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Optical true time-delay feeder for X-band phased array antennas composed of 2 x 2 optical MEMS switches and fiber delay lines
- Issue Date
- May-2004
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- beam forming networks; optical microelectromechanical system (MEMS); phased array antennas (PAAs); true time-delay (TTD)
- Citation
- IEEE PHOTONICS TECHNOLOGY LETTERS, v.16, no.5, pp.1364 - 1366
- Journal Title
- IEEE PHOTONICS TECHNOLOGY LETTERS
- Volume
- 16
- Number
- 5
- Start Page
- 1364
- End Page
- 1366
- ISSN
- 1041-1135
- Abstract
- We proposed an optical true time-delay (TTD) feeder for X-band linear phased array antennas (PAAs), which possesses high-speed beam scan capability by selecting different lengths of fiber delay lines with fast 2 x 2 optical microelectromechanical system switches. For proof of concept, a 3-bit optical TTD has been built for a 10-GHz linear PAA composed of two antenna elements. Experimental results show that the maximum time-delay error is less than 0.2 ps, corresponding to a radiation angle error of less than 0.84degrees, which is within the equipment resolution. We have also designed a 10-GHz linear PAA composed of eight microstrip patch antenna elements driven by the proposed TTD. The radiation patterns of this PAA have been obtained by simulation.
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Related Researcher
- Kim, Boo Gyoun
- Department of Electronic Engineering