| 摘要 |
An impedance matching circuit employed at a high frequency includes a coupling line having a length longer than +E,fra 1/4+EE of a wavelength at a design center frequency. Therefore, the impedance can be inductive and it is possible to impedance match a circuit comprising a transistor and having a capacitive impedance. The impedance matching circuit according to the present invention functions both as a dc blocking capacitor and an impedance matching circuit. Therefore, the degree of freedom in the circuit design is increased and the circuit can be reduced in size.
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