MULTIBAND MATCHING CIRCUIT
First Claim
1. A multiband matching circuit comprising:
- an input terminal configured to be connected to an alternating-current circuit;
a first output terminal configured to be connected to a device having a predetermined impedance;
a second output terminal configured to be connected to a device having a predetermined impedance;
an inductive element having one end connected to the input terminal;
a first switch having one end connected to an other end of the inductive element and an other end grounded;
a capacitive element having one end connected to the input terminal;
a second switch having one end connected to an other end of the capacitive element and an other end grounded;
a first-band matching circuit inserted between the first output terminal and a first connection point of the inductive element and the first switch, the first-band matching circuit matching an impedance at the first connection point to an impedance at the first output terminal in a first frequency band; and
a second-band matching circuit inserted between the second output terminal and a second connection point of the capacitive element and the second switch, the second-band matching circuit matching an impedance at the second connection point to an impedance at the second output terminal in a second frequency band higher than the first frequency band.
1 Assignment
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Accused Products
Abstract
A multiband matching circuit of the present invention includes an inductive element having one end connected to an input terminal, a first switch having one end connected to the other end of the inductive element and the other end grounded, a capacitive element having one end connected to the input terminal, a second switch having one end connected to the other end of the capacitive element and the other end grounded, a first-band matching circuit that is connected between the other end of the inductive element and a first output terminal and performs impedance matching in a first frequency band, and a second-band matching circuit that is connected between the other end of the capacitive element and a second output terminal and performs impedance matching in a second frequency band higher than the first frequency band.
6 Citations
4 Claims
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1. A multiband matching circuit comprising:
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an input terminal configured to be connected to an alternating-current circuit; a first output terminal configured to be connected to a device having a predetermined impedance; a second output terminal configured to be connected to a device having a predetermined impedance; an inductive element having one end connected to the input terminal; a first switch having one end connected to an other end of the inductive element and an other end grounded; a capacitive element having one end connected to the input terminal; a second switch having one end connected to an other end of the capacitive element and an other end grounded; a first-band matching circuit inserted between the first output terminal and a first connection point of the inductive element and the first switch, the first-band matching circuit matching an impedance at the first connection point to an impedance at the first output terminal in a first frequency band; and a second-band matching circuit inserted between the second output terminal and a second connection point of the capacitive element and the second switch, the second-band matching circuit matching an impedance at the second connection point to an impedance at the second output terminal in a second frequency band higher than the first frequency band. - View Dependent Claims (2, 3, 4)
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Specification