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http://dx.doi.org/10.5515/KJKIEES.2016.27.8.684

Non-Offset Longitudinal Shunt Slot Exited by an Asymmetry Compound Iris  

Kim, Byung-Mun (Department of IT Cooperative Systems, Gyeongbuk Provincial College)
Hong, Jae-Pyo (Department of Electronics Engineering, Kyungil University)
Cho, Young-Ki (School of Electronics Engineering, Kyungpook National University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.27, no.8, 2016 , pp. 684-692 More about this Journal
Abstract
In this paper, a non-offset longitudinal shunt slot excited by an asymmetry compound iris on the broad wall of a rectangular waveguide is presented as an element for a waveguide slot-array antenna(WSAA). By properly adjusting the iris dimension, a resonance of the slot at a desired frequency can be achieved. The proposed resonant slot has some advantageous properties, such as a wide range of normalized resonant conductance, and minimum change of phase in the waveguide at the resonance. In addition, when the slots are arrayed for a waveguide slot antenna, the unwanted cross-polarization level can be reduced because each slot is placed in a straight line. A $8{\times}1$ WSAA with -20 dB side-lobe level(SLL) is designed, fabricated, and tested experimentally. The measured results are well agreed with the simulated ones and have an SLL of -18.13 dB and a cross-polarization level of -48.85 dB at 9.41 GHz, which was improved by about 15 dB of that of the conventional longitudinal slot array antenna.
Keywords
Waveguide Slot; Longitudinal Slot; Non-Offset; Asymmetry Compound Iris; Slot Array Antenna;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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