Simple Approach to Measure Angle of Arrival of a Microwave Signal

被引：39
|
作者：
Chen, Hao [1 ]
Chan, Erwin H. W. [1 ]
机构：
[1] Charles Darwin Univ, Coll Engn IT & Environm, Darwin, NT 0909, Australia
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2019年 / 31卷 / 22期
关键词：
Angle of arrival; microwave photonics; time delay; dual-drive Mach Zehnder modulator; PHOTONIC APPROACH;
D O I：
10.1109/LPT.2019.2947680
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A new photonics-based microwave angle of arrival (AOA) measurement system is presented. It is based on a single-laser, single dual-drive Mach Zehnder modulator (DDMZM) and single-photodetector structure. The AOA of a microwave signal can be determined by simply measuring the system output DC voltage. The proposed system is suitable for determining the AOA of a microwave signal with a single frequency or a band of frequencies, and has a wide AOA measurement range. Experimental results are presented that demonstrate an AOA measurement range of 0 degrees to 76.8 degrees and 12.6 degrees to 90 degrees without and with introducing a time delay to one of the DDMZM input RF ports respectively, and measurement errors of less than 2 degrees. Results also demonstrate an AOA measurement for a pseudorandom binary sequence signal upconverted into a microwave frequency.
引用
收藏
页码：1795 / 1798
页数：4
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