A Simple Design Method of the Planar Butler Matrix Using Thin Dielectric Substrate Metalized Both Side

Yoji ISOTA; Osami ISHIDA; Fumio TAKEDA

A Simple Design Method of the Planar Butler Matrix Using Thin Dielectric Substrate Metalized Both Side

Yoji ISOTA, Osami ISHIDA, Fumio TAKEDA

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Adaptive antenna is a promising to increase the spectral efficiency of mobile radio systems. We developed a compact, cost effective planar Butler Matrix as a beam forming network of a multi beam antenna. This circuit consists of a thin substrate that the conductor attaches to both sides, and two thick substrates that the ground conductor attaches to one side. In this circuit, coupling by crossover causes amplitude and phase error of the Butler Matrix. By narrowing the strip width of the crossover, crossover coupling can be suppressed 10 dB. The measurement results of the experimental 88 Butler Matrix were 0.75 dB amplitude deviation, 9.5 degree phase deviation and VSWR of less than 1.15 within the relative bandwidth of 10% at 900 MHz band.

Publication: IEICE TRANSACTIONS on Electronics Vol.E86-C No.2 pp.162-168

Publication Date: 2003/02/01

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Type of Manuscript: Special Section PAPER (Special Issue on Circuit and Device Technology for High-Speed Wireless Communication)

Category: Passive (Feeder)

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Yoji ISOTA, Osami ISHIDA, Fumio TAKEDA, "A Simple Design Method of the Planar Butler Matrix Using Thin Dielectric Substrate Metalized Both Side" in IEICE TRANSACTIONS on Electronics, vol. E86-C, no. 2, pp. 162-168, February 2003, doi: .
Abstract: Adaptive antenna is a promising to increase the spectral efficiency of mobile radio systems. We developed a compact, cost effective planar Butler Matrix as a beam forming network of a multi beam antenna. This circuit consists of a thin substrate that the conductor attaches to both sides, and two thick substrates that the ground conductor attaches to one side. In this circuit, coupling by crossover causes amplitude and phase error of the Butler Matrix. By narrowing the strip width of the crossover, crossover coupling can be suppressed 10 dB. The measurement results of the experimental 88 Butler Matrix were 0.75 dB amplitude deviation, 9.5 degree phase deviation and VSWR of less than 1.15 within the relative bandwidth of 10% at 900 MHz band.
URL: https://globals.ieice.org/en_transactions/electronics/10.1587/e86-c_2_162/_p

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@ARTICLE{e86-c_2_162,
author={Yoji ISOTA, Osami ISHIDA, Fumio TAKEDA, },
journal={IEICE TRANSACTIONS on Electronics},
title={A Simple Design Method of the Planar Butler Matrix Using Thin Dielectric Substrate Metalized Both Side},
year={2003},
volume={E86-C},
number={2},
pages={162-168},
abstract={Adaptive antenna is a promising to increase the spectral efficiency of mobile radio systems. We developed a compact, cost effective planar Butler Matrix as a beam forming network of a multi beam antenna. This circuit consists of a thin substrate that the conductor attaches to both sides, and two thick substrates that the ground conductor attaches to one side. In this circuit, coupling by crossover causes amplitude and phase error of the Butler Matrix. By narrowing the strip width of the crossover, crossover coupling can be suppressed 10 dB. The measurement results of the experimental 88 Butler Matrix were 0.75 dB amplitude deviation, 9.5 degree phase deviation and VSWR of less than 1.15 within the relative bandwidth of 10% at 900 MHz band.},
keywords={},
doi={},
ISSN={},
month={February},}

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TY - JOUR
TI - A Simple Design Method of the Planar Butler Matrix Using Thin Dielectric Substrate Metalized Both Side
T2 - IEICE TRANSACTIONS on Electronics
SP - 162
EP - 168
AU - Yoji ISOTA
AU - Osami ISHIDA
AU - Fumio TAKEDA
PY - 2003
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E86-C
IS - 2
JA - IEICE TRANSACTIONS on Electronics
Y1 - February 2003
AB - Adaptive antenna is a promising to increase the spectral efficiency of mobile radio systems. We developed a compact, cost effective planar Butler Matrix as a beam forming network of a multi beam antenna. This circuit consists of a thin substrate that the conductor attaches to both sides, and two thick substrates that the ground conductor attaches to one side. In this circuit, coupling by crossover causes amplitude and phase error of the Butler Matrix. By narrowing the strip width of the crossover, crossover coupling can be suppressed 10 dB. The measurement results of the experimental 88 Butler Matrix were 0.75 dB amplitude deviation, 9.5 degree phase deviation and VSWR of less than 1.15 within the relative bandwidth of 10% at 900 MHz band.
ER -