FIELD: radio engineering, applicable in small-sized transcribing equipment of the wideband communication system as a voltage-controlled master oscillator, frequency synthesizer.
SUBSTANCE: an open-circuit section of a micro strip line having a length of a wave quarter with a capacitor parallel-connected with it is serial-connected to the varicap included in the oscillator oscillatory circuit. The mentioned combination of the microstrip line section and capacitor forms a frequency-depended (inductive) reactance, whose value and nature of variation within the frequency band depended on the value of the capacitor capacitance and the point of its connection to the line.
EFFECT: enhanced linearity of the oscillator retuning (modulation characteristic) within a wide band of frequencies.
17 dwg
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