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Design and Analysis of Schiffman Phase Shifter Under Operation of its Second Phase Period
Lyu Y.-P.1,2; Zhu L.1,2; Cheng C.-H.1
2018-07-01
Source PublicationIEEE Transactions on Microwave Theory and Techniques
ISSN00189480
Volume66Issue:7Pages:3263-3269
Abstract

In this paper, a new design concept of Schiffman phase shifters under the operation of the second phase period in frequency domain is presented and analyzed. By investigating phase properties of the C-section structure, we first find that its second phase period is another independent and distinctive working region for Schiffman phase shifter, in addition to its first phase period. In contrast to traditional counterparts working on the first phase period, which are suitable for small phase shift from 0° to 90°, the Schiffman phase shifters on the second phase period are suitable for the large phase shift from 90° to 180°. It is because of the opposite phase variation property that the electrical length of reference line gets shortened as the phase shift value increases. Compared with the first phase period, the second phase period can achieve wider phase shift bandwidth under the same coupling degree. This feature is believed to be very useful in the limited realizable coupling degree cases. In this context, the closed-form synthesis formulas of Schiffman phase shifter on the second phase period are presented. Meanwhile, detail theoretical analysis of the phase shift bandwidth and phase deviation is carried out. In final, two Schiffman phase shifters on the first and second phase periods are designed and fabricated to validate our proposed concept and approach in the experiment.

KeywordC-section Phase Properties Schiffman Phase Shifter Second Phase Period Wideband
DOI10.1109/TMTT.2018.2829170
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000437267000009
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Cited Times [WOS]:4   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Affiliation1.School of Electronic Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
2.Department of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau, Macau, China
First Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Lyu Y.-P.,Zhu L.,Cheng C.-H.. Design and Analysis of Schiffman Phase Shifter Under Operation of its Second Phase Period[J]. IEEE Transactions on Microwave Theory and Techniques,2018,66(7):3263-3269.
APA Lyu Y.-P.,Zhu L.,&Cheng C.-H..(2018).Design and Analysis of Schiffman Phase Shifter Under Operation of its Second Phase Period.IEEE Transactions on Microwave Theory and Techniques,66(7),3263-3269.
MLA Lyu Y.-P.,et al."Design and Analysis of Schiffman Phase Shifter Under Operation of its Second Phase Period".IEEE Transactions on Microwave Theory and Techniques 66.7(2018):3263-3269.
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