ANTENNA SYSTEM FOR USE WITHIN A WIRELESS COMMUNICATION DEVICE

• US 20100232474A1
• Filed: 05/28/2010
• Published: 09/16/2010
• Est. Priority Date: 03/14/2007
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Rofougaran, Maryam, Rofougaran, Ahmadreza (Reza)
• Granted Patent: US 7,949,309 B2
• Time in Patent Office: Days
• US Class Current: 375/135
• CPC Class Codes: H01Q 21/061 Two dimensional planar arrays
• CPC Class Codes: H01Q 21/28 Combinations of substantially independent non-interacting antenna units or systems multiple beam H01Q25/00
• CPC Class Codes: H04B 1/0458 Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages matching circuits in general H03H
• CPC Class Codes: H04B 1/18 Input circuits, e.g. for coupling to an antenna or a transmission line coupling networks between antennas or lines and receivers independent of the nature of the receiver H03H

Abstract

An antenna system includes an antenna, a transmission line, an inductor module, a tunable capacitor module, and control logic. The transmission line is coupled to the antenna and to the inductor module. The tunable capacitor module is coupled to the transmission line in accordance with a capacitance control signal to provide a desired capacitance such that inductance of the inductor module and the desired capacitance tunes the antenna system. The control logic is coupled to generate the capacitance control signal based on the operational parameters.

Claims

1. A wireless communication device comprising:

a processing module to;

establish a wireless communication protocol in accordance with one of a plurality of operational modes of the wireless communication device;

generate operational parameters based on the wireless communication protocol, in which the operational parameters include a frequency hopping pattern within a given frequency band, wherein the frequency hopping pattern establishes different center frequencies;

receive a plurality of inbound symbol streams in accordance with the frequency hopping pattern;

oversample the plurality of inbound symbol streams to produce a plurality of oversampled inbound symbol streams;

combine the plurality of oversampled inbound symbol streams to produce a combined oversampled symbol stream; and

convert the combined oversampled symbol stream into inbound data in accordance with the wireless communication protocol;

a transceiver section coupled to the processing module to provide a radio frequency front-end for the wireless communication device; and

an antenna system coupled to the transceiver section, in wherein the antenna system includes inductors and capacitors in a tuning section controlled by a control signal from a control logic to tune the tuning section based on the operational parameters.

2. The wireless communication device of claim 1, wherein the inductors include:

a first inductor to provide a first inductance; and

a tunable inductor circuit coupled to provide a second inductance in accordance with the control signal and wherein the first and second inductances provide inductance for the tuning section of the antenna system.

3. The wireless communication device of claim 1, wherein the processing module, transceiver section and the antenna system are constructed in an integrated circuit and an antenna is constructed on a printed circuit board and couples to the antenna system in the integrated circuit.

4. The wireless communication device of claim 3, wherein the tuning section of the antenna system includes a tunable capacitor circuit and a tunable inductor circuit.

5. The wireless communication device of claim 1, wherein the antenna system also includes an antenna.

6. The wireless communication device of claim 5, wherein the processing module, transceiver section and the antenna system, which includes the antenna, are constructed in an integrated circuit.

7. The wireless communication device of claim 6, wherein the tuning section of the antenna system includes a tunable capacitor circuit and a tunable inductor circuit.

8. An integrated circuit (IC) comprising:

a processing module coupled to;

establish a wireless communication protocol in accordance with one of a plurality of operational modes of the wireless communication device;

generate operational parameters based on the wireless communication protocol, in which the operational parameters include a frequency hopping pattern within a given frequency band, wherein the frequency hopping pattern establishes different center frequencies;

receive a plurality of inbound symbol streams in accordance with the frequency hopping pattern;

oversample the plurality of inbound symbol streams to produce a plurality of oversampled inbound symbol streams;

combine the plurality of oversampled inbound symbol streams to produce a combined oversampled symbol stream; and

convert the combined oversampled symbol stream into inbound data in accordance with the wireless communication protocol;

a transceiver section coupled to the processing module to provide a radio frequency front-end for the wireless communication device; and

an antenna system coupled to the transceiver section, in which the antenna system includes an inductor module and a tunable capacitor module, wherein the tunable capacitor module provides a selected capacitance such that an inductance of the inductor module and the selected capacitance of the tunable capacitor module tunes the antenna system.

9. The IC of claim 8, wherein the antenna system further includes a control logic coupled to generate a control signal based on the operational parameters to select the capacitance.

10. The IC of claim 9, wherein the inductor module includes a first inductor to provide a first inductance and a tunable inductor circuit to provide a second inductance in accordance with the control signal and wherein the first and second inductances provide inductance for the inductor module.

11. The IC of claim 8, wherein the processing module further generates the operational parameters to include a desired center frequency.

12. The IC of claim 8 further comprising an antenna constructed as part of the IC.

13. The IC of claim 8, wherein the antenna system couples to an external antenna.

14. The IC of claim 9, wherein the inductor module includes a first inductor to provide a first inductance and a tunable inductor circuit to provide a second inductance in accordance with the control signal and wherein the first and second inductances provide inductance for the inductor module.