A Half-Mode CSIW Leaky-Wave Antenna with Horizontal Beam-Scanning and Stable Radiation
20th European Conference on Antennas and Propagation, EuCAP 2026, Dublin, İrlanda, 19 - 24 Nisan 2026, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Doi Numarası: 10.23919/eucap68105.2026.11612114
- Basıldığı Şehir: Dublin
- Basıldığı Ülke: İrlanda
- Anahtar Kelimeler: beam-scanning, corrugated, half-mode, leakywave antenna, side-fire, substrate integrated waveguide (SIW), wideband
- Eskişehir Osmangazi Üniversitesi Adresli: Evet
Özet
Conventional leaky-wave antennas (LWAs) typically scan their beams through the broadside direction, while designs capable of side-fire beam-scanning are significantly less common. This paper presents a wideband horizontal beam-scanning LWA with stable radiation characteristics, based on a half-mode corrugated substrate integrated waveguide (HMCSIW). The antenna's leaky-wave radiation response is realized by adding square rings to the ground plane of the HMCSIW. Furthermore, the incorporation of circular rings on the antenna's front surface enhances the stability of the side-fire beam-scanning performance. The proposed antenna achieves horizontal beamscanning over a frequency range of 13 to 22.5 GHz, corresponding to a 53.5% bandwidth. It exhibits a peak gain of 12.7 dBi with a maximum variation of 2.1 dBi, a beam-scanning range from -35° to 35°, and an average efficiency of approximately 90%. The proposed antenna can be an intriguing choice for microwave imaging applications, spectrum analysers, and next-generation radar systems.