Super Wide Band Parabolic Reflector Design With Vivaldi Antenna Array Feed for Switchable Beam Applications
Microwave and Optical Technology Letters, cilt.67, sa.8, 2025 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 67 Sayı: 8
- Basım Tarihi: 2025
- Doi Numarası: 10.1002/mop.70352
- Dergi Adı: Microwave and Optical Technology Letters
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Communication Abstracts, Compendex, INSPEC, Metadex, DIALNET, Civil Engineering Abstracts
- Anahtar Kelimeler: multibeam scan, SWB vivaldi antenna, switchable beam
- Yıldız Teknik Üniversitesi Adresli: Evet
Özet
In this study, a multi-planar Vivaldi antenna-fed parabolic reflector antenna is presented for wideband applications operating from the L-band to beyond S-band. The proposed antenna is designed for high-gain beam-steering applications in electronic warfare such as surveillance radar, RF jammer transmitter, and drone countermeasure systems. The Vivaldi-type feeder antenna which operates from 550 MHz to 5 GHz (160.3% bandwidth) is fabricated on a low-cost FR4 substrate. Innovative gain enhancement techniques, such as corrugations and directive elements are used in the design. The antenna dimensions are 21 × 23.5 × 0.15 cm, and its standing wave ratio (SWR) remains below 2 along the operating band. The Vivaldi fed parabolic reflector antenna yields 5–24.4 dBi gain of within our frequency range starting from 550 MHz up to 5 GHz. Additionally, beam-steering performance was successfully achieved at ±7° angles. The feed array structure is proposed to obtain switchable beam characteristics. The study was validated through full-wave three-dimensional electromagnetic simulations, followed by measurements of the fabricated prototype which is compatible with simulation results.