Triplexer systems and methods for use in wireless communications device

• US 20040207484A1
• Filed: 04/16/2003
• Published: 10/21/2004
• Est. Priority Date: 04/16/2003
• Status: Active Grant

• Current Assignee: Kyocera Corporation
• Original Assignee: Kyocera Wireless Corporation (Kyocera Corporation)
• Inventors: Tran, Allen, Forrester, Tim
• Granted Patent: US 6,980,067 B2
• Time in Patent Office: Days
• US Class Current: 333/133
• CPC Class Codes: H04B 1/005 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
• CPC Class Codes: H04B 1/006 using switches for selecting the desired band H04B1/0057 takes precedence
• CPC Class Codes: H04B 1/406 with more than one transmission mode, e.g. analog and digital modes

Abstract

A wireless communication device comprises a plurality of receive signal paths, each of the receive signal paths is configured to receive signals in a certain frequency bandwidth. The communication device also comprises an amplifier coupled with each of the plurality of receive signal paths. The amplifier is configured to amplify the receive signals associated with each of the plurality of receive signal paths.

Claims

1. A triplexer for use in a wireless communication device, the triplexer comprising:

an antenna interface;

a filter configured to operate at a low frequency band and to communicate a transmit and receive signal with an antenna through the antenna interface;

a filter configured to operate at a mid frequency band and to communicate a transmit and receive signal with the antenna through the antenna interface; and

a filter configured to operate at a high frequency band and to communicate a transmit and receive signal with the antenna through the antenna interface.

2. The triplexer of claim 1, wherein each of the filters is further configured to isolate the associated transmit and receive signal from each other.

3. The triplexer of claim 1, wherein each of the filters is further configured to reject signals associated with the other filters.

4. The triplexer of claim 1, wherein at least one of the filters comprises inductor and capacitor components.

5. The triplexer of claim 1, wherein at least one of the filters comprises a SAW device.

6. The triplexer of claim 1, wherein at least one of the filters comprises a FBAR device.

7. The triplexer of claim 1, wherein the triplexer is a FBAR device.

8. The triplexer of claim 1, wherein the high frequency band corresponds to a PCS frequency band.

9. The triplexer of claim 1, wherein the mid frequency band corresponds to a GPS frequency band.

10. The triplexer of claim 1, wherein the low frequency band corresponds to a cellular frequency band.

11. A triplexer, comprising:

an antenna interface;

a filter configured to operate at a low frequency band corresponding to a cellular band and to communicate a cellular transmit and a cellular receive signal with an antenna through the antenna interface;

a filter configured to work a mid frequency band corresponding to a GPS frequency band and to communicate a GPS transmit and a GPS receive signal with the antenna through the antenna interface; and

a filter configured to work at a high frequency band corresponding to a PCS frequency band and to communicate a PCS transmit and a PCS receive signal with the antenna through the antenna interface.

12. The triplexer of claim 11, wherein the triplexer is a FBAR device.

13. The triplexer of claim 11, wherein the filter configured to operate at the mid frequency band comprises a SAW device.

14. The triplexer of claim 11, wherein at least one of the filters configured to operate at the high and low frequency bands comprises inductor and capacitor components.

15. A wireless communication device, comprising:

an antenna configured to communicate signals in three communication bands; and

a triplexer electrically coupled with the antenna, the triplexer comprising;

an antenna interface configured to interface the triplexer with the antenna;

a filter configured to operate at a low frequency band and to communicate a transmit and receive signal with the antenna through the antenna interface;

a filter configured to operate at a mid frequency band and to communicate a transmit and receive signal with the antenna through the antenna interface; and

a filter configured to operate at a high frequency band and to communicate a transmit and receive signal with the antenna through the antenna interface.

16. The wireless communication device of claim 15, wherein at least one of the filters comprises passive inductor and capacitor components.

17. The wireless communication device of claim 15, wherein at least one of the filters comprises a SAW device.

18. The wireless communication device of claim 15, wherein at least one of the filters comprises a FBAR device.

19. The wireless communication device of claim 15, wherein the triplexer is a FBAR device.

20. The wireless communication device of claim 15, wherein one of the communication bands corresponds to a PCS band.

21. The wireless communication device of claim 15, wherein one of the communication bands corresponds to the GPS band.

22. The wireless communication device of claim 15, wherein one of the communication bands corresponds to a cellular band.

23. The wireless communication device of claim 15, further comprising:

a PCS transmitter;

a PCS receiver; and

a duplexer electrically coupled with the PCS transmitter, PCS receiver, and with the high frequency filter, the duplexer configured to connect the PCS receiver and the PCS transmitter with the high frequency filter, while providing isolation between the PCS transmitter and PCS receiver.

24. The wireless communication device of claim 15, further comprising:

a cellular transmitter;

a cellular receiver; and

a duplexer electrically coupled with the cellular transmitter, cellular receiver, and the low frequency filter, the duplexer configured to connect the cellular receiver and the cellular transmitter with the low frequency filter, while providing isolation between the cellular transmitter and cellular receiver.

25. The wireless communication device of claim 15, wherein each of the filters is further configured to reject signals associated with the other filters.