Compact and Wideband Parallel-Strip 180° Hybrid Coupler with Arbitrary Power Division Ratios
Joint Authors
Source
International Journal of Microwave Science and Technology
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-12-26
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
This paper presents a class of wideband 180° hybrid (rat race) couplers implemented by parallel-strip line.
By replacing the 270° arm of a conventional 180° hybrid coupler by a 90° arm with phase inverter, the bandwidth of the coupler is greatly enhanced and the total circuit size is reduced by almost half.
Simple design formulas relating the characteristic impedance of the arms and power division ration are derived.
To demonstrate the concept, four couplers with different power division ratios of 1, 2, 4, and 8 were designed, fabricated, and tested.
S-parameters of the coupler are simulated and measured with good agreement.
All working prototypes operate more than 112% impedance bandwidth with more than 25 dB port-to-port isolation and less than 5° absolute phase imbalance.
The proposed 180° hybrid couplers can be employed as a wideband in-phase/differential power divider/combiner, which are essential for many RF and microwave subsystem designs.
American Psychological Association (APA)
Chiu, Leung& Xue, Quan. 2013. Compact and Wideband Parallel-Strip 180° Hybrid Coupler with Arbitrary Power Division Ratios. International Journal of Microwave Science and Technology،Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-481305
Modern Language Association (MLA)
Chiu, Leung& Xue, Quan. Compact and Wideband Parallel-Strip 180° Hybrid Coupler with Arbitrary Power Division Ratios. International Journal of Microwave Science and Technology No. 2013 (2013), pp.1-10.
https://search.emarefa.net/detail/BIM-481305
American Medical Association (AMA)
Chiu, Leung& Xue, Quan. Compact and Wideband Parallel-Strip 180° Hybrid Coupler with Arbitrary Power Division Ratios. International Journal of Microwave Science and Technology. 2013. Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-481305
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-481305