A Compact, Wideband, Two-Port Substrate-Integrated Waveguide Antenna With a Central, Double-Slotted, Metallic Plate Flanked by Two Paired of Corrugations for Radar Applications
- Authors
- Jin, Yunnan; Lee, Hojoo; Choi, Jaehoon
- Issue Date
- Nov-2018
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Compact antenna; corrugation; low profile; substrate-integrated waveguide (SIW); wideband
- Citation
- IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, v.66, no.11, pp.6376 - 6381
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
- Volume
- 66
- Number
- 11
- Start Page
- 6376
- End Page
- 6381
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/15941
- DOI
- 10.1109/TAP.2018.2863263
- ISSN
- 0018-926X
- Abstract
- This communication proposes a compact, wideband, two-port substrate-integrated waveguide (SIW) antenna with a central, double-slotted metallic plate flanked by two paired corrugations for radar applications. The proposed antenna uses a two-layer structure, with a slotted metallic plate with corrugations on the top layer and an FR-4 substrate SIW on the bottom layer. The antenna has compact dimensions of 63 mm x 54 mm (2.32 lambda(0) x 1.99 lambda(0)) with a low profile of 7 mm (0.26 lambda(0)). To understand the operating principle of the two-port SIW antenna clearly, modal analysis is performed for single-port SIW antenna. The antenna satisfies a -10 dB reflection coefficient from 10.15 to 11.58 GHz. Although the separation between the two central slots is minimized to 4 mm (0.14 lambda(0)), the isolation performance remains excellent (less than -30 dB). The gain enhancement, with a narrow beam pattern for radar applications, is realized using constructive superposition of in-phase electromagnetic energy from the two slots. In addition, because the antenna has two ports, it also has a beam scanning function from -12 degrees to + 12 degrees in its boresight direction. The experimental and simulated results from the proposed antenna are in good agreement.
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