Varactor-tunable radio frequency resonant circuits and components
AssigneeKnowles Cazenovia, Inc.
InventorsDenis Loxha, Gregory Charles Alton
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Abstract
A varactor-tunable radio frequency (RF) resonant circuit is disclosed. The circuit includes a planar impedance-controlled transmission line disposed on a dielectric substrate, and a voltage-controlled varactor diode, or an arrangement of parallel varactor diodes, electrically connecting a resonator of the planar transmission line to a reference node. The resonator can have a stepped impedance. A frequency of the resonator is tunable by configuration of a reverse bias voltage applied to the first plurality of voltage-controlled varactor diodes.
Claims20
A varactor-tunable radio frequency (RF) resonant circuit comprising:
- a planar impedance-controlled transmission line disposed on a dielectric substrate,
- the planar impedance-controlled transmission line comprising a first resonator;
- a first plurality of voltage-controlled varactor diodes arranged in parallel on the dielectric substrate and electrically interconnecting the first resonator and a reference node,
- wherein a frequency of the first resonator is tunable by configuration of a reverse bias voltage applied to the first plurality of voltage-controlled varactor diodes.
A varactor-tunable radio frequency (RF) resonant circuit comprising:
- a thin-film planar impedance-controlled transmission line disposed on a dielectric substrate,
- the thin-film planar impedance-controlled transmission line comprising a first resonator;
- a first plurality of voltage-controlled varactor diodes arranged in parallel on the dielectric substrate and electrically interconnecting the first resonator and a reference node,
- wherein a frequency of the first resonator is tunable by configuration of a reverse bias voltage applied to the first plurality of voltage-controlled varactor diodes.
A varactor-tunable radio frequency (RF) resonant circuit comprising:
- a thin-film planar impedance-controlled transmission line disposed on a ceramic substrate,
- a resonator disposed on the ceramic substrate, the resonator comprising a high-impedance lobe and a low-impedance lobe;
- a voltage-controlled varactor diode electrically connecting the low-impedance lobe of the resonator to a reference node,
- wherein a frequency of the resonator is tunable by configuration of a reverse bias voltage applied to the voltage-controlled varactor diode.
Dependencies are inferred from the claim text.