Microwave low-waveband ultra-minitype auto-gain control heterodyne type acceptance die set

Abstract

The invention provides a microwave low waveband ultra-micro automatic gain control heterodyne receiving module. A circuit is formed in the mode that radio frequency signal inputs a balanced amplifier, a matching type electrically controlled attenuator, a microstrip bandpass filter, a balanced amplifier and a singly-balanced mixer which are orderly connected, and the single-balanced mixer outputs intermediate frequency signal. The module has the advantages of small volume, good circuit consistency, compact structure of the whole circuit and high integration level, and the module is only one-tenth of the prior product in size, thereby facilitating the micromation of the whole receiver; due to the adoption of the matching type circuits such as the balanced circuit, the circuit has stable performance; due to the adoption of the matching type electrically controlled attenuator, the circuit has good standing wave property; and because the attenuation of the electrically controlled attenuator is controlled by an intermediate frequency output level of the mixer, the automatic gain control of the heterodyne receiver is realized.

Description

Technical field: [0001] The invention relates to a receiving component for a wireless communication system, in particular to a microwave low-band ultra-miniature automatic gain control (AGC) heterodyne receiving module. Background technique; [0002] The receiver is located at the forefront of the wireless communication system, and its characteristics directly affect the quality of the communication. It is the most important component in the wireless communication system. Its miniaturization greatly improves the sensitivity of the receiver. Existing RF AGC receiving components generally include amplifier circuits, ESC attenuation circuits, and frequency mixing circuits. These circuits form independent components and are cascaded to form AGC receiving components, resulting in heavy debugging workload, large volume, and large material consumption. The processing technology is complicated, which is not conducive to the miniaturization of the whole receiver. content of the inv...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing radio frequency AGC receiving components and provide a miniaturized microwave low-band ultra-miniature automatic gain control heterodyne receiving module with low noise, high gain and high linearity

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