| 摘要 |
FIELD: radio engineering, possible use as panoramic super-heterodyne receiver with frequency analysis function, operating under conditions of receipt in broad dynamic and frequency ranges. ^ SUBSTANCE: super heterodyne receiver and frequency meter contains amplifier of input signals, to output of which two receiving channels are connected, each one of which consists of serially connected mixer, band filter of intermediate frequency, amplifier of intermediate frequency and meter of intermediate frequency, two heterodynes on basis of digital frequency synthesizer, circuit for controlling frequency of heterodynes, code comparison circuit and solving device. Utilization of heterodynes with fixed shift by frequency during their readjustment, selection of relation between bands of intermediate frequency filters allows to stop using specialized channel for preventing receipt at mirror frequency and to perform receipt and measurement of signal parameters simultaneously in both main and mirror frequency bands. ^ EFFECT: increased band of simultaneous receipt and measurement of signal parameters with given band of intermediate frequency route. ^ 4 dwg |
