Multi-band power amplifier module for wireless communication devices

• US 20060158252A1
• Filed: 07/02/2005
• Published: 07/20/2006
• Est. Priority Date: 01/19/2005
• Status: Active Grant

• Current Assignee: Micro Mobio Corporation
• Original Assignee: Micro Mobio Corporation
• Inventors: Kubota, Kanya, Ichitsubo, Ikuroh
• Granted Patent: US 7,091,775 B2
• Time in Patent Office: Days
• US Class Current: 330/126
• CPC Class Codes: H01L 2224/48227 connecting the wire to a bond pad of the item
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/1305 Bipolar Junction Transistor [BJT]
• CPC Class Codes: H01L 2924/14 Integrated circuits
• CPC Class Codes: H01L 2924/19041 being a capacitor
• CPC Class Codes: H01L 2924/3011 Impedance
• CPC Class Codes: H03F 1/0261 with control of the polarisation voltage or current, e.g. gliding Class A
• CPC Class Codes: H03F 1/30 Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in differential amplifiers H03F3/45479
• CPC Class Codes: H03F 2200/111 the amplifier being a dual or triple band amplifier, e.g. 900 and 1800 MHz, e.g. switched or not switched, simultaneously or not
• CPC Class Codes: H03F 2200/294 the amplifier being a low noise amplifier [LNA]
• CPC Class Codes: H03F 2200/372 Noise reduction and elimination in amplifier
• CPC Class Codes: H03F 2200/39 Different band amplifiers are coupled in parallel to broadband the whole amplifying circuit
• CPC Class Codes: H03F 2200/465 Power sensing
• CPC Class Codes: H03F 3/195 in integrated circuits
• CPC Class Codes: H03F 3/211 using a combination of several amplifiers H03F3/60 takes precedence

Abstract

A multi-band power amplifier module includes a first power amplifier that amplifies a first input radio frequency signal in a first frequency band in response to a first bias control signal. A second power amplifier amplifies a second input radio frequency signal in a second frequency band in response to a second bias control signal. A first bias control circuit produces the first bias control signal and a second bias control circuit produces the second bias control signal in response to step gain signals received at a step gain terminal.

Claims

1. A multi-band power amplifier module, comprising:

a first power amplifier configured to amplify a first input radio frequency signal in a first frequency band in response to a first bias control signal to produce a first output radio frequency signal;

a first bias circuit configured to output tbe first bias control signal in response to the first step gain signal at the step gain terminal;

a second power amplifier configured to amplify a second input radio frequency signal in a second frequency band in response to a second bias control signal to produce a second output radio frequency signal; and

a second bias circuit configured to output the second bias control signal in response to the second step gain signal at the step gain terminal.

2. The multi-band power amplifier module of claim 1, further comprising

a power sensing terminal configured to receive a first power sensing signal and a second power sensing signal;

a first power sensing circuit configured to produce the first power sensing signal at the power sensing terminal, wherein the first power amplifier is configured to amplify the first input radio frequency signal in the first frequency band in response to the first power sensing signal; and

a second power sensing circuit configured to produce the second power sensing signal at the power sensing terminal, wherein the second power amplifier is configured to amplify the second input radio frequency signal in the second frequency band in response to the second power sensing signal.

3. The multi-band power amplifier module of claim 2, wherein the first power sensing circuit detects the first output radio frequency signal to produce the first power sensing signal at the power sensing terminal.

4. The multi-band power amplifier module of claim 3, wherein the first power sensing circuit detects the first output radio frequency signal by capacitance coupling.

5. The multi-band power amplifier module of claim 1, further comprising

two or more power supply terminals, wherein at least one power supply terminal is configured to supply power to the first power amplifier.

6. The multi-band power amplifier module of claim 5, wherein two or more power supply terminals simultaneously supply power to the first power amplifier.

7. The multi-band power amplifier module of claim 5, wherein the two or more power supply terminals and a step gain terminal are disposed along one side of the multi-band power amplifier module.

8. The multi-band power amplifier module of claim 1, wherein the frequency band is centered at about 2.5 GHz, 3.5 GHz, or 5 GHz

9. The multi-band power amplifier module of claim 1, further comprising

a first input terminal configured to receive the first input radio frequency signal in the first frequency band;

a second input terminal configured to receive the second input radio frequency signal in the second frequency band; and

one or more ground terminals connected to the to the first power amplifier or the second power amplifier;

wherein the first input terminal, the second input terminal, and the one or more ground terminals are disposed along one side of the multi-band power amplifier module.

10. The multi-band power amplifier module of claim 1, further comprising

a first output terminal configured to receive the first output radio frequency signal;

a second output terminal configured to receive the second output radio frequency signal; and

one or more ground terminals connected to the to the first power amplifier or the second power amplifier;

wherein the first output terminal, the second output terminal, and the one or more ground terminals are disposed along one side of the multi-band power amplifier module.

11. A multi-band power amplifier module, comprising:

a power sensing terminal configured to receive a first power sensing signal and a second power sensing signal;

a first power amplifier configured to amplify a first input radio frequency signal in a first frequency band in response to the first power sensing signal to produce a first output radio frequency signal;

a first power sensing circuit configured to produce the first power sensing signal at the power sensing terminal;

a second power amplifier configured to amplify a second input radio frequency signal in a second frequency band in response to the second power sensing signal to produced a second output radio frequency signal; and

a second power sensing circuit configured to produce the second power sensing signal at the power sensing terminal.

12. The multi-band power amplifier module of claim 11, wherein the first power sensing circuit detects the first output radio frequency signal to produce the first power sensing signal at the power sensing terminal.

13. The multi-band power amplifier module of claim 12, wherein the first power sensing circuit detects the first output radio frequency signal by capacitance coupling.

14. The multi-band power amplifier module of claim 11, further comprising

a step gain terminal configured to receive a first step gain signal and a second step gain signal;

a first bias control circuit configured to output a first bias control signal in response to the first step gain signal at the step gain terminal, wherein the first power amplifier is configured to amplify the first input radio frequency signal in the first frequency band in response to the first bias control signal; and

a second bias control circuit configured to output the second bias control signal in response to the second step gain signal at the step gain terminal, wherein the second power amplifier is configured to amplify the second input radio frequency signal in the second frequency band in response to the second bias control signal.

15. The multi-band power amplifier module of claim 11, further comprising

two or more power supply terminals, wherein at least one power supply terminal is configured to supply power to the first power amplifier.

16. The multi-band power amplifier module of claim 15, wherein two or more power supply terminals simultaneously supply power to the first power amplifier.

17. The multi-band power anplifier module of claim 15, wherein the two or more power supply terminals and the power sensing terminal are disposed along one side of the multi-band power amplifier module.

18. The multi-band power amplifier module of claim 11, wherein the frequency band is centered at about 2.5 GHz, 3.5 GHz, or 5 GHz.

19. The multi-band power amplifier module of claim 11, further comprising

a first input terminal configured to receive the first input radio frequency signal in the first frequency band;

a second input terminal configured to receive the second input radio frequency signal in the second frequency band; and

one or more ground terminals connected to the to the first power amplifier or the second power amplifier;

wherein the first input terminal, the second input terminal, and the one or more ground terminals are disposed along one side of the multi-band power amplifier module.

20. The multi-band power amplifier module of claim 11, further comprising

a first output terminal configured to receive the first output radio frequency signal;

a second output terminal configured to receive the second output radio frequency signal; and

one or more ground terminals connected to the to the first power amplifier or the second power amplifier;

wherein the first output terminal, the second output terminal, and the one or more ground terminals are disposed along one side of the multi-band power amplifier module.