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http://dx.doi.org/10.26866/jees.2018.18.2.129

Design of Small CRPA Arrays with Circular Microstrip Loops for Electromagnetically Coupled Feed  

Hur, Jun (Department of Electronic and Electrical Engineering, Hongik University)
Byun, Gangil (Department of Electrical and Computer Engineering, Ulsan National Institute of Science and Technology (UNIST))
Choo, Hosung (Department of Electronic and Electrical Engineering, Hongik University)
Publication Information
Journal of electromagnetic engineering and science / v.18, no.2, 2018 , pp. 129-135 More about this Journal
Abstract
This paper proposes a design of small controlled reception pattern antenna (CRPA) arrays using circular microstrip loops with frequency-insensitive 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.
Keywords
Controlled Reception Pattern Antenna; Electromagnetically Coupled Feed; Frequency-Insensitive Characteristic; Microstrip Loop Antenna;
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Times Cited By KSCI : 2  (Citation Analysis)
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