Method and system for measuring and optimizing integrated antenna performance

• US 8,391,810 B2
• Filed: 07/15/2010
• Issued: 03/05/2013
• Est. Priority Date: 03/19/2007
• Status: Expired due to Fees

• 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:
  US12/837,102
• Publication Number:
  US 20100279633A1
• Time in Patent Office: 964 Days
• Field of Search: 455/67.11, 455/67.14, 455/69, 455/115.2, 455423-424, 455/522, 455/552.1, 455/553.1
• US Class Current: 455/115.2
• 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

A method and system for wireless communication is provided and may include transmitting FM radio signals utilizing antenna configurations in a wireless device including a frequency modulation (FM) radio transmitter, an FM radio receiver, and one or more other receivers. The transmitter may be calibrated based on a signal received from a second wireless device via the other receivers. The second wireless device may include an FM radio receiver and corresponding other transmitters that may utilize other wireless protocols. The signal received at the wireless device may be generated at the second wireless device via the other transmitters. A frequency of the transmitted FM radio signals may be varied, and may be utilized adjust the antenna configurations. An impedance of the antenna configurations may be matched based on the frequency variation. A capacitive and/or inductive load for the matching of the impedance of the antenna configurations may be programmably adjusted.

Claims

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

in a wireless device comprising a frequency modulation (FM) radio transmitter, an FM radio receiver, and another receiver;

transmitting an FM radio signal utilizing an antenna configuration; and

responsive to said transmitted FM radio signal, adjusting said antenna configuration of said FM radio transmitter based on a signal received from a second wireless device via said another receiver, wherein adjusting said antenna configuration comprises tuning a transmit frequency of said FM radio transmitter.

2. The method according to claim 1, wherein said second wireless device comprises an FM radio receiver and a corresponding transmitter.

3. The method according to claim 2, wherein transmitting said FM radio signal comprises utilizing a wireless protocol, wherein said corresponding transmitter utilizes another wireless protocol.

4. The method according to claim 3, wherein said signal received at said wireless device via one of said another receiver is generated at said second wireless device via said corresponding transmitter.

5. The method according to claim 1, comprising varying a frequency of said transmitted FM radio signal over a range of frequencies.

6. The method according to claim 5, comprising adjusting said antenna configuration based on said variation of said frequency of said transmitted FM radio signal.

7. The method according to claim 6, comprising matching an impedance of said antenna configuration based on said variation of said frequency of said transmitted FM radio signal.

8. The method according to claim 7, comprising programmably adjusting at least one of a capacitive load or an inductive load for said matching of said impedance of said antenna configuration.

9. The method according to claim 5, comprising varying said frequency of said transmitted FM radio signal over said range of frequencies using a tunable oscillator.

10. The method according to claim 9, wherein said FM radio transmitter, said FM radio receiver, and said tunable oscillator are integrated within a single chip.

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

one or more circuits for use in a wireless device, said one or more circuits comprising a frequency modulation (FM) radio transmitter, an FM radio receiver, and another receiver, said one or more circuits being operable to;

transmit an FM radio signal utilizing an antenna configuration; and

responsive to said transmitted FM radio signal, calibrate said FM radio transmitter based on a signal received from a second wireless device via said another receiver, wherein calibrate said FM radio transmitter comprises select at least one of a plurality of antennas associated with the FM transmitter.

12. The system according to claim 11, wherein said second wireless device comprises an FM radio receiver and a corresponding transmitter.

13. The system according to claim 12, wherein said FM radio signal utilizes a wireless protocol, wherein said corresponding transmitter utilizes another wireless protocol.

14. The system according to claim 13, wherein said signal received at said wireless device via said another receiver is generated at said second wireless device via said corresponding transmitter.

15. The system according to claim 11, wherein said one or more circuits are operable to vary a frequency of said transmitted FM radio signal over a range of frequencies.

16. The system according to claim 15, wherein said one or more circuits are operable to adjust said antenna configuration based on said variation of said frequency of said transmitted FM radio signal.

17. The system according to claim 16, wherein said one or more circuits are operable to match an impedance of said antenna configuration based on said variation of said frequency of said transmitted FM radio signal.

18. The system according to claim 16, wherein said one or more circuits are operable to programmably adjust at least one of a capacitive load or an inductive load for said matching of said impedance of said antenna configuration.

19. The system according to claim 15, wherein said one or more circuits are operable to vary said frequency of said transmitted FM radio signal over said range of frequencies using a tunable oscillator.

20. The system according to claim 19, wherein said FM radio transmitter, said FM radio receiver, and said tunable oscillator are integrated within a single chip.

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

a frequency modulation (FM) radio transmitter configured to transmit an FM radio signal using an antenna configuration;

an FM radio receiver;

a secondary receiver configured to receive a signal from a remote wireless device in response to said FM radio signal; and

one or more circuits configured to match an impedance of said antenna configuration of said FM radio transmitter based at least upon said signal from said remote wireless device.

22. The system according to claim 21, wherein said FM radio receiver is configured to utilize a first wireless protocol, wherein said secondary receiver is configured to utilize a second wireless protocol, the second wireless protocol being different from the first wireless protocol.

23. The system according to claim 22, wherein said second wireless protocol is selected from a group consisting of Bluetooth, WiFi, near-field communication (NFC), radio frequency identification (RFID), and wireless local area network (WLAN).