Configurable wireless communication device with configurable front-end

• US 9,065,541 B2
• Filed: 09/30/2013
• Issued: 06/23/2015
• Est. Priority Date: 09/10/2013
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Rofougaran, Ahmadreza, Tarighat Mehrabani, Alireza, Rofougaran, Maryam
• Primary Examiner(s): TAYLOR, NATHAN SCOTT
• Application Number:
  US14/041,062
• Publication Number:
  US 20150072671A1
• Time in Patent Office: 631 Days
• Field of Search: 455/78, 455/418, 455/446, 455/458, 370/278
• US Class Current: 1/1
• CPC Class Codes: H04B 1/44 Transmit/receive switching
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04B 7/0691 using subgroups of transmit antennas
• CPC Class Codes: H04B 7/0874 using subgroups of receive antennas

Abstract

A configurable wireless communication device includes a baseband processing module, a transmitter section, a receiver section, an antenna, transmit/receive isolation circuits, high frequency switches, and a configuration module. The baseband processing module converts outbound data into an outbound symbol stream and converts an inbound symbol stream into inbound data. The transmitter section converts the outbound symbol stream into an outbound signal and the receiver section converts an inbound signal into the inbound symbol stream. The configuration module, in a power combining mode, couples, via a set of high frequency switches, the antenna to a set of transmit/receive isolation circuits, wherein a number of the transmit/receive isolation circuits in the set of transmit/receive isolation circuits is based on a desired combined transmit power.

Claims

1. A configurable wireless communication device front end comprising:

a plurality of antennas;

a plurality of transmit/receive isolation circuits;

a semiconductor substrate supporting;

a plurality of power amplifiers; and

a plurality of low noise amplifiers, wherein a transmit/receive isolation circuit of the plurality of transmit/receive isolation circuits is coupled to a power amplifier of the plurality of power amplifiers and to a low noise amplifier of the plurality of low noise amplifiers;

a plurality of high frequency switches; and

a configuration module configured to;

in a power combining mode, couple, via a set of high frequency switches of the plurality of high frequency switches, an antenna of the plurality of antennas to a set of transmit/receive isolation circuits of the plurality of transmit/receive isolation circuits; and

in a beamforming mode, couple, via a second set of high frequency switches of the plurality of high frequency switches, a set of antennas of the plurality of antennas to a second set of transmit/receive isolation circuits of the plurality of transmit/receive isolation circuits.

2. The configurable wireless communication device front end of claim 1, wherein the transmit/receive isolation circuit comprising:

a magnetic field biased circulator.

3. The configurable wireless communication device front end of claim 1, wherein the transmit/receive isolation circuit comprising:

a transformer having a center-tapped first winding and a second winding, wherein a first end of the center-tapped first winding is coupled to an antenna of the plurality of antennas via a high frequency switch of the plurality of high frequency switches, wherein a center-tap of the center-tapped first winding is coupled to the power amplifier, and the second winding is coupled to the low noise amplifier.

4. The configurable wireless communication device front end of claim 1 further comprising:

a second transmit/receive isolation circuit of the plurality of transmit/receive isolation circuits is coupled to a second power amplifier of the plurality of power amplifiers and to a second low noise amplifier of the plurality of low noise amplifiers, wherein the transmit/receive isolation circuit includes a first transformer and the second transmit/receive isolation circuit includes a second transformer, wherein each of the first and second transformers includes a center-tapped first winding and a second winding,

wherein a first end of the center-tapped first winding of the first transformer is coupled to a first antenna of the plurality of antennas via a first high frequency switch of the plurality of high frequency switches, wherein a center-tap of the center-tapped first winding of the first transformer is coupled to the power amplifier, and the second winding of the first transformer is coupled to the low noise amplifier,

wherein a first end of the center-tapped first winding of the second transformer is coupled to a second antenna of the plurality of antennas via a second high frequency switch of the plurality of high frequency switches, wherein a center-tap of the center-tapped first winding of the second transformer is coupled to the second power amplifier, and the second winding of the second transformer is coupled to the second low noise amplifier, and

wherein a second end of the center-tapped first winding of the first transformer is coupled to a second end of the center-tapped first winding of second first transformer such that transmit power is not dissipated to ground.

5. The configurable wireless communication device front end of claim 1, wherein the configuration module is further configured to:

in a power combining and beamforming mode, couple, via sets of high frequency switches of the plurality of high frequency switches, sets of antennas of the plurality of antennas to sets of transmit/receive isolation circuits of the plurality of transmit/receive isolation circuits.

6. The configurable wireless communication device front end of claim 1 further comprising:

the semiconductor substrate further supporting the plurality of transmit/receive isolation circuits.

7. The configurable wireless communication device front end of claim 1 further comprising:

one or more adjustable phase shifters coupled to one or more transmit/receive isolation circuits of the plurality of transmit/receive isolation circuits, wherein the one or more adjustable phase shifters are enabled in the beamforming mode by the configuration module.

8. The configurable wireless communication device front end of claim 1 further comprising:

a receive power combining circuit configured to combine, in the power combining mode, a set of inbound signals received from a set of low noise amplifiers of the plurality of low noise amplifiers coupled to the set of transmit/receive isolation circuits.

9. A method for configuring a wireless communication device, the method comprising:

determining, by one or more processing devices of the wireless communication device, a power combining mode or a beamforming mode;

when the power combining mode is determined;

selecting;

an antenna of a plurality of antennas;

a set of high frequency switches of a plurality of high frequency switches;

a set of transmit/receive isolation circuits of a plurality of transmit/receive isolation circuits, wherein a transmit/receive isolation circuit of the plurality of transmit/receive isolation circuits is coupled to a power amplifier of a plurality of power amplifiers and to a low noise amplifier of a plurality of low noise amplifiers; and

enabling coupling of the set of transmit/receive isolation circuits to the antenna via the set of high frequency switches; and

when the beamforming mode is determined;

selecting;

a set of antennas of the plurality of antennas;

a second set of high frequency switches of the plurality of high frequency switches;

a second set of transmit/receive isolation circuits of the plurality of transmit/receive isolation circuits; and

enabling coupling of the second set of transmit/receive isolation circuits to the set of antennas via the second set of high frequency switches.

10. The method of claim 9, wherein at least one of the selecting in the power combining mode and the beamforming mode comprising:

selecting a type of transmit/receive isolation circuit, wherein the type of transmit/receive isolation circuit includes;

a magnetic field biased circulator; and

a transformer having a center-tapped first winding and a second winding, wherein a first end of the center-tapped first winding is coupled to an antenna of the plurality of antennas via a high frequency switch of the plurality of high frequency switches, wherein a center-tap of the center-tapped first winding is coupled to the power amplifier, and the second winding is coupled to the low noise amplifier.

11. The method of claim 9 further comprising:

determining a power combining and beamforming mode, wherein, in the power combining and beamforming mode;

selecting;

sets of antennas of the plurality of antennas;

sets of high frequency switches of the plurality of high frequency switches;

sets of transmit/receive isolation circuits of the plurality of transmit/receive isolation circuits; and

enabling coupling of the sets of transmit/receive isolation circuits to the sets of antennas via the sets of high frequency switches.

12. The method of claim 9 further comprising:

enabling one or more adjustable phase shifters that are coupled to one or more transmit/receive isolation circuits of the plurality of transmit/receive isolation circuits when in the beamforming mode.

13. The method of claim 9 further comprising:

enabling power combining of a set of inbound signals received from a set of low noise amplifiers of the plurality of low noise amplifiers coupled to the set of transmit/receive isolation circuits when in the power combining mode.

14. A configurable wireless communication device comprising:

a baseband processing module configured to;

convert outbound data into an outbound symbol stream; and

convert an inbound symbol stream into inbound data;

a transmitter section configured to convert the outbound symbol stream into an outbound signal, wherein the transmitter section includes a plurality of power amplifiers;

a receiver section configured to convert an inbound signal into the inbound symbol stream, wherein the receiver section includes a plurality of low noise amplifiers;

an antenna;

a plurality of transmit/receive isolation circuits, wherein a transmit/receive isolation circuit of the plurality of transmit/receive isolation circuits is coupled to a power amplifier of the plurality of power amplifiers and to a low noise amplifier of the plurality of low noise amplifiers;

a plurality of high frequency switches; and

a configuration module configured to, in a power combining mode, couple, via a set of high frequency switches of the plurality of high frequency switches, the antenna to a set of transmit/receive isolation circuits of the plurality of transmit/receive isolation circuits, wherein a number of the transmit/receive isolation circuits in the set of transmit/receive isolation circuits is based on a desired combined transmit power.

15. The configurable wireless communication device of claim 14 further comprises:

a plurality of antennas that includes the antenna; and

the configuration module is further configured to, in a beamforming mode, couple, via a second set of high frequency switches of the plurality of high frequency switches, a set of antennas of the plurality of antennas to a second set of transmit/receive isolation circuits of the plurality of transmit/receive isolation circuits.

16. The configurable wireless communication device of claim 14, wherein the transmit/receive isolation circuit comprising one of:

a magnetic field biased circulator; and

a transformer having a center-tapped first winding and a second winding, wherein a first end of the center-tapped first winding is coupled to an antenna of the plurality of antennas via a high frequency switch of the plurality of high frequency switches, wherein a center-tap of the center-tapped first winding is coupled to the power amplifier, and the second winding is coupled to the low noise amplifier.

17. The configurable wireless communication device of claim 14 further comprising:

a second transmit/receive isolation circuit of the plurality of transmit/receive isolation circuits is coupled to a second power amplifier of the plurality of power amplifiers and to a second low noise amplifier of the plurality of low noise amplifiers, wherein the transmit/receive isolation circuit includes a first transformer and the second transmit/receive isolation circuit includes a second transformer, wherein each of the first and second transformers includes a center-tapped first winding and a second winding,

wherein a first end of the center-tapped first winding of the first transformer is coupled to a first antenna of the plurality of antennas via a first high frequency switch of the plurality of high frequency switches, wherein a center-tap of the center-tapped first winding of the first transformer is coupled to the power amplifier, and the second winding of the first transformer is coupled to the low noise amplifier,

wherein a first end of the center-tapped first winding of the second transformer is coupled to a second antenna of the plurality of antennas via a second high frequency switch of the plurality of high frequency switches, wherein a center-tap of the center-tapped first winding of the second transformer is coupled to the second power amplifier, and the second winding of the second transformer is coupled to the second low noise amplifier, and

wherein a second end of the center-tapped first winding of the first transformer is coupled to a second end of the center-tapped first winding of second first transformer such that transmit power is not dissipated to ground.

18. The configurable wireless communication device of claim 14, wherein the configuration module is further configured to:

in a power combining and beamforming mode, couple, via sets of high frequency switches of the plurality of high frequency switches, sets of antennas of a plurality of antennas to sets of transmit/receive isolation circuits of the plurality of transmit/receive isolation circuits.

19. The configurable wireless communication device of claim 14 further comprising:

a semiconductor substrate supporting the plurality of transmit/receive isolation circuits, the plurality of power amplifiers, and the plurality of low noise amplifiers.

20. The configurable wireless communication device of claim 14 further comprising at least one of:

one or more adjustable phase shifters coupled to one or more transmit/receive isolation circuits of the plurality of transmit/receive isolation circuits, wherein the one or more adjustable phase shifters are enabled in the beamforming mode by the configuration module; and

a receive power combining circuit configured to combine, in the power combining mode, a set of inbound signals received from a set of low noise amplifiers of the plurality of low noise amplifiers coupled to the set of transmit/receive isolation circuits.