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Design of a corner-truncated square-spiral microstrip patch antenna in the 5-GHz band

✍ Scribed by Gye-Taek Jeong; Woo-Soo Kim; Kyung-Sup Kwak

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
233 KB
Volume
48
Category
Article
ISSN
0895-2477

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✦ Synopsis

In this paper, the characteristics of the square-spiral antenna for broadband impedance bandwidth are investigated in the 5-GHz band. The design is based on the 1.25-turn square spiral antenna in a finite-sized ground with coaxial SMA feeding. Likewise, the corner of the proposed antenna is truncated so as to ensure smooth current flow. As a result, sufficient impedance bandwidth is obtained (VSWR Ͻ 2). The corner-truncated square-spiral microstrip patch antenna is able to achieve an impedance bandwidth of about 1.2 GHz or 20.9%, given a VSWR of less than 2. The radiation patterns are broad across the pass band, with gain measuring 2.8 -7.3 dBi.

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