IP Library Granted Patent US 8,369,390
Granted Patent B2
US 8,369,390 · App. 13/305,247 · Granted Feb 5, 2013

Multimode transceiver for use with multiple antennas and method for use therewith

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Quick Facts
Patent No.
US 8,369,390
App. No.
13/305,247
Granted
Feb 5, 2013
Kind
B2
Abstract

A wireless transceiver includes a plurality of antennas. A plurality of signal recovery circuits generate a selected number of received signals from a first subset of the plurality of antennas, based on a control signal. A receiver section recovers an inbound data stream from the selected number of received signals. A transmitter module generates a transmit signal to a selected one of the plurality of antennas, based on the control signal. The intersection between the first subset of the plurality of antennas and the selected one of the plurality of antennas is the null set for each value of the control signal. The control signals can be generated in multiple different operational modes including, for instance, a cyclic modes and a fixed mode of operation.

Claims (35)

1. A wireless transceiver comprising:

a plurality of antennas;

a receiver section, coupled to the plurality of antennas, that generates a selected number of received signals from a first subset of the plurality of antennas, based on a control signal and further that generates an inbound data stream from the selected number of received signals; and

a transmitter module, coupled to the plurality of antennas, that generates a transmit signal to a selected one of the plurality of antennas, based on the control signal;

a processing module, coupled to the plurality of signal recovery circuits and the transmitter module, that generates the control signal, wherein the control signal controls the transmitter module to a cyclic mode of operation wherein the selected one of the plurality of antennas is varied in a cyclic pattern and wherein the processing module is further operable to select a favored transmit antenna of the plurality of antennas based on operation in the cyclic mode of operation and to generate the control signal to switch to a fixed mode of operation where the selected one of the plurality of antennas is fixed as the favored transmit antenna;

wherein the intersection between the first subset of the plurality of antennas and the selected one of the plurality of antennas is the null set for each value of the control signal.

2. The wireless transceiver of claim 1 wherein the transmitter module includes:

a transmitter section that generates the transmit signal;

a switching element, coupled to the transmitter section, that couples the transmit signal to the selected one of the plurality of antennas, based on the control signal; and

a plurality of transmission lines for coupling the plurality of antennas to the plurality of signal recovery circuits and the plurality of transmitter sections.

3. The wireless transceiver of claim 1 wherein the processing module is further operable to generate the control signal to switch from the fixed mode of operation to the cyclic mode of operation.

4. The wireless transceiver of claim 1 wherein the receiver section further generates a combined signal based on the selected number of received signals and the wireless transceiver section further comprises:

a clock recovery circuit, coupled to the receiver section, that generates a recovered clock signal based on the combined signal, and wherein the processing module is clocked based on the recovered clock signal.

5. The wireless transceiver of claim 1 further comprising:

a plurality of signal recovery circuits, coupled to the first subset of the plurality of antennas, that generate a selected number of power supply signals, the wireless transceiver further comprising:

a power recovery circuit, coupled to the plurality of signal recovery circuits, that generates a recovered power signal based on the selected number of power supply signals.

6. The wireless transceiver of claim 5 wherein the selected number of power supply signals includes a plurality of power supply signals and wherein the power recover circuit generates the recovered power signal based on a combination of the plurality of power supply signals.

7. The wireless transceiver of claim 1 wherein the selected number of received signals includes a plurality of received signals and wherein the receiver section generates the inbound data stream based on a combination of the plurality of received signals.

8. A method comprising:

generating a control signal, wherein, in a cyclic mode of operation, the control signal varies a selected one of the plurality of antennas in a cyclic pattern;

selecting a favored transmit antenna of the plurality of antennas based on operation in the cyclic mode of operation, wherein the control signal is generated to switch to a fixed mode of operation where the selected one of the plurality of antennas is fixed as the favored transmit antenna;

generating a selected number of received signals from a first subset of a plurality of antennas, based on the control signal; and

generating a transmit signal to the selected one of the plurality of antennas, based on the control signal;

wherein the intersection between the first subset of the plurality of antennas and the selected one of the plurality of antennas is the null set for each value of the control signal.

9. The method of claim 8 further comprising:

recovering an inbound data stream from the selected number of received signals.

10. The method of claim 8 wherein the control signal is generated to switch from the fixed mode of operation to the cyclic mode of operation.

11. The method of claim 8 further comprising:

generating a combined signal based on the selected number of received signals; and

generating a recovered clock signal based on the combined signal.

12. The method of claim 8 further comprising:

generating a selected number of power supply signals; and

generating a recovered power signal based on the selected number of power supply signals.

13. The method of claim 12 wherein the selected number of power supply signals includes a plurality of power supply signals and wherein generating the recovered power signal is based on a combination of the plurality of power supply signals.

14. The method of claim 8 wherein the selected number of received signals includes a plurality of received signals and wherein generating the inbound data stream is based on a combination of the plurality of received signals.

Assignments (7)
MERGER AND CHANGE OF NAME Recorded May 22, 2017
From: FREESCALE SEMICONDUCTOR, INC.; NXP USA, INC.
To: NXP USA, INC.
Reel/Frame 042525/0001 →
CORRECTIVE ASSIGNMENT TO CORRECT THE THE ADD OMITTED PAGE 6 OF 22 TO THE ASSIGNMENT AGREEMENT PREVIOUSLY RECORDED AT REEL: 040569 FRAME: 0572. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Mar 28, 2017
From: BROADCOM CORPORATION
To: FREESCALE SEMICONDUCTOR, INC.
Reel/Frame 042108/0597 →
TERMINATION AND RELEASE OF SECURITY INTEREST IN PATENTS Recorded Feb 3, 2017
From: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
To: BROADCOM CORPORATION
Reel/Frame 041712/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 5, 2016
From: BROADCOM CORPORATION
To: FREESCALE SEMICONDUCTOR, INC.
Reel/Frame 040569/0572 →
RELEASE OF SECURITY INTEREST Recorded Sep 30, 2016
From: BANK OF AMERICA N.A., AS COLLATERAL AGENT
To: BROADCOM CORPORATION
Reel/Frame 040192/0701 →
PATENT SECURITY AGREEMENT Recorded Feb 11, 2016
From: BROADCOM CORPORATION
To: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
Reel/Frame 037806/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 2, 2011
From: ROFOUGARAN, AHMADREZA (REZA)
To: BROADCOM CORPORATION
Reel/Frame 027316/0003 →