Journal of Radio Electronics. eISSN 1684-1719. 2024. №11
Full text in Russian (pdf)
DOI: https://doi.org/10.30898/1684-1719.2024.11.19
BROADBAND BUTLER MATRIX 4X4 WITH CROSSOVER
AS A DIFFERENTIAL PHASE SHIFTER
S.A. Alekseytsev, A.P. Gorbachev, Yu.N. Parshin
Novosibirsk State Technical University
630073, Novosibirsk, Karl Marx Ave., 20
The paper was received August 12, 2024.
Abstract. The aim of the work is to develop a broadband beam forming device based on a systems approach. The layout of the 4x4 Butler matrix presented in the work allows minimizing the overall dimensions of the beam forming device. The method used in the work allows you to bypass problems with interference at the nodes of line intersections from opposite sides of the board, thereby eliminating unnecessary capacity coupling. The crossover formed from two sequentially installed directional couplers ensures the absence of a signal at the output, which comes from a galvanic coupled input due to the out-of-phase division. The main electrodynamic characteristics of both the component parts of the beam forming device, such as the directional coupler and crossover, and the entire device as a whole are estimated. The entire design of the Butler matrix is assembled on a dielectric substrate made of domestic material FAF-4D with a relative permittivity of 2.5 and a thickness of 0.3 mm, which is located between two dielectric layers 1.5 mm thick.
Key words: beam forming device, Butler matrix, directional coupler, crossover.
Financing: The study was supported by a grant from the Russian Science Foundation No. 24-29-20048, https://rscf.ru/project/24-29-20048/.
Corresponding author: Parshin Yuri Nikolaevich, jurparnik@mail.ru
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For citation:
Alekseytsev A.S., Gorbachev A.P., Parshin Yu.N. Broadband Butler matrix 4x4 with crossover as a differential phase shifter // Journal of Radio Electronics. – 2024. – №. 11. https://doi.org/10.30898/1684-1719.2024.11.19 (In Russian)