Design of a ۴×۸ Substrate Integrated Waveguide Butler Matrix with Sidelobe Suppression at ۶۰ GHz
Publish place: International Journal of Information and Communication Technology Research (IJICT، Vol: 13، Issue: 1
Publish Year: 1399
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_ITRC-13-1_002
تاریخ نمایه سازی: 21 مرداد 1402
Abstract:
This article presents a novel ۴×۸ SIW Butler matrix (BM) with sidelobe level (SLL) suppression. The BM operates at ۶۰ GHz and is implemented with a new design to achieve a compact size, which would be attractive for future mmWave wireless systems. This beamforming network uses straight SIW phase shifters with two apertures or two metal posts to pursue a smaller circuit area than with curved line phase shifters. Using a stepwise procedure and analyzing the design equations, the crossover and other components of the BM are also designed and optimized. The reflection and isolation coefficients are lower than -۱۰ dB for all input ports and insertion loss magnitude imbalance is below ۲.۴ dB within the band from ۵۷ GHz to ۶۷ GHz. The slot array antenna fed by the BM shows an SLL lower than -۲۱ dB for inputs ۱ and ۴ and lower than -۱۴.۵ dB for inputs ۲ and ۳ and provides beam switching.
Keywords:
Beamforming network (BFN) , ۴×۸ Butler matrix , Substrate Integrated Waveguide (SIW) , Sidelobe level (SLL) , millimeter-wave
Authors
Zahra Mehrzad
Department of Electrical Engineering AmirKabir University of Technology Tehran, Iran
Gholamreza Moradi
Department of Electrical Engineering AmirKabir University of Technology Tehran, Iran
Ayaz Ghorbani
Department of Electrical Engineering AmirKabir University of Technology Tehran, Iran