# US 2019/0378792 A1 · Switching device

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- Number: US 2019/0378792 A1
- Document ID: US20190378792A1
- Status: Published application
- Kind: A1
- Application number: 16/549,376
- Filed: 2019-08-23
- Published: 2019-12-12
- Earliest claimed: 2017-02-28
- Assignees: Murata Manufacturing Co., Ltd.
- Applicants: Murata Manufacturing Co., Ltd.
- Inventors: Kenta SEKI
- Web page: https://patentgrep.com/patent/US20190378792A1

## CPC

- H04B 1/0458: {Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages (matching circuits in general H03H)}
- H10W 20/43: Layouts of interconnections
- H10D 84/00: Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers
- H10D 84/038: {using silicon technology, e.g. SiGe}
- H10W 44/20: at high-frequency [HF] or radio frequency [RF]
- H10W 72/00: Interconnections or connectors in packages
- H10W 44/203: {Electrical connections}
- H04B: TRANSMISSION
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES

## Abstract

A switching device includes first to third layers laminated in sequence above a principal surface of a substrate, a plurality of input terminals, a plurality of output terminals, a plurality of switching circuits, and a plurality of channels. Each of the channels electrically connecting one of the plurality of input terminals and one of the plurality of output terminals with one of the plurality of switching circuits interposed therebetween. The plurality of channels include a first channel and a second channel that intersect with each other when the principal surface of the substrate is seen in a plan view. In an intersection area where the first and second channels intersect with each other, the first channel is disposed on the first layer, the second channel is disposed on the third layer, and none of the plurality of channels is disposed on the second layer.

## Claims

### Claim 1

A switching device comprising:
first to third layers laminated in sequence on or above a principal surface of a substrate;
a plurality of input terminals;
a plurality of output terminals;
a plurality of switching circuits; and
a plurality of channels, each of the channels electrically connecting one of the plurality of input terminals and one of the plurality of output terminals via one of the plurality of switching circuits,
wherein the plurality of channels include a first channel and a second channel intersecting with each other when the principal surface of the substrate is seen in a plan view, and
in an intersection area where the first and second channels intersect with each other, the first channel is disposed on the first layer, the second channel is disposed on the third layer, and none of the plurality of channels is disposed on the second layer.

### Claim 2 (depends on 1)

The switching device according to claim 1, wherein a number of the intersection area is only one.

### Claim 3 (depends on 2)

The switching device according to claim 2, wherein a number of the plurality of input terminals is three,
a number of the plurality of output terminals is three,
a number of the plurality of channels is nine, and
each of the plurality of input terminals and each of the plurality of output terminals are electrically connected.

### Claim 4 (depends on 1)

The switching device according to claim 1, further comprising a plurality of layers including the first layer, the second layer, and the third layer, wherein
the first layer is not closest to the substrate among the plurality of layers.

### Claim 5 (depends on 1)

The switching device according to claim 1, further comprising a plurality of layers including the first layer, the second layer, and the third layer, at least two of the plurality of layers have different thickness from each other, wherein
the plurality of channels relatively thick among the plurality of the layers, except in the intersection area.

### Claim 6 (depends on 1)

The switching device according to claim 1, further comprising a plurality of layers including the first layer, the second layer, and the third layer, at least two of the plurality of layers have different thickness from each other, wherein the first layer is a layer which is the thickest among the plurality of the layers.