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A new SAW device substrate for synthetic aperture radar
Author(s) -
Lu Y. H.,
Yeo T. S.,
Kooi P. S.,
Pan J. C.,
Zhang C. B.
Publication year - 2000
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/(sici)1098-2760(20000220)24:4<263::aid-mop16>3.0.co;2-f
Subject(s) - substrate (aquarium) , synthetic aperture radar , pulse compression , microwave , radar , acoustics , insertion loss , surface acoustic wave , aperture (computer memory) , electronic engineering , materials science , engineering , optics , computer science , electrical engineering , telecommunications , physics , geology , oceanography , computer vision
This paper presents an outline of a coherent pulse compression–expansion system constructed for an airborne synthetic aperture radar (SAR). The design concept, system performance, and experimental results are presented. Notably, a pair of conjugate surface acoustic wave (SAW) dispersive delay lines is implemented on a Bi 12 GeO 20 substrate for the first time. The Bi 12 GeO 20 substrate is chosen as a good tradeoff between insertion loss and temperature stability. Furthermore, its low acoustic velocity provides the added advantage of being able to use a shorter line to achieve the same time delay. ©2000 John Wiley & Sons, Inc. Microwave Opt Technol Lett 24: 263–267, 2000.