79-GHz Wide-Beam Microstrip Patch Antenna and Antenna Array for Millimeter-Wave Applications
| Autor: | Yi-Chyun Chiang, Eric S. Li, Ting-Wei Kuo, Huayan Jin, Guan-Ren Su, Kuo-Sheng Chin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
General Computer Science
02 engineering and technology Radiation pattern Beamwidth Antenna array Optics 0202 electrical engineering electronic engineering information engineering General Materials Science Physics Plane (geometry) business.industry 020208 electrical & electronic engineering General Engineering millimeter-wave antenna 020206 networking & telecommunications Ranging Automotive radar antenna substrate integrated waveguide Amplitude Parasitic element Extremely high frequency parasitic element wide-beam antenna beamwidth lcsh:Electrical engineering. Electronics. Nuclear engineering business lcsh:TK1-9971 |
| Zdroj: | IEEE Access, Vol 8, Pp 200823-200833 (2020) |
| ISSN: | 2169-3536 |
| Popis: | A wide-beam microstrip patch antenna and antenna array ranging from 77 to 81 GHz are presented in this study for millimeter-wave applications. A substrate-integrated-waveguide probe-fed patch was developed. For beamwidth enhancement, two I-shaped parasitic elements were placed next to the main patch to establish a three-element subarray. The current directions of the parasitic elements were opposite to that of the main patch, leading to beamwidth enhancement in the $E$ -plane radiation pattern. The proposed I-shaped parasitic element has the advantages of coplanar structure, compact size, and easy adjustment of the induced current. An array-factor method was employed to analyze the effect of the parasitic elements on the beamwidth of the main patch. Three amplitude distributions of the subarray were compared. The distribution of −0.1:1:−0.1 was proved to present the most beamwidth, which can be realized easily by the proposed I-shaped parasitic elements. To achieve both wide beamwidth and high gain, a $1\times8$ patch antenna array with the I-shaped parasitic elements was proposed. The measured results showed that the design can offer a gain of 10.74 dBi and a wide beamwidth of 138° at 79 GHz. |
| Databáze: | OpenAIRE |
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