True time-delay phased-array antenna feed system based on optical heterodyne techniques

被引：19

作者：

Xu, LG

Taylor, R

Forrest, SR

机构：

[1] Adv. Technol. Ctr. Photonics O., Department of Electrical Engineering, Princeton University, Princeton

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 1996年 / 8卷 / 01期

关键词：

D O I：

10.1109/68.475812

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：

We demonstrate a true-time delay phased-array antenna feed system based on multi-channel optical heterodyne detection techniques. The system is relatively insensitive to laser linewidth and IF frequency instabilities. We demonstrate accurate true-time delay from 0.8 to 1.5 GHz. The dynamic range for one channel is 52 dB for 1 MHz bandwidth. For a very narrow channel spacing of 13 GHz (similar to 1 Angstrom at a transmission wavelength of 1.55 mu m), the interchannel interference is negligible. Such an architecture has potential for large scale system implementations.

引用

页码：160 / 162

页数：3

共 8 条

[1]

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[2]

Freitag P. M., 1993, IEEE Microwave and Guided Wave Letters, V3, P293, DOI 10.1109/75.244857

[3]

GUGGENMOS J, 1987, OPT TECHNOL MICROW 3, V789, P70

[4]

KOEPF GA, 1984, P SOC PHOTO-OPT INST, V477, P75