作者：王益, 郭晓东, 张翠翠, 王建忠, 何斌

作者单位：中国工程物理研究院计量测试中心, 四川 绵阳 621900

关键词：X波段;相位测量;鉴相器;脉冲

摘要：

为满足高功率微波技术对信号相位差测量的应用需求，设计一种微波脉冲鉴相器，实现X波段脉冲信号相位差的准确测量。鉴相器基于I/Q解调原理，采用无需外加电源供电的双平衡电路结构，以微带电路的形式设计同相功分器和分支线电桥，结合贴片式混频器将两路待测信号进行正交混频，得到与待测相位差相关的电脉冲。电路设计中采用宽带电路结构，扩展使用带宽；结合全电磁仿真对各信号传输通路的相位一致性进行分析计算，避免电路出现初相误差；采用低通滤波器滤除高次谐波干扰，提高鉴相准确度，最后制作实物样机并进行性能测试。测试结果表明，该鉴相器能够实现百纳秒级微波脉冲信号的相位测量，动态范围达到10 dB，最大承受功率22 dBm，测量误差＜5。

Design and implementation of X-band HPM pulsed phase discriminator

WANG Yi, GUO Xiaodong, ZHANG Cuicui, WANG Jianzhong, HE Bin

Metrology and Testing Center, China Academy of Engineering Physics, Mianyang 621900, China

Abstract: To meet the requirements of signal phase difference measurement with high-power microwave technology, a microwave pulsed phase discriminator was designed for the accurate measurement of phase difference for the X-band pulsed signal. Based on I/Q demodulation method, the phase discriminator applied a double-balanced circuit structure that didn't require external power supply, designed a same-phase power splitter and branch bridge using the microstrip line and mixes the signal under test orthogonally in chip mixer to get electrical signals related to the phase difference. In circuit design, a broadband circuit structure was adopted to extend the bandwidth. The phase consistency of each signal transmission path was analyzed and calculated using the electromagnetic simulation software, avoiding the initial phase error of the circuit. The high order harmonic was restrained using a low-pass filter and the accuracy of phase discrimination was improved. Finally, a prototype was made and the performance was tested. The test results show that the phase discriminator can realize the phase measurement of hundred ns microwave pulse signal with the dynamic range of 10 dB, the maximum power of 22 dBm and the measurement error of less than 5°.

Keywords: X-band;phase measurement;phase discriminator;pulsed signal

2017, 43(6): 134-139  收稿日期: 2016-09-23;收到修改稿日期: 2016-11-15

基金项目: 

作者简介: 王益(1986-),男,四川绵阳市人,工程师,硕士,主要从事微波计量与测试技术研究。

参考文献

[1] 张嘉焱. 高功率微波空间功率合成的初步研究[D]. 长沙:国防科学技术大学, 2006.
[2] 赵荣, 侯德亭, 郭杰, 等. 高功率微波空间功率合成方法研究[J]. 信息工程大学学报, 2007, 8(4):443-445.
[3] 戈弋, 黄华, 王建忠, 等. 高功率微波脉冲的相位测量方法初探[J]. 微波学报, 2014(6):494-497.
[4] BENFORD J, SWEGLE J A, SCHAMILOGLU E. High power microwaves[J]. Plasma Science IEEE Transactions, 2016, 36(3):569-581.
[5] BARKER R J, SCHAMILOGLU E. High-power microwave sources and technologies[M]. Wiley-IEEE Press, 2001:475-489.
[6] 王益, 张翠翠, 王建忠. 激励功率对高功率微波相位测量通道相位特性影响实验研究[J]. 宇航计测技术, 2014(1):7-10.
[7] 方进勇, 张治强, 黄文华, 等. 常用微波衰减器脉冲功率容量测试[J]. 强激光与粒子束, 2010, 22(11):2663-2668.
[8] 章勇华, 杨志强, 李平, 等. 同轴电缆头和转接头HPM击穿现象初步分析[J]. 强激光与粒子束, 2005, 17(2):233-236.
[9] 杨振萍, 边清泉. 相对论速调管放大器中微波的相位抖动研究[J]. 物理学报, 2009, 58(9):6141-6145.
[10] 黄华, 郭焱华, 金晓, 等. 相对论速调管放大器的相位特性研究[J]. 物理学报, 2011, 60(3):733-736.
[11] 黄华, 李正红, 郭焱华. 相对论速调管放大器的相位特性分析[J]. 高功率微波技术, 2009, 17(1):21-28.
[12] 郭焱华, 黄华, 罗雄, 等. S波段相对论速调管放大器的相位测量[J]. 强激光与粒子束, 2009, 60(5):733-736.
[13] 蔡文新, 潘健. 双平衡式微波鉴相器的模拟研究与电路实现[J]. 大众科技, 2009(9):37-38.
[14] 魏一平, 邢小明. X波段鉴相器的仿真与实现[C]∥全国微波毫米波会议.北京:电子工业出版社, 2007:1026-1029.
[15] 黄从朝, 黄庆安, 廖小平. 微波鉴相器的模拟研究[J]. 电子器件, 2007, 30(1):72-76.
[16] VEYRES C, FOUAD C, HANNA. Extension of the application of conformal mapping techniques to coplanar lines with finite dimensions[J]. International Journal of Electronics, 1980, 48(1):47-56.
[17] GOPINATH A. Losses in coplanar waveguides[J]. Microwave Theory & Techniques IEEE Transactions, 1982, 30(7):1101-1104.