Mnogochasovye the oscillator
FIELD: power engineering.
SUBSTANCE: wideband polyharmonic generator comprises an active element, an outlet circuit, which matches an active element with a load, and a wideband inlet circuit, at the same time parameters of the outlet circuit in the working band of frequencies from the set ratios.
EFFECT: increased efficiency in working frequency band.
SUBSTANCE: solid-state HF shock-excited generator includes primary switch, primary power accumulator, pulse transformer with saturable core, circuit capacitor, pulse transformer with its primary winding forming parallel oscillatory circuit together with circuit capacitor, and switch element is formed by diode closed at the moment of power supply and opening in the moment of oscillation start after transformer core saturation. Reverse voltage and current through diode, together with its frequency characteristics, define power and maximum frequency of generated oscillation, respectively.
EFFECT: powerful pulse of damped high-frequency oscillation.
FIELD: radio engineering, communication.
SUBSTANCE: invention relates to radio engineering and can be used in radio transmitters. The high-frequency key power amplifier comprises a key amplifier stage, a filter and a transmission line, the length and wave impedance of which are defined from given relationships.
EFFECT: increasing upper operating frequency while maintaining high efficiency.
FIELD: radio engineering and communications.
SUBSTANCE: invention can be used in radio transmitting devices. Polyharmonic generator contains active element with required angle of cutoff, output circuit, which matches active element to load, and broadband input circuit, wherein parameters of output circuit between active element output electrode and common bus provide value of reactive resistances on 2nd harmonic, determined by given relationships.
EFFECT: obtaining high efficiency in relative working frequency band, achieved by 30 %.
1 cl, 1 dwg