High directivity quarter-wave microstrip coupler with cancellation circuit of Wilkinson divider

Kazuhisa Yamauchi; Akira Inoue; Moriyasu Miyazaki

doi:10.1109/EUMC.2008.4751421

High directivity quarter-wave microstrip coupler with cancellation circuit of Wilkinson divider

Kazuhisa Yamauchi^*, Akira Inoue, Moriyasu Miyazaki

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Citations (Scopus)

Abstract

A high directivity quarter-wave microstrip coupler with a cancellation circuit of a Wilkinson divider is presented. The presented coupler utilizes a cancellation circuit between a coupling port and an isolation port of the conventional quarterwave microstrip coupler to enhance the isolation at the desired frequency. The cancellation circuit consists of the Wilkinson divider, and an attenuator. The frequency where the isolation is enhanced can be controlled by the attenuator. The cancellation circuit can be applied to the couplers that have already been fabricated. The measured directivity of the presented coupler is improved from 8.9dB to 24.9dB at 1.9GHz, compared with the conventional coupler.

Original language	English
Title of host publication	Proceedings of the 38th European Microwave Conference, EuMC 2008
Pages	195-198
Number of pages	4
DOIs	https://doi.org/10.1109/EUMC.2008.4751421
Publication status	Published - 2008
Externally published	Yes
Event	38th European Microwave Conference, EuMC 2008 - Amsterdam, Netherlands Duration: 2008 Oct 27 → 2008 Oct 31

Publication series

Name	Proceedings of the 38th European Microwave Conference, EuMC 2008

Conference

Conference	38th European Microwave Conference, EuMC 2008
Country/Territory	Netherlands
City	Amsterdam
Period	08/10/27 → 08/10/31

ASJC Scopus subject areas

Electrical and Electronic Engineering

Access to Document

10.1109/EUMC.2008.4751421

Cite this

High directivity quarter-wave microstrip coupler with cancellation circuit of Wilkinson divider. / Yamauchi, Kazuhisa; Inoue, Akira; Miyazaki, Moriyasu.

Proceedings of the 38th European Microwave Conference, EuMC 2008. 2008. p. 195-198 4751421 (Proceedings of the 38th European Microwave Conference, EuMC 2008).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Yamauchi, K, Inoue, A & Miyazaki, M 2008, High directivity quarter-wave microstrip coupler with cancellation circuit of Wilkinson divider. in Proceedings of the 38th European Microwave Conference, EuMC 2008., 4751421, Proceedings of the 38th European Microwave Conference, EuMC 2008, pp. 195-198, 38th European Microwave Conference, EuMC 2008, Amsterdam, Netherlands, 08/10/27. https://doi.org/10.1109/EUMC.2008.4751421

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title = "High directivity quarter-wave microstrip coupler with cancellation circuit of Wilkinson divider",

abstract = "A high directivity quarter-wave microstrip coupler with a cancellation circuit of a Wilkinson divider is presented. The presented coupler utilizes a cancellation circuit between a coupling port and an isolation port of the conventional quarterwave microstrip coupler to enhance the isolation at the desired frequency. The cancellation circuit consists of the Wilkinson divider, and an attenuator. The frequency where the isolation is enhanced can be controlled by the attenuator. The cancellation circuit can be applied to the couplers that have already been fabricated. The measured directivity of the presented coupler is improved from 8.9dB to 24.9dB at 1.9GHz, compared with the conventional coupler.",

author = "Kazuhisa Yamauchi and Akira Inoue and Moriyasu Miyazaki",

year = "2008",

doi = "10.1109/EUMC.2008.4751421",

language = "English",

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series = "Proceedings of the 38th European Microwave Conference, EuMC 2008",

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AU - Yamauchi, Kazuhisa

AU - Inoue, Akira

AU - Miyazaki, Moriyasu

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N2 - A high directivity quarter-wave microstrip coupler with a cancellation circuit of a Wilkinson divider is presented. The presented coupler utilizes a cancellation circuit between a coupling port and an isolation port of the conventional quarterwave microstrip coupler to enhance the isolation at the desired frequency. The cancellation circuit consists of the Wilkinson divider, and an attenuator. The frequency where the isolation is enhanced can be controlled by the attenuator. The cancellation circuit can be applied to the couplers that have already been fabricated. The measured directivity of the presented coupler is improved from 8.9dB to 24.9dB at 1.9GHz, compared with the conventional coupler.

AB - A high directivity quarter-wave microstrip coupler with a cancellation circuit of a Wilkinson divider is presented. The presented coupler utilizes a cancellation circuit between a coupling port and an isolation port of the conventional quarterwave microstrip coupler to enhance the isolation at the desired frequency. The cancellation circuit consists of the Wilkinson divider, and an attenuator. The frequency where the isolation is enhanced can be controlled by the attenuator. The cancellation circuit can be applied to the couplers that have already been fabricated. The measured directivity of the presented coupler is improved from 8.9dB to 24.9dB at 1.9GHz, compared with the conventional coupler.

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SN - 9782874870064

T3 - Proceedings of the 38th European Microwave Conference, EuMC 2008

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BT - Proceedings of the 38th European Microwave Conference, EuMC 2008

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High directivity quarter-wave microstrip coupler with cancellation circuit of Wilkinson divider

Abstract

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Conference

ASJC Scopus subject areas

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