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http://dx.doi.org/10.3807/KJOP.2002.13.4.289

Optical true time-delays for phased-array antennas using 2×2 MEMS switches and fiber delay lin  

Lee, Gab-Yong (School of Electronic Engineering, Soongsil University)
Choi, Yeon-Bong (School of Electronic Engineering, Soongsil University)
Shin, Jong-Dug (School of Electronic Engineering, Soongsil University)
Kim, Boo-Gyoun (School of Electronic Engineering, Soongsil University)
Publication Information
Korean Journal of Optics and Photonics / v.13, no.4, 2002 , pp. 289-294 More about this Journal
Abstract
We propose optical true time-delays (TTDs) for phased-array antennas (PAAs) composed of 2${\times}$2 MEMS switches and fiber delay lines, and implement a TTD which shows a maximum scan angle of $120^{o}$ with $30^{o}$ resolution. Since this structure uses only one fixed wavelength laser diode, it provides several advantages such as easy control, high speed operation, and low cost compared with those of the optical TTDs using tunable laser sources. We design a four element linear PAA using the proposed TTDs at 10 ㎓. Simulation results show that the maximum gain is 11.6 dB at the radiation angle $0^{o}$, 11.2 dB at $\pm$$30^{o}$, and 10.6 dB at $\pm$$60^{o}$.
Keywords
phased-array antenna; true time-delay; optical MEMS switch;
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Times Cited By KSCI : 1  (Citation Analysis)
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