TUNABLE HYBRID COUPLER
First Claim
1. A tunable hybrid coupler comprising:
- a first port, a second port, a third port, and a fourth port;
a first inductive element having a first inductance and connected from the first port to the third port;
a second inductive element having a second inductance and connected from the second port to the fourth port, wherein the second inductive element is mutually coupled to the first inductive element;
a first variable capacitive element having a first variable capacitance, wherein the first variable capacitive element is coupled between the first port and the second port; and
a second variable capacitive element having a second variable capacitance, wherein the second variable capacitive element is coupled between the third port and the fourth port.
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Accused Products
Abstract
This disclosure includes embodiments of a tunable hybrid coupler. The tunable hybrid coupler includes a first inductive element having a first inductance, a second inductive element having a second inductance and mutually coupled to the first inductive element, a first variable capacitive element having a first variable capacitance, and a second variable capacitance having a second variable capacitance. The first variable capacitive element is coupled between a first port and a second port. The second variable capacitive element is coupled between a third port and a fourth port. The first inductive element is coupled from the first port to the third port, while the second inductive element is coupled from the second port to the fourth port. Accordingly, the tunable hybrid coupler may form an impedance matching network that is tunable to different RF communication bands. The tunable hybrid coupler may thus be included in a tunable RF duplexer.
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Citations
20 Claims
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1. A tunable hybrid coupler comprising:
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a first port, a second port, a third port, and a fourth port; a first inductive element having a first inductance and connected from the first port to the third port; a second inductive element having a second inductance and connected from the second port to the fourth port, wherein the second inductive element is mutually coupled to the first inductive element; a first variable capacitive element having a first variable capacitance, wherein the first variable capacitive element is coupled between the first port and the second port; and a second variable capacitive element having a second variable capacitance, wherein the second variable capacitive element is coupled between the third port and the fourth port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification