Design ofSIRW-Based Self-diplexing Slot Antenna withLow Cross-Polarization Level forMillimeter-Wave Applications
subject: antenna; millimeter-wave; self-diplexing; Substrate-integrated rectangular waveguide
description: This article presents a miniaturized self-diplexing slot antenna utilizing a substrate-integrated rectangular waveguide (SIRW) for millimeter-wave applications. The proposed antenna is built using a rectangular cavity, a slot on the top conductor, and two microstrip-feed lines. The rectangular cavity is realized for operation at TE110 mode (26.5GHz), which is perturbed for radiation at two distinct frequency bands by loading a slot on the top conductor. Two microstrip-feed lines are employed for excitation of the slot, which generates two operating bands. For better understanding of radiation phenomena, the electric field distribution, equivalent circuit model, and parametric analysis are provided. To further validate the proposed design, a millimeter-wave self-diplexing antenna operating at 22 and 28GHz is built and full-wave simulated. The proposed antenna occupies a smaller footprint area of 0.396?g2 with an isolation greater than 20 dB. Additionally, the suggested antenna offers low cross-polarization level better than ?30 dB. The realized gain and efficiency of the proposed antenna at lower (upper) frequency bands are 5.5 dBi (5.4 dBi) and 90.6% (94%), respectively. The Author(s), under exclusive license to Springer Nature Switzerland AG 2026.
creator: Barik, Rusan Kumar; Rajender, Rathod; Rossi, Daniele
source: Lecture Notes in Electrical Engineering;Volume;1553 LNEE;pp.144-150
publisher: Springer Science and Business Media Deutschland GmbH
date: 01-01-2026
rights: Restricted Access; Hardcopy may be available in the library
relation: ISSN: 18761100; ISBN: 978-303217173-3;
language: English
type: Conference paper
coverage: Barik R.K., Department of Electronics and Communication Engineering, CHRIST (Deemed to be University), Karnataka, Bangalore, 560074, India; Rajender R., Department of Information Engineering, University of Pisa, Pisa, Italy; Rossi D., Department of Information Engineering, University of Pisa, Pisa, Italy