Title: Voltage control oscillator
Application Number: 200580018351 Application Date: 2005.03.07
Publication Number: 1965471 Publication Date: 2007.05.16
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H03B5/12;H03H11/44;H03H11/48
Applicant(s) Name: Mitsubishi Electric Corp. Address:
Inventor(s) Name: Tsuru Masaomi;Kawakami Kenji;Tajima Kenichi;Miyaza
Attorney & Agent: qurui
Abstract:
    A negative capacitance circuit having impedance frequency characteristic which is inverse with respect to the normal capacitance is connected to a variable capacitance element changing capacitance according to a control voltage as a tuning circuit controlling the oscillation frequency. Thus, it is possible to increase the change ratio based on the control voltage of the combined capacitance including the variable capacitance element and the negative capacitance circuit and broaden the oscillation frequency band.
Time: 10