Tuning circuit
AssigneeGeneral Research of Electronics, Inc.
InventorKazuo Kawai
Life of this patent
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Abstract
In order to set up automatically Q value by optimal value, a tuning circuit connected a resonance circuit composed of an inductor and a capacitor, it is connected a resonance circuit of an inductor and a capacitor with a negative resistance circuit comprised of a dummy load resistance and a negative impedance transform circuit NIC in series, is constituted the tuning circuit. An operating circuit sets up dummy load resistance so that a negative resistance value is obtained Q value set up by setting section.
Claims3
A tuning circuit having a resonance circuit composed of an inductor and a capacitor and a negative resistance circuit connected to the resonance circuit in series, comprising:
- a setting means for calculating a serial resistance value of said resonance circuit and setting up a negative resistance value of said negative resistance circuit using said serial resistance value and a resistance value for obtaining a necessity Q value to an optimum resistance value.
Dependencies are inferred from the claim text.