Power distributing duplexer system

Patent metadata

Field	Value
Publication number	US-9214918-B2
Application number	US-201213716005-A
Country	US
Kind code	B2
Filing date	Dec 14, 2012
Priority date	Mar 14, 2012
Publication date	Dec 15, 2015
Grant date	Dec 15, 2015

Abstract

A power distributing duplexer system is provided. In some aspects, the system includes a duplexer configured to couple an antenna to a transmitter and a receiver. The system also includes a balancing network coupled to the duplexer. The balancing network includes a network impedance. The balancing network is configured to adjust the network impedance to match an antenna impedance of the antenna. The balancing network includes a plurality of balancing network modules coupled to the duplexer. Each of the plurality of balancing network modules is configured to receive a portion of an output voltage from the duplexer.

First claim

What is claimed is:

1. A power distributing duplexer system, the system comprising:
a duplexer configured to couple an antenna to a transmitter and a receiver; and
a balancing network coupled to the duplexer, the balancing network having a network impedance,
wherein the balancing network is configured to adjust the network impedance to match an antenna impedance of the antenna, and
wherein the balancing network comprises a plurality of balancing network modules coupled to the duplexer, each of the plurality of balancing network modules comprises a corresponding one or more balancing circuits, each of the balancing network modules being configured to receive a corresponding portion of an output voltage from the duplexer, reduce the received portion of the output voltage to obtain a corresponding step-down voltage, and provide at least a portion of the corresponding step-down voltage to each of the corresponding one or more balancing circuits.

2. The system of claim 1 , wherein the output voltage is at least 7.5 volts.

3. The system of claim 1 , wherein each of the plurality of balancing network modules comprises a corresponding transformer configured to receive the corresponding portion of the output voltage.

4. The system of claim 3 , wherein the corresponding transformer of each of the plurality of balancing network modules is configured to reduce the corresponding portion of the output voltage to generate the corresponding step-down voltage.

5. The system of claim 3 , wherein the corresponding transformer of each the plurality of balancing network modules is serially coupled to one another.

6. The system of claim 3 , wherein the corresponding transformer of each of the plurality of network balancing modules is coupled to the corresponding one or more balancing circuits.

7. The system of claim 6 , wherein the corresponding transformer of each of the plurality of network balancing modules comprises a corresponding primary inductor configured to receive the corresponding portion of the output voltage and a corresponding secondary inductor configured to generate the corresponding step-down voltage based on the corresponding portion of the output voltage.

8. The system of claim 7 , wherein the corresponding secondary inductor comprises a first end and a second end, wherein the first end is coupled to a first one of the corresponding one or more balancing circuits, and wherein the second end is coupled to a second one of the corresponding one or more balancing circuits.

9. The system of claim 6 , wherein each of the corresponding one or more balancing circuits comprises at least one switch.

10. The system of claim 1 , wherein at least one of the plurality of balancing network modules comprises a transformer coupled to the corresponding one or more balancing circuits.

11. The system of claim 1 , wherein the output voltage is evenly distributed among each of the plurality of balancing network modules.

12. The system of claim 1 , wherein the transmitter comprises a power amplifier, wherein the receiver comprises a low noise amplifier, and wherein the balancing network comprises an active component.

13. The system of claim 12 , wherein the balancing network is configured to match the antenna impedance and minimize a resistance of the active component.

14. The system of claim 1 , wherein at least one of the plurality of balancing network modules comprises a transformer configured to reduce the received corresponding portion of the output voltage to obtain the corresponding step-down voltage.

15. A method for distributing power in a duplexer system, the method comprising:
coupling, by a duplexer, an antenna to a transmitter and a receiver;
adjusting a network impedance of a balancing network coupled to the duplexer to match an antenna impedance of the antenna, the balancing network comprising a plurality of balancing network modules coupled to the duplexer, each of the plurality of balancing network modules comprising a corresponding one or more balancing circuits;
receiving, by each of the plurality of balancing network modules, a corresponding portion of an output voltage from the duplexer;
reducing, by each of the plurality of balancing network modules, the corresponding portion of the output voltage to obtain a corresponding step-down voltage; and
providing at least a portion of the corresponding step-down voltage to each of the corresponding one or more balancing circuits.

16. The method of claim 15 , wherein each of the plurality of balancing network modules comprises a corresponding transformer that receives the corresponding portion of the output voltage.

17. The method of claim 16 , wherein the reducing comprises reducing, by the corresponding transformer of each of the plurality of balancing network modules, the corresponding portion of the output voltage to generate the corresponding step-down voltage.

18. The method of claim 17 , wherein the corresponding transformer of each of the plurality of balancing network modules is coupled to the one or more balancing circuits.

19. The method of claim 15 , wherein at least one of the plurality of balancing network modules comprises a transformer, wherein the reducing comprises reducing, by the transformer, the corresponding portion of the output voltage to obtain the corresponding step-down voltage.

20. A power distributing duplexer system, the system comprising:
a duplexer configured to couple an antenna to a transmitter and a receiver; and
a balancing network coupled to the duplexer, the balancing network having a network impedance,
wherein the balancing network is configured to adjust the network impedance to match an antenna impedance of the antenna,
wherein the balancing network comprises a plurality of transformers serially coupled to the duplexer, each of the plurality of transformers being coupled to two or more balancing circuits and being configured to receive a corresponding portion of an output voltage from the duplexer and reduce the corresponding portion of the output voltage to generate a corresponding step-down voltage, each of the two or more balancing circuits being configured to receive a portion of the corresponding step-down voltage.

Assignees

• Broadcom Corp

Inventors

• Mikhemar Mohyee
• Darabi Hooman

Classifications

• H04B1/525

  with means for reducing leakage of transmitter signal into the receiver · CPC title

• H04B1/18

  Input circuits, e.g. for coupling to an antenna or a transmission line (coupling networks between antennas or lines and receivers independent of the nature of the receiver H03H) · CPC title

• H04B1/52

  Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa · CPC title

• H04B1/0458

  Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages (matching circuits in general H03H) · CPC title

• H03H7/463

  Duplexers · CPC title