FIELD: radio equipment.
SUBSTANCE: invention relates to radio engineering and can be used in radio transmitting devices. Broadband modification of the high-frequency key power amplifier comprises a key amplifier stage, a filter and a transmission line. Length of the line and its wave resistance are determined by formulas which relate said parameters to load resistance, the output capacitance of the active element and the central operating frequency.
EFFECT: technical result is increase in operating frequency band.
1 cl, 1 dwg
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