A Wide-Angle E-Plane Scanning Linear Array Antenna With Wide Beam Elements

In order to improve the wide-angle scanning performance of the phased array antennas, a wide-beam microstrip antenna with metal walls is proposed in this letter. The beamwidth of the antenna is broadened by the horizontal current on the radiating patch and the vertical current on the metal walls. Th...

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Bibliographic Details
Published inIEEE antennas and wireless propagation letters Vol. 16; pp. 2923 - 2926
Main Authors Yang, Guangwei, Li, Jianying, Zhou, Shi Gang, Qi, Yangxiao
Format Journal Article
LanguageEnglish
Published New York IEEE 01.01.2017
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Antenna arrays
Antenna radiation patterns
Linear antenna arrays
Metals
Microstrip antenna arrays
Microstrip antennas
phased array antennas
Phased arrays
Planes
Scanning
scanning antennas
Variations
wide beam
wide-angle scanning
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Summary:In order to improve the wide-angle scanning performance of the phased array antennas, a wide-beam microstrip antenna with metal walls is proposed in this letter. The beamwidth of the antenna is broadened by the horizontal current on the radiating patch and the vertical current on the metal walls. The half-power beamwidth of the E- and H-planes is 221° and 168° at 4.0 GHz. Furthermore, the wide-beam antenna element is employed in a nine-element E-plane linear array antenna. The main beam of the E-plane scanning linear array antenna can scan from -70° to +70° in the frequency band from 3.7 to 4.3 GHz with a gain fluctuation less than 2.7 dB and variation in maximum sidelobe level less than -5.8 dB. The E-plane scanning linear array antenna with nine elements is fabricated and tested. The measured results achieve a good agreement with the simulated results.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2017.2752713