Back to results
US 12,614,831 B2Granted
Directional coupler, high frequency module, and communication apparatus
AssigneeMurata Manufacturing Co., Ltd.
InventorsYuuta Miyazaki, Koji Furutani, Naoya Akashi
Life of this patent
Estimating the term…
Abstract
A directional coupler includes a main line, a first sub-line, a second sub-line, a first phase shift circuit, a first short-circuit path, and a first short-circuit switch. The first phase shift circuit is connected between the first sub-line and the second sub-line. The first short-circuit path short-circuits both ends of the first phase shift circuit. The first short-circuit switch switches between conduction and non-conduction of the first short-circuit path.
Claims16
A directional coupler comprising:
- a main line;
- a first sub-line;
- a second sub-line;
- a first phase shift circuit that is connected between the first sub-line and the second sub-line;
- a first short-circuit path that short-circuits both ends of the first phase shift circuit;
- and
- a first short-circuit switch that is configured to selectively switch between conduction and non-conduction of the first short-circuit path,
- wherein the first short-circuit switch is connected in parallel with the first phase shift circuit, and
- wherein the main line comprises a first main line and a second main line that are connected in series.
6 more elements
A directional coupler comprising:
- a main line;
- a first sub-line;
- a second sub-line;
- a first phase shift circuit that is connected between the first sub-line and the second sub-line;
- a first short-circuit path that short-circuits both ends of the first phase shift circuit;
- a first short-circuit switch that is configured to selectively switch between conduction and non-conduction of the first short-circuit path;
- a third sub-line;
- a second phase shift circuit that is connected between the second sub-line and the third sub-line;
- a second short-circuit path that short-circuits both ends of the second phase shift circuit;
- a second short-circuit switch configured to selectively switch between conduction and non-conduction of the second short-circuit path;
- a first selector switch configured to selectively connect the second sub-line and the first phase shift circuit;
- and
- a second selector switch configured to selectively connect the second sub-line and the second phase shift circuit,
- wherein the first short-circuit switch is connected in parallel with the first phase shift circuit.
11 more elements
A high frequency module comprising:
- a directional coupler comprising:
- a main line;
- a first sub-line;
- a second sub-line;
- a first phase shift circuit that is connected between the first sub-line and the second sub-line;
- a first short-circuit path that short-circuits both ends of the first phase shift circuit;
- and
- a first short-circuit switch that is configured to selectively switch between conduction and non-conduction of the first short-circuit path;
- an antenna terminal;
- a plurality of filters;
- and
- an antenna switch configured to selectively connect a signal path between the antenna terminal and the plurality of filters,
- wherein the main line of the directional coupler is in the signal path, and
- wherein the first short-circuit switch is connected in parallel with the first phase shift circuit.
11 more elements
Dependencies are inferred from the claim text.