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Wideband Microstrip 90° Hybrid Coupler Using High Pass Network
Author
Source
International Journal of Microwave Science and Technology
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-04-07
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
A wideband 90° hybrid coupler has been presented and implemented in planar microstrip circuit.
With similar structure of conversional 2-section branch-line coupler, the proposed coupler consists of a lumped high-pass network but not the quarter wavelength transmission at the center.
The values of all lumped elements were optimized to replace a quarter-wavelength transmission line with a phase inverter.
To demonstrate the proposed concept, a 1-GHz prototype was fabricated and tested.
It achieves 90% impedance bandwidth with magnitude of S11 less than −10 dB.
Within this bandwidth, more than 13 dB port-to-port isolation, less than 5.0 degree phase imbalance, and less than 4.5 dB magnitude imbalance are achieved, simultaneously.
The proposed coupler not only achieves much wider bandwidth but also occupies less circuit area than that of the conversional 2-section branch-line coupler.
American Psychological Association (APA)
Chiu, Leung. 2014. Wideband Microstrip 90° Hybrid Coupler Using High Pass Network. International Journal of Microwave Science and Technology،Vol. 2014, no. 2014, pp.1-6.
https://search.emarefa.net/detail/BIM-503605
Modern Language Association (MLA)
Chiu, Leung. Wideband Microstrip 90° Hybrid Coupler Using High Pass Network. International Journal of Microwave Science and Technology No. 2014 (2014), pp.1-6.
https://search.emarefa.net/detail/BIM-503605
American Medical Association (AMA)
Chiu, Leung. Wideband Microstrip 90° Hybrid Coupler Using High Pass Network. International Journal of Microwave Science and Technology. 2014. Vol. 2014, no. 2014, pp.1-6.
https://search.emarefa.net/detail/BIM-503605
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-503605