94 GHz Butler Matrix-Integrated MTM SIW Beamforming Array in Glass IPD

In this letter, we propose a low-profile beamforming array operating in the W-band, which is based on the Butler matrix integrated with substrate-integrated waveguide metamaterial (MTM) antennas. The proposed MTM antenna achieves an enhanced bandwidth through the use of multiple resonance modes of t...

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Veröffentlicht in:	IEEE antennas and wireless propagation letters 2023-12, Vol.22 (12), p.2906-2910
Hauptverfasser:	Li, Shuping, Chiu, Kun-Dong, Gao, Donglin, Wu, Chung-Tse Michael, Kuo, Chien-Nan
Format:	Artikel
Sprache:	eng
Schlagworte:	Antenna arrays Antenna measurements Antenna radiation patterns Antennas Array signal processing Bandwidths Beamforming Butler matrices Butler matrix integrated passive device (IPD) technology Metals Metamaterials phased array substrate integrated waveguide (SIW) Substrate integrated waveguides W-band
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Beschreibung
Zusammenfassung:	In this letter, we propose a low-profile beamforming array operating in the W-band, which is based on the Butler matrix integrated with substrate-integrated waveguide metamaterial (MTM) antennas. The proposed MTM antenna achieves an enhanced bandwidth through the use of multiple resonance modes of the composite right/left-hand structure. The implementation of the proposed array is done using a low-cost glass-based integrated-passive-device (IPD) technology. The microstrip-type Butler matrix with crossover structures is designed, and its bandwidth of 12.8% at the W-band is verified with measurements. Experimental verifications of the radiation patterns are conducted to demonstrate the beamforming characteristics of the proposed IPD antenna array.
ISSN:	1536-1225 1548-5757
DOI:	10.1109/LAWP.2023.3304138