A Ku-band high-sensitivity receiving circuit

Abstract

The invention discloses a Ku-band high-sensitivity receiving circuit which comprises a radio frequency amplification circuit, an radio frequency filter circuit, a first mixing circuit, a first local oscillation circuit, a first intermediate frequency filter circuit, a first intermediate frequency amplification circuit, a second mixing circuit, a second local oscillation circuit, a second intermediate frequency switch filter circuit and a second intermediate frequency amplification circuit. The radio frequency amplification circuit is successively connected in series with the radio frequency filter circuit, the first mixing circuit, the first intermediate frequency filter circuit, the first intermediate frequency amplification circuit, the second mixing circuit, the second intermediate frequency switch filter circuit and the second intermediate frequency amplification circuit. The first mixing circuit is connected with first local oscillation circuit. The second mixing circuit is connected with the second mixing circuit. According to the invention, the structural size of the circuit is greatly reduced; the power consumption of the circuit is reduced; the weight of the circuit is reduced; and the circuit has the advantages of stable performance and high index consistency, and is widely applicable to a communication system, a navigation system, a radar and the microwave communication system of a space electronic technology.

Description

technical field [0001] The invention relates to the field of microwave communication electronics technology, in particular to a Ku-band high-sensitivity receiving circuit applied in the microwave communication technology field, and a miniaturized design technology of the Ku-band high-sensitivity receiving circuit based on micro-assembly technology. Background technique [0002] As the low-end spectrum resources are becoming increasingly exhausted with the rapid development of communication technology, and the demand for high-capacity communication technology is becoming increasingly urgent, in order to adapt to this development trend, microwave communication technology is showing a stronger development momentum. [0003] At present, Ku-band receiving circuits based on discrete components and component cascading technology generally have the defects of large volume, heavy weight, and high power consumption. Contents of the invention [0004] In view of the above analysis, t...

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Problems solved by technology

[0003] At present, Ku-band receiving circuits based on discrete components and component cascading technology generally have the defects of large volume, heavy weight, and high power consumption.

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