Abstract
This paper presents a 1×4 microstrip antenna array designed for inter-satellite communication at 132 GHz, featuring right-hand circular polarization (RHCP) and Rotman-lens-based passive beam steering. The slot- and stub-loaded circular patch element achieves a 27% impedance bandwidth (118.4-154.1 GHz), a 5.6 % axial-ratio bandwidth (128.8-136.3 GHz), a peak gain of 6.78 dB, and 96.6 % simulated radiation efficiency. A five-port Rotman lens provides ±30° beam steering, while the inter-element spacing (0.594λ) and scan-angle-dependent tapering coefficients are optimized to suppress sidelobes and preserve polarization purity. Full-wave simulations confirm sidelobe levels between -5.5 dB and -13.6 dB and an axial ratio below 3 dB across the 130-134 GHz inter-satellite-link (ISL) band, with a realized array gain of 9-10 dB.
| Original language | English |
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| Title of host publication | 2025 16th International Conference on Electrical and Electronics Engineering, ELECO 2025 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9798331546946 |
| DOIs | |
| Publication status | Published - 2025 |
| Event | 2025 16th International Conference on Electrical and Electronics Engineering, ELECO 2025 - Istanbul, Turkey Duration: 27 Nov 2025 → 29 Nov 2025 |
Publication series
| Name | 2025 16th International Conference on Electrical and Electronics Engineering, ELECO 2025 |
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Conference
| Conference | 2025 16th International Conference on Electrical and Electronics Engineering, ELECO 2025 |
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| Country/Territory | Turkey |
| City | Istanbul |
| Period | 27/11/25 → 29/11/25 |
Bibliographical note
Publisher Copyright:© 2025 IEEE.
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