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RSS FeedsSensors, Vol. 18, Pages 1576: Broadband Circularly Polarized Slot Antenna Loaded by a Multiple-Circular-Sector Patch (Sensors)

 
 

21 may 2018 06:01:44

 
Sensors, Vol. 18, Pages 1576: Broadband Circularly Polarized Slot Antenna Loaded by a Multiple-Circular-Sector Patch (Sensors)
 


In this paper, a microstrip-fed broadband circularly polarized (CP) slot antenna is presented. CP operation can be attained simply by embedding an S-shaped strip. By loading with a multiple-circular-sector patch, which consists of 12 circular-sector patches with identical central angles of 30° and different radii, the 3 dB axial ratio (AR) bandwidth is significantly broadened. To validate the performance of the proposed antenna, an antenna prototype is fabricated and tested. The fabricated antenna is 54 mm × 54 mm × 0.8 mm in size. The measured -10 dB reflection and 3 dB AR bandwidths are 81.06% (1.68-3.97 GHz) and 70.55% (1.89-3.95 GHz), respectively. Within the 3 dB AR bandwidth, the measured peak gain is 3.81 dBic. Reasonable agreement is also obtained between the measured and simulated results.


 
62 viewsCategory: Chemistry, Physics
 
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