Novel Filtering Power Divider With Wide Stopband Using Discriminating Coupling

A novel filtering power divider with wide stopband is presented in this letter. It utilizes four coupled quarter-wavelength resonators to obtain dual functions. Discriminating coupling is applied to the input and output feed lines and resonators, which not only to provide suitable coupling strength...

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Bibliographic Details
Published inIEEE microwave and wireless components letters Vol. 26; no. 8; pp. 580 - 582
Main Authors Zhao, Xiao-Lan, Gao, Li, Zhang, Xiu Yin, Xu, Jin-Xu
Format Journal Article
LanguageEnglish
Published IEEE 01.08.2016
Subjects
Bandpass response
Bandwidth
Coupling
Couplings
discriminating coupling
Feeds
Filtering
Filtering theory
Filtration
high selectivity
Microwaves
Passband
power divider
Power dividers
Resistors
Resonators
Wavelengths
wide stopband
Wireless communication
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Summary:A novel filtering power divider with wide stopband is presented in this letter. It utilizes four coupled quarter-wavelength resonators to obtain dual functions. Discriminating coupling is applied to the input and output feed lines and resonators, which not only to provide suitable coupling strength but also to suppress 3f 0 and 5f 0 (f 0 is the operating frequency). A resistor is connected at the two open-ends of the input feed line to obtain high isolation. Transmission zeros are generated near the passband edges, resulting in high selectivity. For demonstration, a power divider with filtering function as well as wide stopband is implemented. Good agreement between the prediction and measurement validates the proposed method.
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ISSN:1531-1309
1558-1764
DOI:10.1109/LMWC.2016.2585551