Resonator and frequency-tunable resonator
AssigneesNEC Corporation, National Institute of Advanced Industrial Science and Technology
InventorsYohei Kawakami, Tomohiro Yamaji, Yoshiro Urade, Aiko Yamaguchi
Life of this patent
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Abstract
An object is to provide a stepped impedance resonator capable of efficiently reducing a footprint. A resonator includes a coplanar waveguide and a section. The coplanar waveguide has a first impedance. The section has a second impedance different from the first impedance and includes a fishbone waveguide. The resonator is configured as a stepped impedance resonator in which the coplanar waveguide and the section including the fishbone waveguide are connected in series.
Claims10
A resonator comprising:
- a coplanar waveguide having a first impedance;
- and
- a section having a second impedance different from the first impedance and including a fishbone waveguide, wherein
- the resonator is configured as a stepped impedance resonator in which the coplanar waveguide and the section including the fishbone waveguide are connected in series,
- waveguides included in the section including the fishbone waveguide are impedance-matched,
- the coplanar waveguide having the first impedance is configured as a curved waveguide,
- the section including the fishbone waveguide includes a plurality of sections in which the fishbone waveguides are respectively arranged and a plurality of the curved waveguides, and
- two adjacent sections of the plurality of sections are connected by one of the plurality of the curved waveguides.
A frequency-tunable resonator comprising:
- a resonator;
- an external resonator whose resonance frequency is controlled in response to a control signal;
- and
- a control port to which the control signal is input, wherein
- one end of the resonator is magnetically connected to the external resonator,
- the other end of the resonator is electrically connected to the control port, and
- a resonance frequency of the resonator is different from a resonance frequency of the external resonator, wherein
- the resonator comprises:
- a coplanar waveguide having a first impedance;
- and
- a section having a second impedance different from the first impedance and including a fishbone waveguide,
- the resonator is configured as a stepped impedance resonator in which the coplanar waveguide and the section including the fishbone waveguide are connected in series.
Dependencies are inferred from the claim text.