A device and design method of an ultra-wideband receiver based on microwave photons

Abstract

The invention discloses a device and design method of an ultra-wideband receiver based on microwave photons, which connects optical control beam synthesis and optical channelization functional modules through optical transmission through optical wavelength division multiplexing technology, and realizes optical domain processing of microwave radio frequency signals Broadband reception process. In the present invention, the microwave signals of different antenna columns are modulated onto optical carriers of different wavelengths, and different delay paths are selected through optical wavelength switching to realize different beam orientations; the radio frequency signal information carrying different columns is realized through multi-wavelength optical frequency combs And direct optical transmission into the microwave photon channelization module. In the module, different wavelengths of light are distributed to different channelization units by demultiplexing, and the intermediate frequency channels of the corresponding columns are obtained through different channelization units. signals, and finally combine the beams together to achieve the goal of beamforming. The microwave photon ultra-wideband receiver device of the present invention has large real-time processing bandwidth and large dynamic range.

Description

technical field [0001] The invention belongs to the technical fields of microwave photon technology and phased array detection radar. Background technique [0002] The radar modulation methods in the modern battlefield are complex and changeable, and broadband and ultra-wideband radars are equipped with a large number of equipment, and electromagnetic signals are increasingly dense. Therefore, electronic detection radar is required to have the characteristics of large instantaneous bandwidth, high sensitivity, large dynamic range, etc., and be able to identify multiple signals arriving at the same time. In response to the above-mentioned real-time reconnaissance requirements, the current traditional electronic method of using phased array phase shifting to realize beam scanning, and combining analog channelization and digital signal processing to realize channelization is limited by factors such as bandwidth loss, leakage, and interference of electronic circuit devices. The...

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Problems solved by technology

[0005] It should be noted that the research reported so far is still focused on the realization of a single optical beamforming and optical channelization functions, and the design of the overall architecture of the UWB receiver is still limited to the following figure 1 In the processing flow shown, each function needs to undergo an electrical-to-optical conversion, and the two are connected by cables. The dynamic range of the system limits its application in actual radar systems, and it is necessary to seek an all-optical processing method

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