Device and method of microwave photon channelized receiver of zero intermediate frequency

A microwave photonic and receiving device technology, applied in electromagnetic receivers, multi-carrier systems, modulated carrier systems, etc., can solve problems such as difficult implementation and difficult optical frequency combing, and achieve reduced implementation costs, reduced random noise, and achieved stability. coherent effect

Active Publication Date: 2017-03-08
XIDIAN UNIV +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, it is difficult to produce an optical frequency comb with multiple comb lines, wide intervals, and stable coherence, and this solution r

Method used

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  • Device and method of microwave photon channelized receiver of zero intermediate frequency
  • Device and method of microwave photon channelized receiver of zero intermediate frequency
  • Device and method of microwave photon channelized receiver of zero intermediate frequency

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Example Embodiment

[0034] Below in conjunction with accompanying drawing the embodiment of the present invention is described in detail: present embodiment is carried out under the premise of technical solution of the present invention, has provided detailed implementation mode and concrete operation process, but protection scope of the present invention is not limited to subordinates Example of:

[0035] figure 1 It is an implementation principle diagram of the zero-IF microwave photon channelization receiver of the present invention. The DP-QPSK modulator generates a polarization multiplexing signal formed by an optical frequency comb and positive and negative second-order sidebands, and uses OBPF to filter out the positive second-order optical sidebands and the optical frequency comb. The positive second-order sideband is used as the optical carrier for modulating the broadband signal, so that the lower sideband modulated by the broadband RF signal falls in the exact center of the optical fr...

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Abstract

The invention discloses a device and method of a microwave photon channelized receiver of zero intermediate frequency. As shown in the drawings, the device comprises a laser diode (LD), two local oscillator signals (LO1, LO2), a DP-QPSK modulator, an optical band-pass filter (OBPF), a single polarization modulator (MZM), a splitter, a narrowband OBPF group, a polarization controller (PC), a polarization beam splitter (PBS), a balance detector (BPD) and a multi-channel ADC. The DP-QPSK modulator generates polarization multiplexing signals of an optical frequency comb and positive and negative second-order sidebands, a radio frequency (RF) signal modulates the positive and negative second-order sidebands, a generated lower sideband is within a spectral line of the optical frequency comb, and the narrowband OBPF group performs balance detection after channel division and performs demodulation to obtain IQ data. DC bias and even distortion are suppressed by the balance detection, and the IQ amplitude and the phase balance can be finely corrected by optical power and a polarization state.

Description

technical field [0001] The invention relates to the technical fields of optical communication and microwave technology, and mainly relates to realizing zero-IF channelized reception of broadband microwave signals by using photonics technology. Background technique [0002] In modern electronic warfare and radar systems, the microwave signal received by the receiver has a wide bandwidth, a variety of types, and various forms, and the frequency coverage is gradually increasing. This requires the receiver to have a large instantaneous receiving bandwidth, be able to process multi-frequency and multi-form signals at the same time, and have the characteristics of high resolution and high sensitivity. However, the sampling rate and bandwidth of existing analog-to-digital converters (ADCs) are limited, and it is impossible to realize the simultaneous processing of ultra-large bandwidth signals. The channelized receiver can divide the received broadband signal into multiple sub-ban...

Claims

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Application Information

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IPC IPC(8): H04B10/61H04B10/69H04L27/36
CPCH04B10/613H04B10/6162H04B10/697H04L27/364
Inventor 高永胜文爱军李晓艳陈玮谭庆贵蒋炜
Owner XIDIAN UNIV
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