A Beam-Steering Broadband Microstrip Antenna for Noncontact Vital Sign Detection

A 2.8-4.8-GHz beam-steering broadband microstrip antenna was designed, fabricated, and measured. The proposed broadband antenna can steer a beam by switching p-i-n diodes connecting stubs to a partial ground plane. Radiation pattern measurement shows expected horizontal beam steering at the sampled...

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Bibliographic Details
Published inIEEE antennas and wireless propagation letters Vol. 10; pp. 235 - 238
Main Authors Park, Zivin, Lin, Jenshan
Format Journal Article
LanguageEnglish
Published New York IEEE 2011
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Antenna measurements
Antenna radiation patterns
Beam steering
broadband antenna
Broadband antennas
Broadband communication
microstrip antenna
Microstrip antennas
p-i-n diode
radar sensor
vital sign
wireless
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Summary:A 2.8-4.8-GHz beam-steering broadband microstrip antenna was designed, fabricated, and measured. The proposed broadband antenna can steer a beam by switching p-i-n diodes connecting stubs to a partial ground plane. Radiation pattern measurement shows expected horizontal beam steering at the sampled frequencies of 3, 3.5, 4, and 4.5 GHz. Its beam steering is suitable for a vital-sign radar application and other applications where simple beam-steering patterns are needed.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2011.2126555