FULL-DUPLEX WIRELESS TRANSCEIVER DESIGN

• US 20100029350A1
• Filed: 08/01/2008
• Published: 02/04/2010
• Est. Priority Date: 08/01/2008
• Status: Abandoned Application

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Zhang, Yang
• Application Number:
  US12/184,318
• Publication Number:
  US 20100029350A1
• Time in Patent Office: Days
• US Class Current: 455/575.700
• CPC Class Codes: H01Q 1/525 between emitting and receiving antennas
• CPC Class Codes: H04B 1/40 Circuits
• CPC Class Codes: H04B 1/52 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

Abstract

Techniques are provided for full-duplex mobile wireless transceiver design without using duplexers. In an embodiment, separate antennas are provided for the TX and RX signal paths in the transceiver. In an embodiment, the antennas may be implemented as surface mountable ceramic antennas. In an embodiment, the antennas may incorporate integrated band-pass filtering. Further techniques for designing the antennas to have different relative physical characteristics, including antenna orientation, are disclosed.

Claims

1. A transceiver apparatus for wireless communications comprising:

transmit (TX) circuitry for generating a TX signal to be wirelessly transmitted;

a TX antenna coupled to said TX circuitry for transmitting said TX signal;

an RX antenna for wirelessly receiving a receive (RX) signal; and

receive (RX) circuitry for processing said RX signal.

2. The apparatus of claim 1, the apparatus being a mobile wireless communications device.

3. The apparatus of claim 2, the mobile wireless communications device being a mobile phone.

4. The apparatus of claim 3, further comprising:

a TX band-pass filter (BPF) coupled between said TX antenna and said TX circuitry, said TX BPF having a passband tuned to a TX frequency band; and

an RX BPF coupled between said RX antenna and said RX circuitry, the RX BPF having a passband tuned to an RX frequency band.

5. The apparatus of claim 3, at least one of the TX and RX antennas comprising a ceramic antenna.

6. The apparatus of claim 5, both the TX and RX antennas comprising ceramic antennas.

7. The apparatus of claim 5, at least one of the TX and RX antenna comprising a whip antenna.

8. The apparatus of claim 3, at least one of the TX and RX antennas comprising a patch antenna.

9. The apparatus of claim 3, at least one of the TX and RX antennas comprising a planar inverted-F antenna.

10. The apparatus of claim 5, each of the ceramic antennas comprising an integrated band-pass filter (BPF), the BPF of the TX antenna having a passband tuned to a TX frequency band, the BPF of the RX antenna having a passband tuned to an RX frequency band.

11. The apparatus of claim 5, the TX antenna having a physical shape different from that of the RX antenna.

12. The apparatus of claim 5, the TX antenna having a longitudinal axis, the RX antenna also having a longitudinal axis, the longitudinal axis of the TX antenna being non-parallel to the longitudinal axis of the RX antenna.

13. The apparatus of claim 8, the longitudinal axis of the TX antenna being perpendicular to the longitudinal axis of the RX antenna.

14. The apparatus of the claim 5, the polarization of the TX antenna being orthogonal to the polarization of the RX antenna.

15. The apparatus of claim 5, the TX antenna having a physical size different from that of the RX antenna.

16. A method for a mobile wireless communications device to simultaneously transmit and receive a signal, the method comprising:

generating a transmit (TX) signal to be wirelessly transmitted;

transmitting said TX signal over a TX antenna;

wirelessly receiving a receive (RX) signal over an RX antenna; and

processing said RX signal.

17. The method of claim 16, the mobile wireless communications device being a mobile phone.

18. The method of claim 17, further comprising:

band-pass filtering the generated TX signal prior to transmitting over said TX antenna; and

band-pass filtering the RX signal received over the RX antenna before processing said RX signal.

19. The method of claim 17, at least one of the TX and RX antennas comprising a ceramic antenna.

20. The method of claim 19, both the TX and RX antennas comprising ceramic antennas.

21. The method of claim 19, at least one of the TX and RX antenna comprising a whip antenna.

22. The method of claim 19, at least one of the TX and RX antennas comprising a patch antenna.

23. The method of claim 19, at least one of the TX and RX antennas comprising a planar inverted-F antenna.

24. The method of claim 19, each of the ceramic antennas comprising an integrated band-pass filter (BPF), the BPF of the TX antenna having a passband tuned to a TX frequency band, the BPF of the RX antenna having a passband tuned to an RX frequency band.

25. The method of claim 19, the TX antenna having a physical shape different from that of the RX antenna.

26. The method of claim 19, the TX antenna having a longitudinal axis, the RX antenna also having a longitudinal axis, the longitudinal axis of the TX antenna being non-parallel to the longitudinal axis of the RX antenna.

27. The method of claim 26, the longitudinal axis of the TX antenna being perpendicular to the longitudinal axis of the RX antenna.

28. The method of claim 19, the polarization of the TX antenna being orthogonal to the polarization of the RX antenna.

29. The method of claim 19, the TX antenna having a physical size different from the physical size of the RX antenna.

30. A transceiver apparatus for wireless communications comprising:

transmit (TX) circuitry for generating a TX signal to be wirelessly transmitted;

means coupled to said TX circuitry for wirelessly transmitting said TX signal;

means for wirelessly receiving a receive (RX) signal; and

receive (RX) circuitry for processing said RX signal.

31. The transceiver apparatus of claim 30, the apparatus being a mobile wireless communications device.

32. The transceiver apparatus of claim 31, further comprising:

means for band-pass filtering the generated TX signal prior to transmitting over said TX antenna; and

means for band-pass filtering the wirelessly received RX signal prior to processing said RX signal.

33. The transceiver apparatus of claim 30, further comprising means for isolating the means for wirelessly transmitting said TX signal from the means for wirelessly receiving said RX signal.