Millimeter wave multi-channel radio frequency receiving front end for Ka frequency band feed source

Abstract

The invention discloses a millimeter wave multi-channel radio frequency receiving front end for a Ka frequency band feed source. The front end comprises a Ka frequency band receiving component, a local oscillator 16 branching unit, a waveguide network, an N type local oscillator input socket, a high-low frequency mixing intensive connector, a support beam, a connector, a shell, a receiving component support, a local oscillator branching unit support, a base, an adjusting cushion block and a base cover plate. The waveguide network feeds received radio frequency signals into the Ka frequency band receiving component, the Ka frequency band receiving component outputs down-conversion signals through the high-low frequency mixing intensive connector, the N type local oscillator input socket is connected with an external local oscillator source signal, the output end of the local oscillator 16 branching unit is connected with the local oscillator input end of the Ka frequency band receiving component, the adjusting cushion block is fixed on the waveguide network and used for adjusting the heights of the Ka frequency band receiving component and the waveguide network, the local oscillator 16 branching unit is fixed on the connector through the local oscillator branching unit support, the connector is mounted on the support beam, and the shell and the base cover plate are mounted on the base.

Description

technical field [0001] The invention belongs to the technical field of microwave measurement and control, and relates to a millimeter-wave multi-channel radio frequency receiving front end used for a Ka frequency band feed source. Background technique [0002] Millimeter waves have been widely used in radar, electronic countermeasures, and millimeter wave communications. In some applications, it is the only feasible solution. With the development of the domestic measurement and control system, the measurement and control system has also risen from the traditional S frequency band to the Ka frequency band. In these systems, the RF receiving front end is located at the forefront of the system and is an important part of the system. Its performance index directly affects the quality factor and measurement and control accuracy of the measurement and control system. [0003] The main function of the millimeter-wave multi-channel RF receiving front-end of the Ka-band feed is to r...

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Problems solved by technology

[0005] The purpose of the technical problem solving of the present invention is to provide a millimeter-wave multi-channel radio frequency receiving front-end for the Ka-band feed in view of the deficiencies of the prior art. The present invention solves the problem of miniaturization and high reliability of the millimeter-wave multi-channel receiving front-end , the problem of complex network cable layout, and at the same time, the optimization of the waveguide network enables the miniaturization of the entire receiving front-end

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