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Journal Article Capacitively Coupled Microstrip Comb-Line Array Antennas for Millimeter-Wave Applications
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Authors
Jae-Ho Lee, Jong Min Lee, Keum Cheol Hwang, Dong-Wook Seo, DongSeung Shin, Cheolhyo Lee
Issue Date
2020-08
Citation
IEEE Antennas and Wireless Propagation Letters, v.19, no.8, pp.1336-1339
ISSN
1536-1225
Publisher
IEEE
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1109/LAWP.2020.3001945
Abstract
This letter proposes a novel capacitively coupled microstrip comb-line (CCMCA) array antenna for millimeter-wave band applications. The proposed antenna has the advantages of low profile, low cost, and ease of fabrication for the millimeter-wave band. By adjusting the gaps between the radiating strips and feeding line, an antenna with low sidelobe level can easily be designed. To verify the suitability of the proposed antenna for millimeter-wave applications, two arrays (1 × 18 and 4 × 18) were designed and developed at the design frequency of 79 GHz. The measured results show good agreement with the simulated ones in terms of reflection characteristics and radiation patterns. In addition, the CCMCA antenna has stable beam direction even with frequency change, compared to a conventional series-fed microstrip rectangular patch array antenna.
KSP Keywords
79 GHz, Frequency change, Line array, Low Sidelobe Level, Low-cost, Millimeter wave band, Millimeter-wave applications, Radiation Pattern, Reflection characteristics, capacitively coupled, feeding line