Wideband Filtering Phase Shifter Using Transversal Signal-Interference Techniques

A wideband filtering phase shifter is presented in this letter using transversal signal-interference techniques. The proposed structure creates two signal-propagation paths by introducing extra coupling between two short-ended stubs. Cascaded coupled-line sections and parallel short-ended stubs can...

Full description

Saved in:
Bibliographic Details
Published inIEEE microwave and wireless components letters Vol. 29; no. 4; pp. 252 - 254
Main Authors Zhu, He, Guo, Yingjie Jay
Format Journal Article
LanguageEnglish
Published IEEE 01.04.2019
Subjects
Coupled-line
filtering phase shifter
Microwave filters
Passband
Phase shifters
transversal signal-interference techniques
Wideband
Wireless communication
Online AccessGet full text

Cover

More Information
Summary:A wideband filtering phase shifter is presented in this letter using transversal signal-interference techniques. The proposed structure creates two signal-propagation paths by introducing extra coupling between two short-ended stubs. Cascaded coupled-line sections and parallel short-ended stubs can generate a constant passband and multiple transmission zeros (TZs) in the stopband and meanwhile provide the arbitrary value of phase shift within the filtering band range. The positions of TZs and phase shift range can be easily controlled. Explicit relations between the objective filtering band and the related parameters are given, and cases with different in-band phase shift values are studied. To validate the design, a prototype is built, simulated, and tested using microstrip lines. The experimental results agree with the predicted ones, demonstrating that the device can realize any given in-band phase shift with a wideband filtering response.
ISSN:1531-1309
1558-1764
DOI:10.1109/LMWC.2019.2898507