NDLI: Advances in Scanning Reflectarray Antennas Based on Ferroelectric Thin-Film Phase Shifters for Deep-Space Communications

Content Provider	IEEE Xplore Digital Library
Author	Romanofsky, R.R.
Copyright Year	1963
Abstract	Though there are a few examples of scanning phased array antennas that have flown successfully in space, the quest for ldquolow costrdquo high-efficiency large-aperture microwave phased arrays continues. Fixed and mobile applications that may be part of a heterogeneous exploration communication architecture will benefit from the agile (rapid) beam steering and graceful degradation afforded by phased array antennas. The reflectarray promises greater efficiency and economy compared to directly radiating varieties. Implementing a practical scanning version has proven elusive. The ferroelectric reflectarray, under development and described herein, involves phase shifters based on coupled microstrip patterned on films that were laser ablated onto substrates. These devices outperform their semiconductor counterparts from X- through and K-band frequencies. There are special issues associated with the implementation of a scanning reflectarray antenna, especially one realized with thin-film ferroelectric phase shifters. This paper will discuss these issues, which include relevance of phase shifter loss; modulo 2 effects and phase shifter transient effects on bit error rate; scattering from the ground plane; presentation of a novel hybrid ferroelectric-semiconductor phase shifter; and the effect of mild radiation exposure on phase shifter performance.
Sponsorship	IEEE Publication
Starting Page	1968
Ending Page	1975
Page Count	8
File Size	711810
File Format	PDF
ISSN	00189219
Volume Number	95
Issue Number	10
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-10-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Reflector antennas Ferroelectric materials Transistors Phase shifters Phased arrays Microwave antenna arrays Mobile communication Microwave communication Semiconductor laser arrays Beam steering reflectarray antenna Ferroelectric phase shifters intersymbol interference radiation effects
Content Type	Text
Resource Type	Article
Subject	Computer Science Electrical and Electronic Engineering

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