Large Dynamic Range Microwave Photonic I/Q Down-Conversion System Based on PDM-DPMZM

SHI Fang-jing; FAN Yang-yu; WANG Xin-yuan; KANG Bo-chao; CHEN Bo; GAO Yong-sheng

doi:10.12263/DZXB.20210746

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Large Dynamic Range Microwave Photonic I/Q Down-Conversion System Based on PDM-DPMZM

TECHNOLOGIES ON MICROWAVE PHOTONICS | 更新时间：2025-12-08

- Large Dynamic Range Microwave Photonic I/Q Down-Conversion System Based on PDM-DPMZM
- ACTA ELECTRONICA SINICA Vol. 50, Issue 4, Pages: 782-788(2022)
- 作者机构：
  
  西北工业大学电子信息学院，陕西西安 710072
- 作者简介：
- 基金信息：
- DOI：10.12263/DZXB.20210746
  CLC： TN29;
- Received：14 June 2021，
  
  Revised：2021-12-27，
  
  Published：25 April 2022
- 稿件说明：
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史芳静,樊养余,王鑫圆等.基于PDM-DPMZM的大动态范围微波光子I/Q下变频系统[J].电子学报,2022,50(04):782-788.

SHI Fang-jing,FAN Yang-yu,WANG Xin-yuan,et al.Large Dynamic Range Microwave Photonic I/Q Down-Conversion System Based on PDM-DPMZM[J].ACTA ELECTRONICA SINICA,2022,50(04):782-788.
史芳静,樊养余,王鑫圆等.基于PDM-DPMZM的大动态范围微波光子I/Q下变频系统[J].电子学报,2022,50(04):782-788. DOI： 10.12263/DZXB.20210746.

SHI Fang-jing,FAN Yang-yu,WANG Xin-yuan,et al.Large Dynamic Range Microwave Photonic I/Q Down-Conversion System Based on PDM-DPMZM[J].ACTA ELECTRONICA SINICA,2022,50(04):782-788. DOI： 10.12263/DZXB.20210746.

摘要

针对被目前大多微波光子I/Q下变频系统忽视的非线性失真问题，提出了一种基于偏振复用双平行马赫增德尔调制器（Polarization Division Multiplexing Dual-Parallel Mach-Zehnder Modulator，PDM-DPMZM）的大动态范围微波光子I/Q下变频系统.利用PDM-DPMZM并行地调制射频、本振和镜像信号，调节调制器的直流偏置并进行驱动信号功率控制，能够实现I/Q下变频及镜像干扰抑制，同时抑制三阶交调失真.实验结果表明，所提方案最终可以实现超过44 dB的镜像抑制，系统的无杂散动态范围达到110.5 （dB·Hz

4/5

）.在5~20 GHz工作频率范围内，相位失衡和幅度失衡分别低于0.8°和0.6 dB.

Abstract

Aiming at the nonlinear distortion problem ignored by most microwave photonic I/Q down-conversion systems

a large dynamic range microwave photonic I/Q down-conversion system based on the polarization division multiplexing dual-parallel Mach-Zehnder modulator (PDM-DPMZM) is proposed. The PDM-DPMZM is used to modulate the radio frequency signal

local oscillator signal

and image signal in parallel. By adjusting the DC bias of the modulator and the powers of the drive signals

the I/Q down-conversion and image interference suppression can be realized. The third-order intermodulation distortion can be suppressed at the same time. Experimental results show that the proposed scheme can achieve an image rejection ratio of more than 44 dB. The spur-free dynamic range can reach 110.5 dB·Hz

4/5

. In the 5-20 GHz operating frequency range

the phase imbalance and amplitude imbalance are lower than 0.8° and 0.6 dB

respectively.

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Keywords

references

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