Design of modified 4 × 6  filtering butler matrix based on all-resonator structures

Qiang Shao; Fu-chang Chen; Yi Wang; Qing-xin Chu; Michael J. Lancaster

doi:10.1109/TMTT.2019.2925113

Design of modified 4 × 6 filtering butler matrix based on all-resonator structures

Qiang Shao, Fu-chang Chen, Yi Wang, Qing-xin Chu, Michael J. Lancaster

Electronic, Electrical and Systems Engineering

Research output: Contribution to journal › Article › peer-review

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Abstract

In this paper, two novel 4 × 6 filtering Butler matrices with uniform and nonuniform power distribution are proposed. The matrices, consisting of a network of coupled resonators and two phase shifters, provide power division and phase shift together with a bandpass transfer function. The analytical synthesis procedures for the 4 × 6 filtering Butler matrices are presented. To verify the concept experimentally, two 4 × 6 filtering Butler matrices, operating at 2.4 GHz, with uniform and nonuniform power distribution are designed, fabricated, and measured. Simulated and measured results are found to be in good agreement with each other. Multibeam antenna arrays are realized by using the Butler matrix, and the theoretical analysis has been confirmed by measurements of multibeam antenna arrays, which show reduced sidelobe level (SLL).

Original language	English
Pages (from-to)	3617-3627
Number of pages	11
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	67
Issue number	9
Early online date	15 Jul 2019
DOIs	https://doi.org/10.1109/TMTT.2019.2925113
Publication status	Published - 4 Sept 2019

Keywords

Bandpass filter
Butler matrix
microstrip
switched-beam antenna
Butler matrices
Transmission line matrix methods
Couplers
Resonators
Antenna measurements
Switches

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Shao_et_al_Design_of_modified_4_×_6_filtering_butler_matrix_based_on_all-resonator_structures_IEEE_Transactions_on_Microwave_Theory_and_Techniques_2019
Checked for eligibility: 31/10/2019 © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. Q. Shao, F. Chen, Y. Wang, Q. Chu and M. J. Lancaster, "Design of Modified $4\times6$ Filtering Butler Matrix Based on All-Resonator Structures," in IEEE Transactions on Microwave Theory and Techniques, vol. 67, no. 9, pp. 3617-3627, Sept. 2019. doi: 10.1109/TMTT.2019.2925113
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Cite this

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title = "Design of modified 4 × 6 filtering butler matrix based on all-resonator structures",

abstract = "In this paper, two novel 4 × 6 filtering Butler matrices with uniform and nonuniform power distribution are proposed. The matrices, consisting of a network of coupled resonators and two phase shifters, provide power division and phase shift together with a bandpass transfer function. The analytical synthesis procedures for the 4 × 6 filtering Butler matrices are presented. To verify the concept experimentally, two 4 × 6 filtering Butler matrices, operating at 2.4 GHz, with uniform and nonuniform power distribution are designed, fabricated, and measured. Simulated and measured results are found to be in good agreement with each other. Multibeam antenna arrays are realized by using the Butler matrix, and the theoretical analysis has been confirmed by measurements of multibeam antenna arrays, which show reduced sidelobe level (SLL).",

keywords = "Bandpass filter, Butler matrix, microstrip, switched-beam antenna, Butler matrices, Transmission line matrix methods, Couplers, Resonators, Antenna measurements, Switches",

author = "Qiang Shao and Fu-chang Chen and Yi Wang and Qing-xin Chu and Lancaster, {Michael J.}",

year = "2019",

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doi = "10.1109/TMTT.2019.2925113",

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T1 - Design of modified 4 × 6 filtering butler matrix based on all-resonator structures

AU - Shao, Qiang

AU - Chen, Fu-chang

AU - Wang, Yi

AU - Chu, Qing-xin

AU - Lancaster, Michael J.

PY - 2019/9/4

Y1 - 2019/9/4

N2 - In this paper, two novel 4 × 6 filtering Butler matrices with uniform and nonuniform power distribution are proposed. The matrices, consisting of a network of coupled resonators and two phase shifters, provide power division and phase shift together with a bandpass transfer function. The analytical synthesis procedures for the 4 × 6 filtering Butler matrices are presented. To verify the concept experimentally, two 4 × 6 filtering Butler matrices, operating at 2.4 GHz, with uniform and nonuniform power distribution are designed, fabricated, and measured. Simulated and measured results are found to be in good agreement with each other. Multibeam antenna arrays are realized by using the Butler matrix, and the theoretical analysis has been confirmed by measurements of multibeam antenna arrays, which show reduced sidelobe level (SLL).

AB - In this paper, two novel 4 × 6 filtering Butler matrices with uniform and nonuniform power distribution are proposed. The matrices, consisting of a network of coupled resonators and two phase shifters, provide power division and phase shift together with a bandpass transfer function. The analytical synthesis procedures for the 4 × 6 filtering Butler matrices are presented. To verify the concept experimentally, two 4 × 6 filtering Butler matrices, operating at 2.4 GHz, with uniform and nonuniform power distribution are designed, fabricated, and measured. Simulated and measured results are found to be in good agreement with each other. Multibeam antenna arrays are realized by using the Butler matrix, and the theoretical analysis has been confirmed by measurements of multibeam antenna arrays, which show reduced sidelobe level (SLL).

KW - Bandpass filter

KW - Butler matrix

KW - microstrip

KW - switched-beam antenna

KW - Butler matrices

KW - Transmission line matrix methods

KW - Couplers

KW - Resonators

KW - Antenna measurements

KW - Switches

U2 - 10.1109/TMTT.2019.2925113

DO - 10.1109/TMTT.2019.2925113

M3 - Article

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VL - 67

SP - 3617

EP - 3627

JO - IEEE Transactions on Microwave Theory and Techniques

JF - IEEE Transactions on Microwave Theory and Techniques

IS - 9

ER -

Design of modified 4 × 6 filtering butler matrix based on all-resonator structures

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Keywords

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