Parallel Coupled Microstrip Couplers Compensated with Periodic Floating-Conductors on Coupled Edges

Takao FUJII; Isao OHTA; Tadashi KAWAI; Yoshihiro KOKUBO

doi:10.1093/ietele/e91-c.5.780

Parallel Coupled Microstrip Couplers Compensated with Periodic Floating-Conductors on Coupled Edges

Takao FUJII, Isao OHTA, Tadashi KAWAI, Yoshihiro KOKUBO

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This paper presents a new quarter-wavelength microstrip coupler compensated with a periodic sequence of floating metallic strips in the slots on the inner edges. After describing the characteristics of the coupled-line, as an example, a 15-dB coupler is designed and a high directivity of 30 dB or more in theory is obtained over a full band of a single-section coupler. Next, couplers with various coupling factors are designed, and the usefulness for very loose coupling is demonstrated. Furthermore, a three-section coupler is designed to show the effectiveness in a wide frequency range. The validity of the design concept and procedure is confirmed by electromagnetic simulations and experiments.

Publication: IEICE TRANSACTIONS on Electronics Vol.E91-C No.5 pp.780-787

Publication Date: 2008/05/01

Publicized

Online ISSN: 1745-1353

DOI: 10.1093/ietele/e91-c.5.780

Type of Manuscript: PAPER

Category: Microwaves, Millimeter-Waves

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Takao FUJII, Isao OHTA, Tadashi KAWAI, Yoshihiro KOKUBO, "Parallel Coupled Microstrip Couplers Compensated with Periodic Floating-Conductors on Coupled Edges" in IEICE TRANSACTIONS on Electronics, vol. E91-C, no. 5, pp. 780-787, May 2008, doi: 10.1093/ietele/e91-c.5.780.
Abstract: This paper presents a new quarter-wavelength microstrip coupler compensated with a periodic sequence of floating metallic strips in the slots on the inner edges. After describing the characteristics of the coupled-line, as an example, a 15-dB coupler is designed and a high directivity of 30 dB or more in theory is obtained over a full band of a single-section coupler. Next, couplers with various coupling factors are designed, and the usefulness for very loose coupling is demonstrated. Furthermore, a three-section coupler is designed to show the effectiveness in a wide frequency range. The validity of the design concept and procedure is confirmed by electromagnetic simulations and experiments.
URL: https://global.ieice.org/en_transactions/electronics/10.1093/ietele/e91-c.5.780/_p

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@ARTICLE{e91-c_5_780,
author={Takao FUJII, Isao OHTA, Tadashi KAWAI, Yoshihiro KOKUBO, },
journal={IEICE TRANSACTIONS on Electronics},
title={Parallel Coupled Microstrip Couplers Compensated with Periodic Floating-Conductors on Coupled Edges},
year={2008},
volume={E91-C},
number={5},
pages={780-787},
abstract={This paper presents a new quarter-wavelength microstrip coupler compensated with a periodic sequence of floating metallic strips in the slots on the inner edges. After describing the characteristics of the coupled-line, as an example, a 15-dB coupler is designed and a high directivity of 30 dB or more in theory is obtained over a full band of a single-section coupler. Next, couplers with various coupling factors are designed, and the usefulness for very loose coupling is demonstrated. Furthermore, a three-section coupler is designed to show the effectiveness in a wide frequency range. The validity of the design concept and procedure is confirmed by electromagnetic simulations and experiments.},
keywords={},
doi={10.1093/ietele/e91-c.5.780},
ISSN={1745-1353},
month={May},}

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TY - JOUR
TI - Parallel Coupled Microstrip Couplers Compensated with Periodic Floating-Conductors on Coupled Edges
T2 - IEICE TRANSACTIONS on Electronics
SP - 780
EP - 787
AU - Takao FUJII
AU - Isao OHTA
AU - Tadashi KAWAI
AU - Yoshihiro KOKUBO
PY - 2008
DO - 10.1093/ietele/e91-c.5.780
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E91-C
IS - 5
JA - IEICE TRANSACTIONS on Electronics
Y1 - May 2008
AB - This paper presents a new quarter-wavelength microstrip coupler compensated with a periodic sequence of floating metallic strips in the slots on the inner edges. After describing the characteristics of the coupled-line, as an example, a 15-dB coupler is designed and a high directivity of 30 dB or more in theory is obtained over a full band of a single-section coupler. Next, couplers with various coupling factors are designed, and the usefulness for very loose coupling is demonstrated. Furthermore, a three-section coupler is designed to show the effectiveness in a wide frequency range. The validity of the design concept and procedure is confirmed by electromagnetic simulations and experiments.
ER -