Transmission/reception module

Patent metadata

Field	Value
Publication number	US-2023018236-A1
Application number	US-202217811923-A
Country	US
Kind code	A1
Filing date	Jul 12, 2022
Priority date	Jul 16, 2021
Publication date	Jan 19, 2023
Grant date	—

Abstract

A transmission/reception module includes a substrate including a transmission signal input terminal, a reception signal output terminal, and an antenna terminal, an antenna switch circuit provided on the substrate and configured to output a transmission signal input from the transmission signal input terminal to the antenna terminal and configured to output a reception signal input from the antenna terminal to the reception signal output terminal, and a first inductor included in an input/output filter circuit provided between the antenna switch circuit and the antenna terminal. The first inductor includes a conductor whose winding axis direction is orthogonal to the substrate.

First claim

What is claimed is:

1 . A transmission/reception module comprising:
a substrate comprising a transmission signal input terminal, a reception signal output terminal, and an antenna terminal; an antenna switch circuit on the substrate, the antenna switch circuit configured to output a transmission signal input from the transmission signal input terminal to the antenna terminal, and configured to output a reception signal input from the antenna terminal to the reception signal output terminal; and a first inductor connected between the antenna switch circuit and the antenna terminal, the first inductor being part of an input/output filter, wherein the first inductor comprises a conductor whose winding axis direction is orthogonal to the substrate.

2 . The transmission/reception module according to claim 1 , wherein the first inductor is a series inductor connected in series in a path connecting the antenna switch circuit to the antenna terminal.

3 . The transmission/reception module according to claim 2 , wherein another impedance circuit element is not connected in parallel to the first inductor.

4 . The transmission/reception module according to claim 1 ,
wherein the input/output filter circuit comprises a fourth inductor different from the first inductor, and wherein the fourth inductor is a shunt inductor connected in series in a shunt path connecting ground and a path connecting the antenna switch circuit to the antenna terminal, and comprises a conductor whose winding axis direction is orthogonal to the substrate.

5 . The transmission/reception module according to claim 1 ,
wherein the input/output filter circuit further comprises an additional inductor that is different from the first inductor, and wherein the additional inductor comprises a conductor whose winding axis direction is orthogonal to the substrate.

6 . The transmission/reception module according to claim 1 , further comprising:
a second inductor connected between the antenna switch circuit and the reception signal output terminal, the second inductor being part of a matching circuit.

7 . The transmission/reception module according to claim 6 , further comprising:
a low noise amplifier circuit connected in a path between the antenna switch circuit and the reception signal output terminal; and a low noise amplifier input switch circuit connected between the antenna switch circuit and the low noise amplifier circuit, wherein the second inductor is connected between the low noise amplifier circuit and the low noise amplifier input switch circuit.

8 . The transmission/reception module according to claim 6 , wherein the second inductor comprises a conductor whose winding axis direction is parallel to the substrate.

9 . The transmission/reception module according to claim 1 , further comprising:
a third inductor connected between the antenna switch circuit and the transmission signal input terminal, the third inductor being part of a matching circuit.

10 . The transmission/reception module according to claim 9 , further comprising:
a power amplifier circuit connected in a path between the antenna switch circuit and the transmission signal input terminal; and a power amplifier output switch circuit connected between the antenna switch circuit and the power amplifier circuit, wherein the third inductor is connected between the power amplifier circuit and the power amplifier output switch circuit.

11 . The transmission/reception module according to claim 9 , wherein the third inductor comprises a conductor whose winding axis direction is parallel to the substrate.

12 . The transmission/reception module according to claim 1 , further comprising:
a second inductor connected between the antenna switch circuit and the reception signal output terminal; and a third inductor connected between the antenna switch circuit and the transmission signal input terminal, the second and third inductors being part of a matching circuit, wherein, on the substrate, a winding axis direction of a conductor of the second inductor and a winding axis direction of a conductor of the third inductor are different from each other.

13 . The transmission/reception module according to claim 1 ,
wherein the substrate is a multilayer substrate in which a plurality of wiring layers is laminated with an insulator layer interposed between the wiring layers, and a ground wiring overlapping the first inductor in a top view is not in the wiring layer adjacent in a lamination direction to the wiring layer to which the first inductor is connected.

14 . The transmission/reception module according to claim 13 , further comprising:
a second inductor connected between the antenna switch circuit and the reception signal output terminal; and a third inductor connected between the antenna switch circuit and the transmission signal input terminal, the second and third inductors being part of a matching circuit, wherein each of the second inductor and the third inductor comprises a conductor whose winding axis direction is orthogonal to the substrate, and wherein in the substrate, the wiring layer adjacent in the lamination direction to the wiring layer connected with the second or third inductor does not have a ground wiring overlapping the second or third inductor in the top view.

15 . The transmission/reception module according to claim 13 , further comprising:
a shield case covering a component mounting surface of the substrate.

Assignees

• Murata Manufacturing Co

Inventors

• Ikarashi Kazuhiro
• Ikegami Katsuya

Classifications

• H03F1/565

  using inductive elements · CPC title

• H03F2200/387

  A circuit being added at the output of an amplifier to adapt the output impedance of the amplifier · CPC title

• H04B1/40 Primary

  Circuits · CPC title

• H03F2200/294

  the amplifier being a low noise amplifier [LNA] · CPC title

• H03F2200/451

  the amplifier being a radio frequency amplifier · CPC title