Broadband Beam-Forming Circuit Using Microstrip Multilayer Couplers

Останков, А. В.; Щетинин, Н. Н.; Chernoyarov, Oleg V.; Pergamenchtchikov, Serguei

doi:10.15866/irecap.v10i5.19371

Cited by 2 publications

(1 citation statement)

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“…Butler matrix is a MIMO (Multiple Input, Multiple Output) system of n inputs and n outputs [15], [29]. It is used as a fixed beam former network of a Uniform Linear Array (ULA) of n elements, where n is even and is of special interest when n is equal to or greater than two; this configuration enables the possibility of steering the beam generated from n sub-beams with different directions and is usually called a switched beam system [28].…”

Section: Ii1 Butler Matrix Designmentioning

confidence: 99%

Design and Implementation of a 2.4-GHz Fully Integrated Butler Matrix for Smart Antenna System

Montoya-Villada

Morales-Guerra

Catano-Ochoa

et al. 2023

IRECAP

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This work proposes and analyzes a low-cost fixed microstrip beamforming system based on a uniform linear array with four rectangular patch antennas controlled by a Butler matrix that operates in the 2.4 GHz ISM band. A 4×4 Butler matrix consisting of four hybrid quadrature directional couplers, two crossovers, and two 45° phase shifters was designed and implemented to control the beam direction of the entire system. Similarly, a comparative study is performed between two different antenna arrays, the first consisting of a conventional linear antenna array and the second antenna array consisting of four patch antennas loaded with metamaterial structures on the ground plane. Finally, the electrical performance of both smart beamforming systems was evaluated, and their potential application as a wireless power transmitter was evaluated. Four beams with distinct orientations were created in each situation. The smart antenna based on a conventional array has a higher gain, while the smart antenna based on metamaterial structures has a higher HPBW.

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Section: Ii1 Butler Matrix Designmentioning

confidence: 99%