Power amplification module

Patent metadata

Field	Value
Publication number	US-10250209-B2
Application number	US-201815970074-A
Country	US
Kind code	B2
Filing date	May 3, 2018
Priority date	Sep 21, 2016
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

Abstract

Provided is a power amplification module that supports a plurality of communication systems. The power amplification module includes: two power amplifiers that can be selectively connected in parallel with each other; a switch that, in accordance with one communication system selected from among the plurality of communication systems, selects one power amplifier that is to operate by itself from among the two power amplifiers or selects the two power amplifiers and connects the two power amplifiers in parallel with each other; and a phase correction circuit that, when the two power amplifiers are both selected, corrects a phase difference by being selectively connected between the outputs of the two selected power amplifiers such that a phase difference is not generated between the output signals of the two selected power amplifiers.

First claim

What is claimed is:

1. A power amplification module that supports a plurality of communication systems, the power amplification module comprising:
two power amplifiers, wherein, based on a control signal outputted from a control circuit, the control signal indicating a communication system selected from among the plurality of communication systems, either:
one of the two power amplifiers operates by itself, or
the two power amplifiers operate in parallel with each other; and

a phase correction circuit that, when the two power amplifiers operate in parallel, is connected between outputs of the two power amplifiers and is configured to remove a phase difference between output signals of the two power amplifiers.

2. The power amplification module according to claim 1 , further comprising:
a plurality of matching networks that are selectively connected to inputs and the outputs of the two power amplifiers and are configured to perform input impedance matching and output impedance matching.

3. The power amplification module according to claim 1 , further comprising:
a switch that selectively connects the phase correction circuit between the outputs of the two power amplifiers.

4. The power amplification module according to claim 2 , further comprising:
a switch that selectively connects the phase correction circuit between the outputs of the two power amplifiers.

5. The power amplification module according to claim 1 , further comprising:
a second phase correction circuit that, when the two power amplifiers are connected in parallel, is connected between inputs of the two power amplifiers and is configured to remove a phase difference between input signals of the two power amplifiers.

6. The power amplification module according to claim 1 ,
wherein the phase correction circuit comprises a resistor and a capacitor connected in parallel.

7. A power amplification module that supports a plurality of communication systems, the power amplification module comprising:
at least three power amplifiers, wherein, based on a control signal outputted from a control circuit, the control signal indicating a communication system selected from among the plurality of communication systems, either:
only one of the at least three power amplifiers operates by itself, or
at least two of the at least three power amplifiers operate in parallel with each other; and

at least one output phase correction circuit that, when the at least two power amplifiers are connected in parallel, is connected between outputs of two of the at least two power amplifiers and is configured to remove a phase difference between output signals of the two of the at least two power amplifiers.

8. The power amplification module according to claim 7 ,
wherein the one of the at least three power amplifiers operates by itself based on the selected communication system and a transmission power corresponding to the selected communication system.

9. The power amplification module according to claim 7 , further comprising:
a plurality of matching networks that are connected to inputs and the outputs of the at least two power amplifiers and are configured to perform input impedance matching and output impedance matching.

10. The power amplification module according to claim 7 , further comprising:
one or more switches that selectively connect the at least one output phase correction circuit between the outputs of the at least two power amplifiers.

11. The power amplification module according to claim 7 , further comprising:
at least one input phase correction circuit that, when the at least two power amplifiers are connected in parallel, is connected between inputs of two of the at least two power amplifiers and is configured to remove a phase difference between input signals of the two of the at least two power amplifiers.

12. The power amplification module according to claim 7 ,
wherein the at least one output phase correction circuit comprises a resistor and a capacitor connected in parallel.

Assignees

• Murata Manufacturing Co
• Murata Manugacturing Co Ltd

Inventors

• Tsutsui Takayuki
• Harima Fumio

Classifications

• H04B1/40

  Circuits · CPC title

• H03F2203/7209

  the gated amplifier being switched from a first band to a second band · CPC title

• H03F3/211

  using a combination of several amplifiers (H03F3/60 takes precedence) · CPC title

• H03F1/56

  Modifications of input or output impedances, not otherwise provided for · CPC title

• H04B1/006

  using switches for selecting the desired band (H04B1/0057 takes precedence) · CPC title