IEICE TRANSACTIONS on Electronics
High Directivity Coupler Suppressing Leak Coupling with Cancellation Circuit of Wilkinson Divider
Summary :
A high directivity microstrip coupler suppressing leak coupling 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 microstrip coupler to enhance the isolation. The cancellation circuit consists of the Wilkinson divider, the multistage attenuator, and the phase offset line. The frequency to enhance the isolation is controlled by the attenuators. As the directivity is improved without the modification of the conventional coupler, the cancellation circuit can be applied to the fabricated conventional couplers. The measured directivity of the presented 1/18 λ coupler is improved from 4.8 dB to 43.0 dB at 2.6 GHz, compared with the conventional 1/4 λ coupler with -20 dB coupling. Simultaneously, the 27.4% relative bandwidth with the 20 dB directivity is achieved.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E93-C No.7 pp.1032-1037
- Publication Date
- 2010/07/01
- Publicized
- Online ISSN
- 1745-1353
- DOI
- 10.1587/transele.E93.C.1032
- Type of Manuscript
- Special Section PAPER (Special Section on Recent Progress in Microwave and Millimeter-Wave Technologies)
- Category
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Kazuhisa YAMAUCHI, Akira INOUE, Moriyasu MIYAZAKI, "High Directivity Coupler Suppressing Leak Coupling with Cancellation Circuit of Wilkinson Divider" in IEICE TRANSACTIONS on Electronics,
vol. E93-C, no. 7, pp. 1032-1037, July 2010, doi: 10.1587/transele.E93.C.1032.
Abstract: A high directivity microstrip coupler suppressing leak coupling 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 microstrip coupler to enhance the isolation. The cancellation circuit consists of the Wilkinson divider, the multistage attenuator, and the phase offset line. The frequency to enhance the isolation is controlled by the attenuators. As the directivity is improved without the modification of the conventional coupler, the cancellation circuit can be applied to the fabricated conventional couplers. The measured directivity of the presented 1/18 λ coupler is improved from 4.8 dB to 43.0 dB at 2.6 GHz, compared with the conventional 1/4 λ coupler with -20 dB coupling. Simultaneously, the 27.4% relative bandwidth with the 20 dB directivity is achieved.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E93.C.1032/_p
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@ARTICLE{e93-c_7_1032,
author={Kazuhisa YAMAUCHI, Akira INOUE, Moriyasu MIYAZAKI, },
journal={IEICE TRANSACTIONS on Electronics},
title={High Directivity Coupler Suppressing Leak Coupling with Cancellation Circuit of Wilkinson Divider},
year={2010},
volume={E93-C},
number={7},
pages={1032-1037},
abstract={A high directivity microstrip coupler suppressing leak coupling 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 microstrip coupler to enhance the isolation. The cancellation circuit consists of the Wilkinson divider, the multistage attenuator, and the phase offset line. The frequency to enhance the isolation is controlled by the attenuators. As the directivity is improved without the modification of the conventional coupler, the cancellation circuit can be applied to the fabricated conventional couplers. The measured directivity of the presented 1/18 λ coupler is improved from 4.8 dB to 43.0 dB at 2.6 GHz, compared with the conventional 1/4 λ coupler with -20 dB coupling. Simultaneously, the 27.4% relative bandwidth with the 20 dB directivity is achieved.},
keywords={},
doi={10.1587/transele.E93.C.1032},
ISSN={1745-1353},
month={July},}
Copy
TY - JOUR
TI - High Directivity Coupler Suppressing Leak Coupling with Cancellation Circuit of Wilkinson Divider
T2 - IEICE TRANSACTIONS on Electronics
SP - 1032
EP - 1037
AU - Kazuhisa YAMAUCHI
AU - Akira INOUE
AU - Moriyasu MIYAZAKI
PY - 2010
DO - 10.1587/transele.E93.C.1032
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E93-C
IS - 7
JA - IEICE TRANSACTIONS on Electronics
Y1 - July 2010
AB - A high directivity microstrip coupler suppressing leak coupling 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 microstrip coupler to enhance the isolation. The cancellation circuit consists of the Wilkinson divider, the multistage attenuator, and the phase offset line. The frequency to enhance the isolation is controlled by the attenuators. As the directivity is improved without the modification of the conventional coupler, the cancellation circuit can be applied to the fabricated conventional couplers. The measured directivity of the presented 1/18 λ coupler is improved from 4.8 dB to 43.0 dB at 2.6 GHz, compared with the conventional 1/4 λ coupler with -20 dB coupling. Simultaneously, the 27.4% relative bandwidth with the 20 dB directivity is achieved.
ER -
English
