MIXER Russian patent published in 1997 - IPC

FIELD: radio engineering, SHF equipment. SUBSTANCE: given mixer has microstrip filters of input signal, heterodyne and intermediate frequency made on microstrip electromagnetically coupled resonators. Output resonator of filter of input signal, output resonator of filter of heterodyne and input resonator of filter of intermediate frequency are manufactured in the form of one microstrip resonator which resonance frequencies are equal to frequency of input signal, frequency of heterodyne and intermediate frequency. Strip conductor of resonator is grounded through varactor diode. Proposed design of mixer makes it possible to diminish number of elements of mixer thanks to their more efficient usage and to reduce dimensions of mixer. Additional reduction of dimensions of mixer is obtained thanks to arrangement of input of input resonator of filter of input signal in point of voltage unit on frequency of heterodyne, of input of input resonator of filter of heterodyne in point of voltage unit on frequency of input signal, of output of output resonator of filter of intermediate frequency in point of voltage unit on frequency of heterodyne. EFFECT: diminished number of elements of mixer, reduced dimensions of mixer. 4 cl, 3 dwg