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US 5,475,350 AGranted
Frequency tunable resonator including a varactor
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsToru Yamada, Toshio Ishizaki, Yoshihiro Nakagawa, Makoto Sakakura, Koji Hashimoto, Toshiaki Nakamura
Life of this patent
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Abstract
A coupled capacitor substrate having thereon a plane capacitor which is integrally bonded on a dielectric resonator and a varactor which is mounted on the coupled capacitor substrate so as to couple the dielectric resonator via the plane capacitor.
Claims28
A frequency tunable resonator comprising:
- a dielectric resonator;
- a coupled capacitor substrate having a first surface and a second surface and being fixed on said dielectric resonator into an unitary configuration;
- a first electrode provided on said first surface of said coupled capacitor substrate;
- a second electrode provided on said second surface of said coupled capacitor substrate, said first electrode and said second electrode defining a plane capacitor;
- and
- a varactor mounted on said coupled capacitor substrate such that said dielectric resonator is coupled with said varactor via said plane capacitor.
3 more elements
A frequency tunable resonator including a varactor comprising:
- a dielectric resonator;
- a first substrate fixed on said dielectric resonator;
- a pair of electrodes, wherein each electrode in said pair of electrodes is provided on a separate surface portion of said first substrate such that said pair of electrodes define a plane capacitor;
- a second substrate providing an external circuit connection, wherein said first substrate, said dielectric resonator and said second substrate are fixed into a unitary configuration;
- and
- a terminal electrode disposed on said second substrate and electrically connected to said plane capacitor.
3 more elements
A frequency tunable resonator including a varactor comprising:
- a planar type dielectric resonator configured of an end short-circuited quarter-wavelength strip line and having a first side;
- a coupled capacitor substrate having a first surface and a second surface opposing said first surface, said coupled capacitor substrate being connected to said first side of said planar type dielectric resonator;
- a first electrode disposed on said first surface of said coupled capacitor substrate;
- a second electrode disposed on said second surface of said coupled capacitor substrate such that said first electrode and said second electrode define a plane capacitor;
- and
- a varactor having a first terminal and a second terminal, said second electrode being connected to said first terminal of said varactor thereby coupling said planar type dielectric resonator with said varactor via said plane capacitor.
3 more elements
A frequency tunable resonator comprising:
- a planar type dielectric resonator configured of an end short-circuited strip line electrode of substantially a quarter-wavelength;
- a coupled capacitor substrate having a first surface and a second surface and being fixed on said planar type dielectric resonator such that said first surface is proximate to said planar type dielectric resonator;
- a capacitor electrode disposed on said second surface of said coupled capacitor substrate, said capacitor electrode defining a capacitor between itself and said end short-circuited strip line electrode of said planar type dielectric resonator;
- and
- a varactor having a first terminal and a second terminal, said first terminal being connected to said capacitor electrode so as to couple said planar type dielectric resonator with said varactor.
2 more elements
A frequency tunable resonator including a varactor comprising:
- a coaxial type dielectric resonator configured of an end short-circuited transmission line of substantially a quarter-wavelength, a housing, an end portion, an inner conductor, and an outer conductor;
- an inner conductor connection electrode disposed at an end portion of said coaxial type dielectric resonator and connected to said inner conductor;
- a coupled capacitor substrate having a first surface and a second surface and being connected to said end portion of said coaxial type dielectric resonator;
- a first electrode provided on said first surface of said coupled capacitor substrate and connected to said inner conductor connection electrode;
- a second electrode disposed on a second surface of said coupled capacitor substrate opposing said first electrode so as to define a plane capacitor with said first electrode;
- and
- a varactor having a first terminal and a second terminal, said first terminal being connected to said second electrode so as to couple said coaxial dielectric resonator with said varactor via said plane capacitor.
4 more elements
Dependencies are inferred from the claim text.