CA2380322A1 - High frequency network communications over various lines - Google Patents
High frequency network communications over various lines Download PDFInfo
- Publication number
- CA2380322A1 CA2380322A1 CA002380322A CA2380322A CA2380322A1 CA 2380322 A1 CA2380322 A1 CA 2380322A1 CA 002380322 A CA002380322 A CA 002380322A CA 2380322 A CA2380322 A CA 2380322A CA 2380322 A1 CA2380322 A1 CA 2380322A1
- Authority
- CA
- Canada
- Prior art keywords
- communications apparatus
- transformer
- electric
- signals
- modulated carrier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0264—Arrangements for coupling to transmission lines
- H04L25/0266—Arrangements for providing Galvanic isolation, e.g. by means of magnetic or capacitive coupling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/542—Systems for transmission via power distribution lines the information being in digital form
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
- H04B2203/5425—Methods of transmitting or receiving signals via power distribution lines improving S/N by matching impedance, noise reduction, gain control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5429—Applications for powerline communications
- H04B2203/5445—Local network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5462—Systems for power line communications
- H04B2203/5483—Systems for power line communications using coupling circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5462—Systems for power line communications
- H04B2203/5491—Systems for power line communications using filtering and bypassing
Abstract
An apparatus for high frequency electrical line communication includes a transmitter, a receiver, a modem (14), and a coupler (16) at each of two or more locations along an electrical line (18). The couplers (16) have capacitive circuits serially connected with an air-core or dielectric-core transformer. The capacitive circuits resonate with the transformer at a preselected frequency. The coupler eliminates noise and is matched to the characteristic impedance of the line at the preselected frequency, which linearizes communication on the line and allows high speed data and voice communication over long distances.
Claims (40)
1. A communications apparatus for communicating electric signals through one or more electric lines having a characteristic impedance comprising:
a modulator which modulates the electric signals to produce a modulated carrier signal having a preselected frequency greater than or equal to 200 Mhz;
a transmitter electrically connected to the modulator and having an output impedance, said transmitter transmitting the modulated carrier signal; and a coupler connected between the electric line and the transmitter, said coupler matching the output impedance of the transmitter to the characteristic impedance of the electric line and communicating the modulated carrier signal to the electric line without substantial phase distortion.
a modulator which modulates the electric signals to produce a modulated carrier signal having a preselected frequency greater than or equal to 200 Mhz;
a transmitter electrically connected to the modulator and having an output impedance, said transmitter transmitting the modulated carrier signal; and a coupler connected between the electric line and the transmitter, said coupler matching the output impedance of the transmitter to the characteristic impedance of the electric line and communicating the modulated carrier signal to the electric line without substantial phase distortion.
2. The communications apparatus of claim 1 wherein the electric line is selected from the group comprising high-voltage power lines, medium-voltage power lines, low-voltage power lines, coaxial cables, twisted pair lines and phone lines.
3. The communications apparatus of claim 1 wherein the coupler comprises a transformer having a non-magnetic core, said transformer communicating the modulated carrier signal to the electric line without substantial phase distortion, and a coupling capacitor, which resonates with the transformer at the preselected frequency.
4. The communications apparatus of claim 3 wherein the transformer is an air-core transformer.
5. The communications apparatus of claim 4 wherein the transformer comprises:
a primary coil having a first diameter;
a secondary coil having a second smaller diameter, said second coil extending coaxially within the primary coil such that an air gap is created between the primary coil and the secondary coil; and a capacitor adapted to be connected between the primary coil and the electric line, wherein the primary coil and the capacitor are matched to the characteristic impedance of the electric line at a preselected bandwidth.
a primary coil having a first diameter;
a secondary coil having a second smaller diameter, said second coil extending coaxially within the primary coil such that an air gap is created between the primary coil and the secondary coil; and a capacitor adapted to be connected between the primary coil and the electric line, wherein the primary coil and the capacitor are matched to the characteristic impedance of the electric line at a preselected bandwidth.
6. The communications apparatus of claim 3 wherein the transformer is a dielectric-core transformer.
7. The communications apparatus of claim 6 wherein the core of the transformer is filled with a resin material.
8. The communications apparatus of claim 3 wherein the transformer is a solid-state transformer.
9. The communications apparatus of claim 3 wherein the transformer comprises:
a first conductive plate;
a second conductive plate placed underneath and spaced apart from the first conductive plate;
a capacitor adapted to be connected between the first conductive plate and the electric line, wherein the first conductive plate and the capacitor are matched to the characteristic impedance of the electric line at a preselected bandwidth.
a first conductive plate;
a second conductive plate placed underneath and spaced apart from the first conductive plate;
a capacitor adapted to be connected between the first conductive plate and the electric line, wherein the first conductive plate and the capacitor are matched to the characteristic impedance of the electric line at a preselected bandwidth.
10. The communications apparatus of claim 9 wherein the first conductive plate and the second conductive plate separated by chip material.
11. The communications apparatus of claim 9 wherein the first conductive plate and the second conductive plate are circular in shape.
12. The communications apparatus of claim 10 wherein the first conductive plate and the second conductive plate are formed directly in a chip by deposition of metallic layers onto the chip.
13. The communications apparatus of claim 10 wherein the first conductive plate and the second conductive plate are formed from doped silicon.
14. The communications apparatus of claim 4 wherein the transformer comprises:
a first metal pipe having a first diameter;
a second metal pipe having a second smaller diameter, said second pipe extending coaxially within the first pipe such that an air gap is created between the first pipe and the second pipe; and a capacitor adapted to be connected between the first pipe and the electric line, wherein the first pipe and the capacitor are matched to the characteristic impedance of the electric line at a preselected bandwidth.
a first metal pipe having a first diameter;
a second metal pipe having a second smaller diameter, said second pipe extending coaxially within the first pipe such that an air gap is created between the first pipe and the second pipe; and a capacitor adapted to be connected between the first pipe and the electric line, wherein the first pipe and the capacitor are matched to the characteristic impedance of the electric line at a preselected bandwidth.
15. The communications apparatus of claim 1 wherein the electric signals are Ethernet signals.
16. The communications apparatus of claim 15 wherein the electric signals are selected from the group comprising 10 Mbps Ethernet signals, 100 Mpbs Ethernet signals and 1 Gbps Ethernet signals.
17. The communications apparatus of claim 1 wherein the preselected frequency is greater than or equal to 1 Ghz.
18. The communications apparatus of claim 15 wherein the electric signals are connected to a network backbone via an Ethernet HUB/switch.
19. The communications apparatus of claim 18 wherein the network backbone is selected from the group comprising the Internet, an Ethernet wide area network (WAN), an Ethernet local area network (LAN), a telephone or telecommunications center, and a television broadcasting station.
20. A communications apparatus for communicating electric signals through one or more electric lines having a characteristic impedance comprising:
a modulator which modulates the electric signals to produce a modulated carrier signal having a first preselected frequency greater than or equal to 200 Mhz;
a transmitter electrically connected to the modulator and having an output impedance, said transmitter transmitting the modulated carrier signal;
a first coupler connected between the electric line and the transmitter, said coupler matching the output impedance of the transmitter to the characteristic impedance of the electric line and communicating the modulated carrier signal to the electric line without substantial phase distortion;
a receiver having an input impedance, said receiver receiving the modulated carrier signal;
a demodulator electrically connected to the receiver, said demodulator producing a demodulated carrier signal having a second preselected frequency greater than or equal to 200 Mhz by demodulating the modulated carrier signal; and a second coupler connected between the electric line and the receiver for matching the input impedance of the receiver to the characteristic impedance of the electric line and communicating the modulated carrier signal to the receiver without significant phase distortion.
a modulator which modulates the electric signals to produce a modulated carrier signal having a first preselected frequency greater than or equal to 200 Mhz;
a transmitter electrically connected to the modulator and having an output impedance, said transmitter transmitting the modulated carrier signal;
a first coupler connected between the electric line and the transmitter, said coupler matching the output impedance of the transmitter to the characteristic impedance of the electric line and communicating the modulated carrier signal to the electric line without substantial phase distortion;
a receiver having an input impedance, said receiver receiving the modulated carrier signal;
a demodulator electrically connected to the receiver, said demodulator producing a demodulated carrier signal having a second preselected frequency greater than or equal to 200 Mhz by demodulating the modulated carrier signal; and a second coupler connected between the electric line and the receiver for matching the input impedance of the receiver to the characteristic impedance of the electric line and communicating the modulated carrier signal to the receiver without significant phase distortion.
21. The communications apparatus of claim 20 wherein the first coupler comprises a first transformer having a non-magnetic core, said transformer communicating the modulated carrier signal to the electric line without substantial phase distortion, and a coupling capacitor, which resonates with the transformer at the preselected frequency, and the second coupler comprises a second transformer having a non-magnetic core, which communicates the modulated carrier signal to the receiver without substantial phase distortion, and a coupling capacitor, which resonates with the transformer at the preselected frequency.
22. The communications apparatus of claim 21 wherein the first transformer and the second transformer are air-core transformers.
23. The communications apparatus of claim 21 wherein the first transformer and the second transformer are dielectric-core transformers.
24. The communications apparatus of claim 21 wherein the first transformer and the second transformer are solid-state transformers.
25. The communications apparatus of claim 20 wherein the first preselected frequency and the second preselected frequency are greater than or equal to 1 GHz.
26. The communications apparatus of claim 20 wherein the electric signals are Ethernet signals.
27. The communications apparatus of claim 26 wherein the electric signals are selected from the group comprising 10 Mbps Ethernet signals, 100 Mpbs Ethernet signals and 1 Gbps Ethernet signals.
28. The communications apparatus of claim 26 wherein the electric signals are connected to a network backbone via an Ethernet HUB/switch.
29. The communications apparatus of claim 28 wherein the network backbone is selected from the group comprising the Internet, an Ethernet wide area network (WAN), an Ethernet local area network (LAN), a telephone or telecommunications center, and a television broadcasting station.
30. A communications apparatus for communicating electric signals through one or more electric lines having a characteristic impedance comprising:
a first modem which produces a first modulated carrier signal having a first preselected frequency greater than or equal to 200 MHz and demodulates a second modulated carrier signal having a second preselected frequency greater than or equal to 200 MHz;
a first transmitter having an output impedance, said transmitter connected to the first modem and transmitting the first modulated carrier signal;
a first receiver having an input impedance, said receiver connected to the first modem and receiving the second modulated carrier signal;
a first coupler connected between the electric lines and the first transmitter and the first receiver, said first coupler matching the output impedance of the first transmitter and the input impedance of the first receiver to the characteristic impedance of the electric lines and communicating the first and second modulated carrier signals without substantial phase distortion;
a second modem which produces the second modulated carrier signal and demodulates the first modulated carrier signal;
a second transmitter having an output impedance, said transmitter connected to the second modem and transmitting the second modulated carrier signal;
a second receiver having an input impedance, said receiver connected to the second modem and receiving the first modulated carrier signal; and a second coupler connected between the electric lines and the second transmitter and the second receiver, said second coupler matching the output impedance of the second transmitter and the input impedance of the second receiver to the characteristic impedance of the electric lines and communicating the first and second modulated carrier signals without substantial phase distortion.
a first modem which produces a first modulated carrier signal having a first preselected frequency greater than or equal to 200 MHz and demodulates a second modulated carrier signal having a second preselected frequency greater than or equal to 200 MHz;
a first transmitter having an output impedance, said transmitter connected to the first modem and transmitting the first modulated carrier signal;
a first receiver having an input impedance, said receiver connected to the first modem and receiving the second modulated carrier signal;
a first coupler connected between the electric lines and the first transmitter and the first receiver, said first coupler matching the output impedance of the first transmitter and the input impedance of the first receiver to the characteristic impedance of the electric lines and communicating the first and second modulated carrier signals without substantial phase distortion;
a second modem which produces the second modulated carrier signal and demodulates the first modulated carrier signal;
a second transmitter having an output impedance, said transmitter connected to the second modem and transmitting the second modulated carrier signal;
a second receiver having an input impedance, said receiver connected to the second modem and receiving the first modulated carrier signal; and a second coupler connected between the electric lines and the second transmitter and the second receiver, said second coupler matching the output impedance of the second transmitter and the input impedance of the second receiver to the characteristic impedance of the electric lines and communicating the first and second modulated carrier signals without substantial phase distortion.
31. The communications apparatus of claim 30 wherein the first and second couplers each comprise two LC circuits.
32. The communications apparatus of claim 31 wherein each of the LC circuits comprises at least one capacitor connected in series with the electric lines and a transformer having a non-magnetic core.
33. The communications apparatus of claim 32 wherein the transformer is an air-core transformer.
34. The communications apparatus of clam 32 wherein the transformer is a dielectric-core transformer.
35. The communications apparatus of claim 30 wherein the first preselected frequency and the second preselected frequency are greater than or equal to 1 GHz.
36. The communications apparatus of claim 30 wherein the electric signals are Ethernet signals.
37. The communications apparatus of claim 36 wherein the electric signals are selected from the group comprising 10 Mbps Ethernet signals, 100 Mpbs Ethernet signals and 1 Gbps Ethernet signals.
38. The communications apparatus of claim 36 wherein the electric signals are connected to a network backbone via an Ethernet HUB/switch.
39. The communications apparatus of claim 38 wherein the network backbone is selected from the group comprising the Internet, an Ethernet wide area network (WAN), an Ethernet local area network (LAN), a telephone or telecommunications center, and a television broadcasting station.
40. A coupler for use in a communications apparatus for communicating electric signals through one or more electric lines having a characteristic impedance, said coupler comprising:
a solid-state transformer having a primary side;
a capacitor adapted to be connected between the primary side and the electric line, wherein the primary side and the capacitor are matched to the characteristic impedance of the electric line at a preselected bandwidth.
a solid-state transformer having a primary side;
a capacitor adapted to be connected between the primary side and the electric line, wherein the primary side and the capacitor are matched to the characteristic impedance of the electric line at a preselected bandwidth.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/576,981 US6396392B1 (en) | 2000-05-23 | 2000-05-23 | High frequency network communications over various lines |
| US09/576,981 | 2000-05-23 | ||
| PCT/US2001/016381 WO2001091437A1 (en) | 2000-05-23 | 2001-05-22 | High frequency network communications over various lines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2380322A1 true CA2380322A1 (en) | 2001-11-29 |
| CA2380322C CA2380322C (en) | 2010-01-12 |
Family
ID=24306801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002380322A Expired - Lifetime CA2380322C (en) | 2000-05-23 | 2001-05-22 | High frequency network communications over various lines |
Country Status (19)
| Country | Link |
|---|---|
| US (1) | US6396392B1 (en) |
| EP (1) | EP1208692B1 (en) |
| JP (3) | JP2003534726A (en) |
| KR (1) | KR100806683B1 (en) |
| CN (2) | CN1189010C (en) |
| AT (1) | ATE554576T1 (en) |
| AU (1) | AU777724B2 (en) |
| BR (1) | BRPI0106656B1 (en) |
| CA (1) | CA2380322C (en) |
| ES (1) | ES2392060T3 (en) |
| HU (1) | HU224948B1 (en) |
| MX (1) | MXPA02000885A (en) |
| MY (1) | MY126098A (en) |
| PL (1) | PL210711B1 (en) |
| RU (1) | RU2254681C2 (en) |
| SA (1) | SA01220201B1 (en) |
| TW (1) | TW511341B (en) |
| WO (1) | WO2001091437A1 (en) |
| ZA (1) | ZA200201397B (en) |
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- 2001-05-22 HU HU0202839A patent/HU224948B1/en not_active IP Right Cessation
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- 2001-05-22 MY MYPI20012408A patent/MY126098A/en unknown
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| MXPA02000885A (en) | 2003-07-14 |
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