Variable circuit

Patent metadata

Field	Value
Publication number	US-12283409-B2
Application number	US-202318361313-A
Country	US
Kind code	B2
Filing date	Jul 28, 2023
Priority date	Jan 28, 2021
Publication date	Apr 22, 2025
Grant date	Apr 22, 2025

Abstract

A variable circuit includes a switch including a plurality of input terminals and a plurality of output terminals and an external wiring line. The multiple input terminals include a first input terminal to which a first input signal is inputted and a second input terminal to which a second input signal is inputted. The multiple output terminals include a first output terminal from which a first output signal is outputted and a second output terminal from which a second output signal is outputted. The switch is capable of forming at least one internal connection path electrically connecting any one of the multiple input terminals and any one of the multiple output terminals. The external wiring line is disposed outside the switch and is configured to electrically connect the second output terminal to the second input terminal.

First claim

The invention claimed is:

1. A variable circuit comprising:
a switch comprising a plurality of input terminals and a plurality of output terminals; and
an external wiring line,
wherein the plurality of input terminals comprises a first input terminal to which a first input signal is input and a second input terminal to which a second input signal is input,
wherein the plurality of output terminals comprises a first output terminal from which a first output signal is output and a second output terminal from which a second output signal is output,
wherein the switch is configured to form at least one internal connection path electrically connecting any one of the plurality of input terminals to any one of the plurality of output terminals, and
wherein the external wiring line is outside the switch and is configured to electrically connect the second output terminal to the second input terminal such that the second output signal output from the second output terminal is input to the second input terminal as the second input signal.

2. The variable circuit according to claim 1 ,
wherein the plurality of input terminals further comprises a third input terminal to which a third input signal is input,
wherein the plurality of output terminals further comprises a third output terminal from which a third output signal is output,
wherein the variable circuit further comprises a second external wiring line that is configured to electrically connect the third output terminal to the third input terminal such that the third output signal output from the third output terminal is input to the third input terminal as the third input signal, and
wherein the second external wiring line is outside the switch.

3. The variable circuit according to claim 2 , wherein the switch is further configured to form a plurality of the internal connection paths electrically connecting any one of the plurality of input terminals and the plurality of output terminals to two or more of the plurality of input terminals and the plurality of output terminals.

4. The variable circuit according to claim 1 ,
wherein the plurality of output terminals further comprises a fourth output terminal to which a fourth input signal is input via the at least one internal connection path,
wherein the variable circuit further comprises a second external wiring line that has a first end electrically connected to the fourth output terminal and a second end connected to ground, and
wherein the second external wiring line is outside the switch.

5. The variable circuit according to claim 1 , wherein a circuit element is on the external wiring line.

6. The variable circuit according to claim 1 , wherein the external wiring line is an inductor.

7. The variable circuit according to claim 1 , wherein the external wiring line is on or in a substrate.

Assignees

• Murata Manufacturing Co

Inventors

• Ikegami Katsuya
• Takahashi Wataru

Classifications

• H03H7/461

  particularly adapted for use in common antenna systems · CPC title

• H03H7/0115

  comprising only inductors and capacitors (H03H7/075, H03H7/09, H03H7/12, H03H7/13 take precedence) · CPC title

• H04B1/18 Primary

  Input circuits, e.g. for coupling to an antenna or a transmission line (coupling networks between antennas or lines and receivers independent of the nature of the receiver H03H) · CPC title

• H03H2210/036

  Stepwise · CPC title

• H03H2210/026

  Inductor · CPC title