A Novel Directional Coupler Loaded with Feedback Capacitances and Its Applications

Motomi ABE; Yukihiro TAHARA; Tetsu OWADA; Naofumi YONEDA; Hiroaki MIYASHITA

doi:10.1587/transele.E99.C.85

A Novel Directional Coupler Loaded with Feedback Capacitances and Its Applications

Motomi ABE, Yukihiro TAHARA, Tetsu OWADA, Naofumi YONEDA, Hiroaki MIYASHITA

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Summary :

A novel directional coupler loaded with feedback capacitances on the coupled lines is presented. Its effect of enhancing the coupling is qualitatively shown by deriving an equation for the coupling. Besides, a method to compensate for the phase difference between the even and odd modes of the coupler is presented. To demonstrate, a novel tandem 3-dB coupler consisting of the proposed coupled lines is designed and described. In addition, a waveguide (rectangular coaxial line) 8×8 HYB matrix using planar double-layer structure that is composed of the proposed tandem 3-dB couplers and branch-line couplers, which is operated in S-band, is designed and fabricated showing excellent performance.

Publication: IEICE TRANSACTIONS on Electronics Vol.E99-C No.1 pp.85-94

Publication Date: 2016/01/01

Publicized

Online ISSN: 1745-1353

DOI: 10.1587/transele.E99.C.85

Type of Manuscript: PAPER

Category: Microwaves, Millimeter-Waves

Authors

Motomi ABE
  Mitsubishi Electric Corporation
Yukihiro TAHARA
  Mitsubishi Electric Corporation
Tetsu OWADA
  Mitsubishi Electric Corporation
Naofumi YONEDA
  Mitsubishi Electric Corporation
Hiroaki MIYASHITA
  Mitsubishi Electric Corporation

Keyword

feedback capacitance, coupled lines, tandem 3-dB coupler, stubs, rectangular coaxial line, 8×8 HYB matrix

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Motomi ABE, Yukihiro TAHARA, Tetsu OWADA, Naofumi YONEDA, Hiroaki MIYASHITA, "A Novel Directional Coupler Loaded with Feedback Capacitances and Its Applications" in IEICE TRANSACTIONS on Electronics, vol. E99-C, no. 1, pp. 85-94, January 2016, doi: 10.1587/transele.E99.C.85.
Abstract: A novel directional coupler loaded with feedback capacitances on the coupled lines is presented. Its effect of enhancing the coupling is qualitatively shown by deriving an equation for the coupling. Besides, a method to compensate for the phase difference between the even and odd modes of the coupler is presented. To demonstrate, a novel tandem 3-dB coupler consisting of the proposed coupled lines is designed and described. In addition, a waveguide (rectangular coaxial line) 8×8 HYB matrix using planar double-layer structure that is composed of the proposed tandem 3-dB couplers and branch-line couplers, which is operated in S-band, is designed and fabricated showing excellent performance.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E99.C.85/_p

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@ARTICLE{e99-c_1_85,
author={Motomi ABE, Yukihiro TAHARA, Tetsu OWADA, Naofumi YONEDA, Hiroaki MIYASHITA, },
journal={IEICE TRANSACTIONS on Electronics},
title={A Novel Directional Coupler Loaded with Feedback Capacitances and Its Applications},
year={2016},
volume={E99-C},
number={1},
pages={85-94},
abstract={A novel directional coupler loaded with feedback capacitances on the coupled lines is presented. Its effect of enhancing the coupling is qualitatively shown by deriving an equation for the coupling. Besides, a method to compensate for the phase difference between the even and odd modes of the coupler is presented. To demonstrate, a novel tandem 3-dB coupler consisting of the proposed coupled lines is designed and described. In addition, a waveguide (rectangular coaxial line) 8×8 HYB matrix using planar double-layer structure that is composed of the proposed tandem 3-dB couplers and branch-line couplers, which is operated in S-band, is designed and fabricated showing excellent performance.},
keywords={},
doi={10.1587/transele.E99.C.85},
ISSN={1745-1353},
month={January},}

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TY - JOUR
TI - A Novel Directional Coupler Loaded with Feedback Capacitances and Its Applications
T2 - IEICE TRANSACTIONS on Electronics
SP - 85
EP - 94
AU - Motomi ABE
AU - Yukihiro TAHARA
AU - Tetsu OWADA
AU - Naofumi YONEDA
AU - Hiroaki MIYASHITA
PY - 2016
DO - 10.1587/transele.E99.C.85
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E99-C
IS - 1
JA - IEICE TRANSACTIONS on Electronics
Y1 - January 2016
AB - A novel directional coupler loaded with feedback capacitances on the coupled lines is presented. Its effect of enhancing the coupling is qualitatively shown by deriving an equation for the coupling. Besides, a method to compensate for the phase difference between the even and odd modes of the coupler is presented. To demonstrate, a novel tandem 3-dB coupler consisting of the proposed coupled lines is designed and described. In addition, a waveguide (rectangular coaxial line) 8×8 HYB matrix using planar double-layer structure that is composed of the proposed tandem 3-dB couplers and branch-line couplers, which is operated in S-band, is designed and fabricated showing excellent performance.
ER -