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US 11,699,983 B2Granted
Directional coupler
AssigneeMurata Manufacturing Co., Ltd.
InventorsDaisuke Tokuda, Ryangsu Kim, Yasushi Shigeno, Katsuya Shimizu
Life of this patent
Estimating the term…
Abstract
A directional coupler (2) includes a main line (11), a sub-line (12), a variable terminator (13), and a variable filter circuit (15). The variable terminator (13) is a variable impedance circuit that terminates one end portion of the sub-line (12). The variable filter circuit (15) is connected to the other end portion of the sub-line (12). The variable filter circuit (15) may include a filter, a bypass path, and a switch which is connected to at least one of the filter and the bypass path.
Claims7
A directional coupler comprising:
- a main line;
- a sub-line;
- a variable impedance circuit configured to terminate a first end of the sub-line;
- and
- a variable filter circuit that is connected to a second end of the sub-line,
- wherein the variable filter circuit comprises:
- a filter in a filter path;
- a bypass path;
- a first switch connected in series in the filter path;
- a second switch connected between ground and the filter path;
- and
- a third switch connected in series in the bypass path,
- wherein the variable filter circuit is configured to selectively connect the second end of the subline to the filter and the filter path, or to the bypass path,
- wherein the third switch is on a substrate,
- wherein as seen in a plan view of the substrate, a wiring element is between an input terminal and an output terminal of the third switch, and
- wherein the wiring element has a ground potential.
13 more elements
Dependencies are inferred from the claim text.