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Byun, Gangil
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Design of small CRPA arrays with circular microstrip loops for electromagnetically coupled feed

Author(s)
Hur J.Byun, GangilChoo H.
Issued Date
2018-04
DOI
10.26866/jees.2018.18.2.129
URI
https://scholarworks.unist.ac.kr/handle/201301/25117
Fulltext
http://jees.kr/journal/view.php?doi=10.26866/jees.2018.18.2.129
Citation
JOURNAL OF ELECTROMAGNETIC ENGINEERING AND SCIENCE, v.18, no.2, pp.129 - 135
Abstract
This paper proposes a design of small controlled reception pattern antenna (CRPA) arrays using circular microstrip loops with frequencyinsensitive characteristics. The proposed array consists of seven identical upper and lower circular loops that are electromagnetically coupled, which results in a frequency-insensitive behavior. To demonstrate the feasibility of the proposed feeding mechanism, the proposed array is fabricated, and its antenna characteristics are measured in a full-anechoic chamber. The operating principle of the proposed feeding mechanism is then interpreted using an equivalent circuit model, and the effectiveness of the circular loop shape is demonstrated by calculating near electromagnetic fields in proximity to the radiator. The results confirm that the proposed feeding mechanism is suitable to have frequency- insensitive behavior and induces strong electric and magnetic field strengths for higher radiation gain in extremely small antenna arrays.
Publisher
한국전자파학회
ISSN
2234-8409
Keyword (Author)
Controlled reception pattern antennaElectromagnetically coupled feedFrequency-insensitive characteristicMicrostrip loop antenna

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