Method and system for optimizing an FM transmitter and FM receiver in a single chip FM transmitter and FM receiver system

• US 8,208,886 B2
• Filed: 08/01/2007
• Issued: 06/26/2012
• Est. Priority Date: 03/19/2007
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Baker, Thomas
• Primary Examiner(s): Nguyen, Lee
• Application Number:
  US11/832,590
• Publication Number:
  US 20080232448A1
• Time in Patent Office: 1,791 Days
• Field of Search: 455/101, 455/107, 4552771-2772, 4555521-5531, 343/860, 343/861
• US Class Current: 455/277.1
• CPC Class Codes: H03L 7/085 concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal H03L7/10 takes precedence; circuits for comparing the phase or frequency of two mutually-independent oscillations H03D13/00
• CPC Class Codes: H03L 7/181 a numerical count result being used for locking the loop, the counter counting during fixed time intervals H03L7/1806 takes precedence

Abstract

Methods and systems for optimizing an FM transmitter and FM receiver in a single chip FM transmitter and receiver are disclosed and may include receiving an FM signal from each of multiple selected antenna configurations. The received signal strength obtained for each configuration may be measured and stored in a memory, and FM signals may be transmitted and/or received utilizing a configuration that generates a received signal strength above a desired threshold from the measurement. The FM transmitter and receiver may be integrated on-chip, and may be impedance matched to the antennas utilizing selectable capacitors integrated on-chip and/or off-chip and selectable inductors located off-chip. The multiple antennas may comprise antennas that are internal and antennas that are external to the wireless device, each of which may be tuned for one or more wireless protocols. One or more of the antennas may comprise metal components within the wireless device.

Claims

1. A method for wireless communication, the method comprising:

in a single wireless device comprising an RF transmitter and an RF receiver integrated within a chip and a switching network configured to selectively couple antennas to the RF transmitter and RF receiver,

receiving an RF signal from each of a plurality of different selected antenna configurations integrated in said single wireless device and external to said chip, each of said different selected antenna configurations comprising a plurality of antennas selected by said switching network, said different selected antenna configurations comprising a combination of antennas internal and external to an enclosure of the single wireless device;

measuring a received signal strength of said received RF signal for each of said plurality of different selected antenna configurations;

determining which of said plurality of different selected antenna configurations generates a received signal strength above a desired threshold based on said measuring; and

transmitting and/or receiving subsequent RF signals utilizing one of said plurality of different selected antenna configurations that generates a received signal strength above said desired threshold based on said measuring.

2. The method according to claim 1, comprising selectively coupling each of said different selected antenna configurations to said RF receiver for said receiving of said RF signal.

3. The method according to claim 2, wherein said plurality of antennas comprises an internal metal component of said single wireless device.

4. The method according to claim 3, wherein each of said antennas internal to said single wireless device is tuned for handling one or more of a plurality of wireless protocols.

5. The method according to claim 2, wherein said plurality of antennas comprises antennas coupled to said single wireless device.

6. The method according to claim 5, wherein each of said antennas coupled to said single wireless device is tuned for handling one or more of a plurality of wireless protocols.

7. The method according to claim 2, wherein one or more of said plurality of antennas comprises metal components within and/or part of the enclosure for said single wireless device.

8. The method according to claim 1, comprising impedance matching said RF receiver to each of said plurality of different selected antenna configurations.

9. The method according to claim 8, wherein said impedance matching utilizes on-chip and/or off-chip selectable capacitors.

10. The method according to claim 8, wherein said impedance matching utilizes off-chip selectable inductors.

11. The method according to claim 1, comprising storing said received signal strength for each of said plurality of different selected antenna configurations in a memory.

12. A system for wireless communication, the system comprising:

one or more circuits in a single wireless device comprising an RF transmitter and an RF receiver integrated within a chip and a switching network configured to selectively couple antennas to the RF transmitter and RF receiver, said one or more circuits receives an RF signal from each of a plurality of different selected antenna configurations integrated in said single wireless device and external to said chip, each of said different selected antenna configurations comprising a plurality of antennas selected by said switching network, said different selected antenna configurations comprising a combination of antennas internal and external to an enclosure of the single wireless device;

said one or more circuits measures a received signal strength of said received RF signal for each of said plurality of different selected antenna configurations;

said one or more circuits determines which of said plurality of different selected antenna configurations generates a received signal strength above a desired threshold based on said measuring; and

said one or more circuits transmits and/or receives subsequent RF signals utilizing one of said plurality of different selected antenna configurations that generates a received signal strength above said desired threshold based on said measuring.

13. The system according to claim 12, wherein said one or more circuits enables selectively coupling each of said different selected antenna configurations to said RF receiver for said receiving of said RF signal.

14. The system according to claim 13, wherein said plurality of antennas comprises an internal metal component of said single wireless device.

15. The system according to claim 14, wherein each of said antennas internal to said single wireless device is tuned for handling one or more of a plurality of wireless protocols.

16. The system according to claim 13, wherein said plurality of antennas comprises antennas coupled to said single wireless device.

17. The system according to claim 16, wherein each of said antennas coupled to said single wireless device is tuned for handling one or more of a plurality of wireless protocols.

18. The system according to claim 13, wherein one or more of said plurality of antennas comprises metal components within and/or part of the enclosure for said single wireless device.

19. The system according to claim 12, wherein said one or more circuits enables impedance matching said RF receiver to each of said plurality of different selected antenna configurations.

20. The system according to claim 19, wherein said one or more circuits comprises on-chip and/or off-chip selectable capacitors for said impedance matching.

21. The system according to claim 19, wherein said one or more circuits comprises off-chip selectable inductors for said impedance matching.

22. The system according to claim 12, wherein said one or more circuits enables storing said received signal strength for each of said plurality of different selected antenna configurations in a memory.