Butler Matrix Based Substrate Integrated Waveguide without Crossover and Phase shifter for 26 GHz Applications


Nayyef Zubaidi, Nawres Abbas and Tan, Kim Geok and Zakaria, Zahriladha (2022) Butler Matrix Based Substrate Integrated Waveguide without Crossover and Phase shifter for 26 GHz Applications. In: 2nd FET PG Engineering Colloquium Proceedings 2022, 1-15 December 2022, Multimedia University, Malaysia. (Unpublished)

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The current wireless communications are urgently needed to provide huge data rates, high gain and high directivity radiation pattern beams. Therefore, beamforming networks (BFNs) are introduced to provide these needs. Butler matrix (BM) is a type of beamforming network, which can be realized using fixed network circuits and feeds the antenna array. BM at millimetre waves suffers from components loss and phase errors with big size for massive network, especially when it is implemented using microstrip structures. Different transmission lines such as waveguide and substrate integrated waveguide (SIW) are studied and introduced for realizing Butler matrix. SIW structures are good candidate for implementation of BM due to its property of low loss transmission line comprises the properties of microstrip and waveguide technology. However, SIW antennas and structures at millimetre wave have unwanted radiation losses comes from the vias holes. In addition, the vias separation distance is depended on waveguide size, which leads to a bigger size for massive beamforming network at 26 GHz. Hence, this work proposed a compact size and optimal SIW antenna beamforming structure to reduce the vias losses and provides higher bandwidth and gain at 26 GHz. The proposed designs will be simulated using CST software and fabricated by PCB LPKF ProtoMat printer. The outcomes of wide bandwidth more than 1 GHz and high directive gain well than 10 dB for the beamforming network are expected.

Item Type: Conference or Workshop Item (Other)
Uncontrolled Keywords: Wireless communication systems
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101-6720 Telecommunication. Including telegraphy, telephone, radio, radar, television
Divisions: Faculty of Engineering and Technology (FET)
Depositing User: Ms Nurul Iqtiani Ahmad
Date Deposited: 16 Feb 2023 06:54
Last Modified: 16 Feb 2023 06:54
URII: http://shdl.mmu.edu.my/id/eprint/10838


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