Title: Variable resonator
Application Number: 200610144503 Application Date: 2006.11.08
Publication Number: 1964130 Publication Date: 2007.05.16
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H01P1/20
Applicant(s) Name: NTT Docomo Inc. Address:
Inventor(s) Name: Kawai Kunihiro;Fukuda Atsushi;Okazaki Hiroshi;Nara
Attorney & Agent: taofeng bei
Abstract:
    The invention provides a variable resonator which has a wide range of frequency conversion and a low waste. A variable resonator has a dielectric substrate 2, an input/output line 3 formed on the dielectric substrate 2, a first resonator 4 that has one end connected to the input/output line 3 and the other end grounded, and a second resonator that has one end connected to the input/output line 3 at the point of connection of the one end of the first resonator 4 and the other end grounded via a terminal switch 7. When the terminal switch 7 is turned off, resonance occurs at a frequency at which the sum of the line lengths of the first resonator 4 and the second resonator 6 equals to a quarter of the wavelength. When the terminal switch 7 is turned on, resonance occurs at a frequency at which a half of the sum of the line lengths equals to a quarter of the wavelength.
Time: 5
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