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http://dx.doi.org/10.5515/KJKIEES.2008.19.10.1166

Design of a 2~18 GHz Wideband Cavity-Backed Spiral Antenna  

Cho, Jung-Rae (Department of Radio Science & Engineering, Chungnam National University)
Park, Jin-Oh (LIG NEX1 Co.)
You, Byung-Sek (LIG NEX1 Co.)
Jeong, Un-Seob (Agency for Defense Development)
Chung, Woo-Sung (Agency for Defense Development)
Park, Dong-Chul (Department of Radio Science & Engineering, Chungnam National University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.19, no.10, 2008 , pp. 1166-1174 More about this Journal
Abstract
In this paper, design of a $2{\sim}18$ GHz wideband cavity-backed spiral antenna is investigated. Firstly, an arm pattern and a backing cavity of a cavity-backed spiral antenna are designed based on the design theory of an Archimedean spiral antenna as well as by using CST's MWS. VSWR, axial ratio, and HPBW(Half Power Beam Width) characteristics are considered in the simulation. Secondly, a Marchand coaxial balun is designed to meet the required VSWR within the frequency band of operation. Finally, the validity of these approaches is verified by comparing the simulated results with measured ones.
Keywords
Wideband Cavity-Backed Spiral Antenna; Marchand Balun;
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