Multiple Frequency Band Wireless Transceiver Device and Related Devices

• US 20090153417A1
• Filed: 08/22/2008
• Published: 06/18/2009
• Est. Priority Date: 12/12/2007
• Status: Active Grant

• Current Assignee: Wistron NeWeb Corporation (Wistron Corporation)
• Original Assignee: Wistron NeWeb Corporation (Wistron Corporation)
• Inventors: Chen, Yung-Jinn
• Granted Patent: US 8,005,438 B2
• Time in Patent Office: Days
• US Class Current: 343/702
• CPC Class Codes: H01Q 1/241 used in mobile communications, e.g. GSM H01Q1/247, H01Q1/248 take precedence
• CPC Class Codes: H01Q 3/24 varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching

Abstract

A wireless signal transceiver device for receiving wireless signals of multiple frequency bands has an antenna, a radio frequency signal processing unit, an antenna switch module, a primary antenna matching circuit, and an auxiliary antenna matching module. The radio frequency signal processing unit outputs a control signal according to the frequency band of the wireless signal processed. The antenna switch module has a first signal terminal, and a plurality of second signal terminals coupled to the radio frequency signal processing unit, and switches a signal connection between the first signal terminal and one second signal terminal of the plurality of second signal terminals according to the control signal. The primary antenna matching circuit roughly matches the antenna, and the auxiliary antenna matching module matches the antenna with the primary antenna matching circuit based on the frequency band of the wireless signal processed by the radio frequency signal processing unit.

Claims

1. A wireless signal transceiver device for receiving wireless signals of a plurality of frequency bands, the wireless signal transceiver device comprising:

an antenna;

a radio frequency signal processing unit for processing the wireless signals of the plurality of frequency bands, and outputting a control signal according to the frequency band of the wireless signal processed;

an antenna switch module comprising a first signal terminal and a plurality of second signal terminals, the plurality of second signal terminals coupled to the radio frequency signal processing unit, wherein the antenna switch module is utilized for switching a signal connection between the first signal terminal and one second signal terminal of the plurality of second signal terminals according to the control signal;

a primary antenna matching circuit coupled to the antenna for roughly matching the antenna; and

an auxiliary antenna matching module coupled between the primary antenna matching circuit and the first signal terminal of the antenna switch module for matching the antenna with the primary antenna matching circuit according to the frequency band of the wireless signal processed by the radio frequency signal processing unit.

2. The wireless signal transceiver device of claim 1, wherein the auxiliary antenna matching module comprises:

a plurality of auxiliary antenna matching circuits, wherein each of the plurality of auxiliary antenna matching circuits corresponds to one frequency band of the plurality of frequency bands for matching the antenna with the primary antenna matching circuit;

a first switching module coupled between the primary antenna matching circuit and the plurality of auxiliary antenna matching circuits for switching a connection between the primary antenna matching circuit and one auxiliary antenna matching circuit of the plurality of auxiliary antenna matching circuits according to the frequency band of the wireless signal processed by the radio frequency signal processing unit; and

a second switching module coupled between the plurality of auxiliary antenna matching circuits and first signal terminal of the antenna switch module for switching a connection between the first signal terminal of the antenna switch module and one auxiliary antenna matching circuit of the plurality of auxiliary antenna matching circuits according to the frequency band of the wireless signal processed by the radio frequency signal processing unit.

3. The wireless signal transceiver device of claim 2, wherein the first switching module is a switch comprising a first terminal coupled to the primary antenna matching circuit, and a plurality of second terminals coupled to the plurality of auxiliary antenna matching circuits for switching a signal connection between the first terminal and one second terminal of the plurality of second terminals according to the control signal outputted by the radio frequency signal processing unit.

4. The wireless signal transceiver device of claim 2, wherein the second switching module is a switch comprising a plurality of first terminals coupled to the plurality of auxiliary antenna matching circuits, and an second terminal coupled to the first signal terminal of the antenna switch module for switching a signal connection between one first terminal of the plurality of first terminals and the second terminal according to the control signal outputted by the radio frequency signal processing unit.

5. The wireless signal transceiver device of claim 2, wherein the first switching module is a multiplexer comprising a plurality of filtering units respectively corresponding to the plurality of frequency bands for filtering out the wireless signals of the plurality of frequency bands.

6. The wireless signal transceiver device of claim 2, wherein the second switching module is a multiplexer comprising a plurality of filtering units respectively corresponding to the plurality of frequency bands for filtering out the wireless signals of the plurality of frequency bands.

7. The wireless signal transceiver device of claim 2, wherein the plurality of auxiliary antenna matching circuits has a number of 2.

8. The wireless signal transceiver device of claim 7, wherein the first switching module and the second switching module are both switches or duplexers.

9. The wireless signal transceiver device of claim 1, wherein the plurality of frequency bands correspond to 900 MHz GSM, 1800 MHz GSM, 850 MHz GSM, and 1900 MHz GSM.

10. An antenna switch module utilized in a wireless signal transceiver device for switching wireless signals of a plurality of frequency bands, the antenna switch module comprising:

a first signal terminal coupled to a primary matching circuit of the wireless signal transceiver device for receiving the wireless signal from the primary matching circuit or outputting the wireless signal to the primary matching circuit;

a plurality of second signal terminals coupled to a radio frequency signal processing unit of the wireless signal transceiver device for receiving signals from the radio frequency signal processing unit or outputting signals to the radio frequency signal processing unit;

a switching module comprising a first terminal coupled to the first signal terminal, and a plurality of second terminals, for switching a signal connection between the first terminal and one second terminal of the plurality of second terminals according to the frequency band of the wireless signal processed by the radio frequency signal processing unit;

a plurality of auxiliary antenna matching circuits coupled to the plurality of second terminals of the switching module, each of the plurality of auxiliary antenna matching circuits corresponding to one frequency band of the plurality of frequency bands; and

a plurality of transceiver switching modules coupled between the plurality of auxiliary antenna matching circuits and the plurality of second signal terminals for switching receiving or transmitting of the wireless signal.

11. The antenna switch module of claim 10, wherein the switching module is a multiplexer comprising a plurality of filtering units respectively corresponding to the plurality of frequency bands for filtering out the wireless signals of the plurality of frequency bands.

12. The antenna switch module of claim 10, wherein the plurality of auxiliary antenna matching circuits have a number of 2.

13. The antenna switch module of claim 12, wherein the multiplexer is a duplexer.

14. The antenna switch module of claim 10, wherein the switching module is coupled to the antenna through a primary antenna matching circuit.

15. The antenna switch module of claim 10, wherein the plurality of frequency bands correspond to 900 MHz GSM, 1800 MHz GSM, 850 MHz GSM, and 1900 MHz GSM.

16. A wireless transceiver device for receiving and transmitting wireless signals of a plurality of frequency bands, the wireless transceiver device comprising:

an antenna;

a radio frequency signal processing unit for processing the wireless signals of the plurality of frequency bands and outputting a control signal according to the frequency band of the wireless signal processed;

a primary antenna matching circuit coupled to the antenna for roughly matching the antenna; and

an antenna switch module coupled between the primary antenna matching circuit and the radio frequency signal processing unit, the antenna switch module comprising;

a first signal terminal coupled to the primary antenna matching circuit for receiving the wireless signals through the primary antenna matching circuit or outputting a signal to the primary antenna matching circuit;

a plurality of second signal terminals coupled to the radio frequency signal processing unit for receiving signals through the radio frequency signal processing unit or outputting signals to the radio frequency signal processing unit;

a switching module comprising a first terminal coupled to the first signal terminal, and a plurality of second terminals, for switching a signal connection between the first terminal and one second terminal of the plurality of second terminals according to the frequency band of the wireless signal processed by the radio frequency signal processing unit;

a plurality of auxiliary antenna matching circuits coupled to the plurality of second terminals of the switching module, each of the plurality of auxiliary antenna matching circuits corresponding to one frequency band of the plurality of frequency bands for matching the antenna with the primary antenna matching circuit according to the frequency band of the wireless signal processed by the radio frequency signal processing unit; and

a plurality of transceiver switching modules coupled between the plurality of auxiliary antenna matching circuits and the plurality of second signal terminals for switching receiving or transmitting of the wireless signals.

17. The wireless transceiver device of claim 16, wherein the switching module is a multiplexer comprising a plurality of filtering units respectively corresponding to the plurality of frequency bands for filtering out the wireless signals of the plurality of frequency bands.

18. The wireless transceiver device of claim 16, wherein the plurality of auxiliary antenna matching circuits have a number of 2.

19. The wireless transceiver device of claim 18, wherein the switching module is a duplexer.

20. The wireless transceiver device of claim 16, wherein the plurality of frequency bands correspond to 900 MHz GSM, 1800 MHz GSM, 850 MHz GSM, and 1900 MHz GSM.