Oscillators – With frequency adjusting means – With voltage sensitive capacitor
Patent
1997-07-28
1998-12-22
Mis, David
Oscillators
With frequency adjusting means
With voltage sensitive capacitor
331 96, 331117D, 331175, H03B 518
Patent
active
058523880
ABSTRACT:
A voltage controlled oscillator including a resonator which generates an oscillation signal, a frequency of which is in response to a control signal, and an amplifier which amplifies the oscillation signal. Also included is a frequency adjusting mechanism, as well as a voltage control sensitivity mechanism. In one example, the resonator includes an input terminal to which the control signal is applied, a variable capacitance diode and a main inductor. The oscillation frequency adjusting mechanism includes a first variable capacitor, arranged in parallel with the main inductor of the resonator. In addition, the voltage control sensitivity adjusting mechanism includes a second variable capacitor arranged between the input terminal and the amplifying mechanism, and also arranged between a hot terminal of the variable capacitance diode and a hot terminal of the main inductor.
REFERENCES:
patent: 4375621 (1983-03-01), Schneiter et al.
patent: 4450416 (1984-05-01), Mears
patent: 4990866 (1991-02-01), Martheli
patent: 5083098 (1992-01-01), Alidio et al.
patent: 5532651 (1996-07-01), Jager et al.
Fukumitsu Yoshiaki
Hattori Yasuyuki
Ishizuka Takehiko
Katsumata Masashi
Nagai Kenta
Mis David
TDK Corporation
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