Title:
HIGH-FREQUENCY CIRCUIT AND TRANSCEIVER CIRCUIT USING HIGH-FREQUENCY CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2015/093462
Kind Code:
A1
Abstract:
Provided are: a high-frequency circuit that is provided with a matching circuit that makes it possible to adjust the input/output impedance of a high-frequency device to an optimal value even when the high-frequency device comprises a circuit element in which the input/output impedance fluctuates in accordance with fluctuation in operating frequency; and a transceiver circuit that uses the high-frequency circuit. The high-frequency circuit comprises: a first high-frequency device (1); a second high-frequency device (3) that is electrically connected to the first high-frequency device (1); and a matching circuit (2) that is connected between the first high-frequency device (1) and the second high-frequency device (3). At least one of the first high-frequency device (1) and the second high-frequency device (3) is configured so as to comprise a variable device and has a variable operating frequency. The matching circuit (2) comprises at least one variable device that is capable of impedance matching in accordance with the operating frequencies of the first high-frequency device (1) and the second high-frequency device (3).
Inventors:
WADA TAKAYA (JP)
Application Number:
PCT/JP2014/083223
Publication Date:
June 25, 2015
Filing Date:
December 16, 2014
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H04B1/40; H03H7/01; H03H7/38; H03H7/46
Domestic Patent References:
| WO2013027580A1 | 2013-02-28 |
Foreign References:
| JP2009545240A | 2009-12-17 | |||
| JP2001512642A | 2001-08-21 | |||
| JP2011521508A | 2011-07-21 |
Attorney, Agent or Firm:
FUKUNAGA Masaya (JP)
Masaya Fukunaga (JP)
Masaya Fukunaga (JP)
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