Matching circuit

Details Matching circuit Matching circuit

2008-05-06

2010-02-02

Jones, Stephen E (Department: 2817)

Wave transmission lines and networks

Coupling networks

With impedance matching

Reexamination Certificate

active

07656249

ABSTRACT:
First, second and third matching parts110, 120, and130are connected in series between a circuit element199whose impedance has a frequency characteristic and a circuitry198having a constant impedance. The second matching part120has the capability of converting impedances. The first matching part110operates as an element having reactance values according to any of frequency bands selected by exclusive switching between on and off of switches118, 119and the third matching part130operates as an element having reactance values according to any of the frequency bands selected by switching between on and off of a switch133, thereby providing matching in each frequency band. A seventh reactance circuit131is configured on the basis of an interdependence relation with the configuration of a fifth reactance circuit115and an eighth reactance circuit132.

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