VOLTAGE-CONTROLLED OSCILLATOR Russian patent published in 2005 - IPC

FIELD: radio engineering.

SUBSTANCE: proposed device that can be used in small-size transceiving equipment of broadband communication systems as voltage-controlled frequency-setting oscillator or frequency synthesizer has two varicaps incorporated in its oscillatory circuit and microstrip line section connected in-between with capacitor connected in parallel with this section. Mentioned combination of microstrip line section and capacitor forms frequency-dependent (inductive) reactance that changes transconductance and character of characteristic slope (polarity) depending on capacitor rating and point of its connection in line.

EFFECT: enhanced linearity of oscillator tuning (modulation) characteristic in broad frequency band.

1 cl, 18 dwg