei der Triband-PIFA-Antenne der Figur 3 zwischen dem Hochfrequenz-Zuführungspunkt S1 und Masse eine Induktivität L_p vorgesehen, wobei grundsätzlich in den Figuren 3 und 1 ähnliche Bauelemente mit denselben Bezugszeichen bezeichnet werden.As in the example in FIG. 1 for a monoband PIFA antenna is in the triband PIFA antenna of Figure 3 between the High frequency feed point S1 and ground an inductor L_p is provided, in principle in FIGS. 3 and 1 Similar components with the same reference numerals become.
Wenn die zusätzliche Induktivität L_p nicht vorgesehen ist, bedient der lange Arm der Antennenfläche P1 den Mobilfunk-Standardfrequenzbereich bei 900 MHz. Wird die Induktivität L_p zugeschaltet, wird der Resonanzfrequenzbereich des langen Arms der Antennenfläche P1 um 50 MHz auf 850 MHz verschoben. Dies geht besonders deutlich aus der Figur 4 hervor. Bei diesem Beispiel kann der Wert der Induktivität L_p im Bereich zwischen 8 und 35 nH liegen, um zwischen den beiden niederfrequenten GSM-Standardfrequenzbändern bzw. -bereichen umzuschalten.If the additional inductance L_p is not provided, the long arm of the antenna area P1 serves the mobile radio standard frequency range at 900 MHz. Will the inductance L_p switched on, the resonance frequency range of the long Arms of the antenna area P1 shifted by 50 MHz to 850 MHz. This is particularly clear from Figure 4. With this For example, the value of the inductance L_p in the range lie between 8 and 35 nH to between the two low-frequency Switch GSM standard frequency bands or ranges.
Es ist hervorzuheben, dass eine Zuschaltung der Induktivität L_p so gewählt werden kann, dass Auswirkungen auf die Resonanzfrequenzeigenschaften des kurzen Arms der Antennefläche P1 und der Antennenfläche P2 nur in zu vernachlässigendem Maße zu erwarten sind. Aufgrund dessen kann durch Zuschaltung der Induktivität L_p die in Figur 3 dargestellte Triband-PIFA-Antenne einfach durch Zuschalten oder Fortlassen der Induktivität L_p hinsichtlich ihres niedrigsten Mobilfunk-Standardfrequenzbereiches verändert werden.It should be emphasized that an inductance connection L_p can be chosen so that it affects the resonance frequency properties of the short arm of the antenna surface P1 and the antenna area P2 only in negligible Dimensions are to be expected. Because of this, by connecting the inductance L_p is the triband PIFA antenna shown in FIG. 3 simply by switching on or off the Inductance L_p with regard to its lowest mobile radio standard frequency range to be changed.
Claims (9)
dadurch gekenzeichnet, dass
zwischen dem Hochfrequenz-Zuführungspunkt (S1) und dem Massepunkt (G1; G2) eine Induktivität (L_p) zur Änderung einer Resonanzfrequenz der PIFA-Antenne geschaltet ist.PIFA antenna for a mobile communication terminal, with a ground point (G1; G2) and a high-frequency feed point (S1),
characterized by the fact that
an inductance (L_p) for changing a resonance frequency of the PIFA antenna is connected between the high-frequency feed point (S1) and the ground point (G1; G2).
dadurch gekennzeichnet, dass
eine elektrische Verbindung zwischen der Induktivität (L_p) und dem Hochfrequenz-Zuführungspunkt (S1) derart ausgebildet ist, dass die Induktivität (L_p) von der PIFA-Antenne abkoppelbar ist.PIFA antenna according to claim 1,
characterized in that
an electrical connection between the inductor (L_p) and the high-frequency feed point (S1) is formed such that the inductor (L_p) can be decoupled from the PIFA antenna.
dadurch gekennzeichnet, dass
die Induktivität (L_p) so bemessen ist, dass die Resonanzfrequenz der PIFA-Antenne im wesentlichen einem Frequenzbereich eines Mobilfunk-Standards entspricht.PIFA antenna according to one of claims 1 or 2,
characterized in that
the inductance (L_p) is such that the resonance frequency of the PIFA antenna essentially corresponds to a frequency range of a mobile radio standard.
dadurch gekennzeichnet, dass
sie als Multiband-Antenne ausgebildet ist.PIFA antenna according to claim 3,
characterized in that
it is designed as a multiband antenna.
dadurch gekennzeichnet, dass
die Induktivität (L_p) so bemessen ist, dass sie im wesentlichen eine Resonanzfrequenz eines niederfrequentesten Frequenzbandes beeinflusst.PIFA antenna according to claim 4,
characterized in that
the inductance (L_p) is dimensioned such that it essentially influences a resonance frequency of a low-frequency frequency band.
dadurch gekennzeichnet, dass
die Induktivität (L_p) so gemessen ist, dass die niedrigste Resonanzfrequenz der PIFA-Antenne mit der Induktivität (L_p) im wesentlichen bei 850 MHz und ohne die Induktivität (L_p) im wesentlichen bei 900 MHz liegt.PIFA antenna according to claim 5,
characterized in that
the inductance (L_p) is measured such that the lowest resonance frequency of the PIFA antenna with the inductance (L_p) is essentially at 850 MHz and without the inductance (L_p) is essentially at 900 MHz.
dadurch gekennzeichnet, dass
bei der Umschaltung eine Induktivität (L_p) zwischen den Hochfrequenz-Zuführungspunkt (G1; G2) und einen Massepunkt (G1; G2) geschaltet wird, die so bemessen ist,
dass, wenn die Induktivität (L_p) abgekoppelt ist, die PIFA-Antenne für den ersten Mobilfunk-Standardfrequenzbereich angepasst ist und,
wenn die Induktivität (L_p) zugeschaltet ist, die PIFA-Antenne für den zweiten Mobilfunk-Standardfrequenzbereich angepasst ist.Method for switching a PIFA antenna between a first mobile radio standard frequency range and a second mobile radio standard frequency range, the PIFA antenna being equipped with at least one ground point (G1; G2) and one high-frequency feed point (S1),
characterized in that
an inductance (L_p) is switched between the high-frequency feed point (G1; G2) and a ground point (G1; G2) during the switchover, which is dimensioned in such a way
that when the inductance (L_p) is decoupled, the PIFA antenna is adapted for the first mobile radio standard frequency range and,
if the inductance (L_p) is switched on, the PIFA antenna is adapted for the second mobile radio standard frequency range.
dadurch gekennzeichnet, dass
die Umschaltung zwischen einem GSM-Band bei 850 MHz und einem EGSM-Band bei 900 MHz erfolgt.Method according to claim 7,
characterized in that
the switchover between a GSM band at 850 MHz and an EGSM band at 900 MHz takes place.
dadurch gekennzeichnet, dass
der Wert der Induktivität (L_p) im Bereich von 8 bis 35 nH liegt.A method according to claim 8,
characterized in that
the value of the inductance (L_p) is in the range from 8 to 35 nH.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE50206584T DE50206584D1 (en) | 2002-07-18 | 2002-07-18 | PIFA antenna with additional inductance |
| EP02016026A EP1406345B1 (en) | 2002-07-18 | 2002-07-18 | PIFA-antenna with additional inductance |
| AT02016026T ATE324680T1 (en) | 2002-07-18 | 2002-07-18 | PIFA ANTENNA WITH ADDITIONAL INDUCTIVITY |
| DK02016026T DK1406345T3 (en) | 2002-07-18 | 2002-07-18 | PIFA antenna with additional inductance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP02016026A EP1406345B1 (en) | 2002-07-18 | 2002-07-18 | PIFA-antenna with additional inductance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1406345A1 true EP1406345A1 (en) | 2004-04-07 |
| EP1406345B1 EP1406345B1 (en) | 2006-04-26 |
Family
ID=31985017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02016026A Expired - Lifetime EP1406345B1 (en) | 2002-07-18 | 2002-07-18 | PIFA-antenna with additional inductance |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1406345B1 (en) |
| AT (1) | ATE324680T1 (en) |
| DE (1) | DE50206584D1 (en) |
| DK (1) | DK1406345T3 (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1592084A1 (en) * | 2004-04-26 | 2005-11-02 | LK Products Oy | Antenna element and method for manufacturing the same |
| WO2007040639A1 (en) * | 2005-09-29 | 2007-04-12 | Sony Ericsson Mobile Communications Ab | Multi-band pifa |
| US7903035B2 (en) | 2005-10-10 | 2011-03-08 | Pulse Finland Oy | Internal antenna and methods |
| US9509054B2 (en) | 2012-04-04 | 2016-11-29 | Pulse Finland Oy | Compact polarized antenna and methods |
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| US9647338B2 (en) | 2013-03-11 | 2017-05-09 | Pulse Finland Oy | Coupled antenna structure and methods |
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| US9979078B2 (en) | 2012-10-25 | 2018-05-22 | Pulse Finland Oy | Modular cell antenna apparatus and methods |
| US10069209B2 (en) | 2012-11-06 | 2018-09-04 | Pulse Finland Oy | Capacitively coupled antenna apparatus and methods |
| US10079428B2 (en) | 2013-03-11 | 2018-09-18 | Pulse Finland Oy | Coupled antenna structure and methods |
| US10211538B2 (en) | 2006-12-28 | 2019-02-19 | Pulse Finland Oy | Directional antenna apparatus and methods |
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| FI20055420A0 (en) | 2005-07-25 | 2005-07-25 | Lk Products Oy | Adjustable multi-band antenna |
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- 2002-07-18 DK DK02016026T patent/DK1406345T3/en active
- 2002-07-18 DE DE50206584T patent/DE50206584D1/en not_active Expired - Fee Related
- 2002-07-18 EP EP02016026A patent/EP1406345B1/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1592084A1 (en) * | 2004-04-26 | 2005-11-02 | LK Products Oy | Antenna element and method for manufacturing the same |
| WO2007040639A1 (en) * | 2005-09-29 | 2007-04-12 | Sony Ericsson Mobile Communications Ab | Multi-band pifa |
| US7324054B2 (en) | 2005-09-29 | 2008-01-29 | Sony Ericsson Mobile Communications Ab | Multi-band PIFA |
| US7903035B2 (en) | 2005-10-10 | 2011-03-08 | Pulse Finland Oy | Internal antenna and methods |
| US10211538B2 (en) | 2006-12-28 | 2019-02-19 | Pulse Finland Oy | Directional antenna apparatus and methods |
| US9761951B2 (en) | 2009-11-03 | 2017-09-12 | Pulse Finland Oy | Adjustable antenna apparatus and methods |
| US9917346B2 (en) | 2011-02-11 | 2018-03-13 | Pulse Finland Oy | Chassis-excited antenna apparatus and methods |
| US9673507B2 (en) | 2011-02-11 | 2017-06-06 | Pulse Finland Oy | Chassis-excited antenna apparatus and methods |
| US9509054B2 (en) | 2012-04-04 | 2016-11-29 | Pulse Finland Oy | Compact polarized antenna and methods |
| US9979078B2 (en) | 2012-10-25 | 2018-05-22 | Pulse Finland Oy | Modular cell antenna apparatus and methods |
| US10069209B2 (en) | 2012-11-06 | 2018-09-04 | Pulse Finland Oy | Capacitively coupled antenna apparatus and methods |
| US9647338B2 (en) | 2013-03-11 | 2017-05-09 | Pulse Finland Oy | Coupled antenna structure and methods |
| US10079428B2 (en) | 2013-03-11 | 2018-09-18 | Pulse Finland Oy | Coupled antenna structure and methods |
| US9634383B2 (en) | 2013-06-26 | 2017-04-25 | Pulse Finland Oy | Galvanically separated non-interacting antenna sector apparatus and methods |
| US9680212B2 (en) | 2013-11-20 | 2017-06-13 | Pulse Finland Oy | Capacitive grounding methods and apparatus for mobile devices |
| US9948002B2 (en) | 2014-08-26 | 2018-04-17 | Pulse Finland Oy | Antenna apparatus with an integrated proximity sensor and methods |
| US9973228B2 (en) | 2014-08-26 | 2018-05-15 | Pulse Finland Oy | Antenna apparatus with an integrated proximity sensor and methods |
| US9722308B2 (en) | 2014-08-28 | 2017-08-01 | Pulse Finland Oy | Low passive intermodulation distributed antenna system for multiple-input multiple-output systems and methods of use |
| US9906260B2 (en) | 2015-07-30 | 2018-02-27 | Pulse Finland Oy | Sensor-based closed loop antenna swapping apparatus and methods |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50206584D1 (en) | 2006-06-01 |
| ATE324680T1 (en) | 2006-05-15 |
| EP1406345B1 (en) | 2006-04-26 |
| DK1406345T3 (en) | 2006-08-21 |
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