Down-conversion module with ultra-wide and large instantaneous bandwidth and frequency conversion method thereof

Abstract

The present invention discloses a down-conversion module with ultra-wide and large instantaneous bandwidth and a frequency conversion method thereof. The circuit structure of the down-conversion module with ultra-wide and large instantaneous bandwidth comprises a low-frequency stage double conversion branch, a high-frequency stage double conversion branch, a single-pole double-throw switch S1, and an intermediate-frequency amplification branch. The low-frequency stage double conversion branch and the high-frequency stage double conversion branch are symmetrical structures; one end of the low-frequency stage double conversion branch and one end of the high-frequency stage double conversion branch are configured to receive radio-frequency signals, and the other end of the low-frequency stage double conversion branch and the other end of the high-frequency stage double conversion branch are configured to connect with the single-pole double-throw switch S1; and the single-pole double-throw switch S1 is configured to select one of the low-frequency stage double conversion branch and the high-frequency stage double conversion branch to connect with the intermediate-frequency amplification branch. The down-conversion module with ultra-wide and large instantaneous bandwidth has the advantages of high integration density, light weight, small size, low cost, high reliability, good manufacturability and the like. The present invention further discloses a frequency conversion method of a down-conversion module with ultra-wide and large instantaneous bandwidth.

Description

technical field [0001] The invention relates to a frequency conversion module and a frequency conversion method thereof, in particular to an ultra-wideband large instantaneous bandwidth down-conversion module and an ultra-wideband large instantaneous bandwidth down-conversion method of the ultra-wideband large instantaneous bandwidth down-conversion module. Background technique [0002] With the development of electronic information technology, the signal frequency band is getting wider and wider. As the front end of equipment for obtaining information, wideband receivers are increasingly in demand. At the same time, in order to simplify the system design, it is hoped to carry out unified intermediate frequency digital signal processing for signals in each frequency band. The demand for wideband receivers is also very strong, and its technical indicators and environmental adaptability requirements are also getting higher and higher. It can be said that the performance of the...

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Problems solved by technology

Due to the large number of units, phased array radar has very high requirements on the integration, volume, and weight of a single channel. If a frequency conversion channel composed of traditional surface-mounted devices is used, the parasitic effect will be large, and the indicators cannot be guaranteed, and it cannot meet high integration, Requirements for light weight and small size

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