NDLI: Wide stopband out-of-phase filtering power divider using double-sided parallel-strip line

Content Provider	IET Digital Library
Author	Lu, Yun Long Wang, Yi Hua, Changzhou Liu, Taijun
Abstract	This Letter presents a novel out-of-phase filtering power divider (FPD) with a very wide stopband by using double-sided parallel-strip line (DSPSL) and through ground via (TGV). The DSPSL structure facilitates the out-of-phase outputs of the FPD. The TGV and two complex-impedance terminations connected to the common input port are employed to achieve the isolation. By choosing proper feeding coupling region and the loading resistors at the centre of the resonators, the second, third and fourth harmonics are suppressed. For verification, a prototype FPD operating at 1.85 GHz (f 0) with 5.2% bandwidth is designed, fabricated and measured. The experimental results show that the isolation between the output ports is better than 24 dB across the passband, and the 28 dB rejection band is extended to 4.6f 0.
Starting Page	1659
Ending Page	1661
Page Count	3
ISSN	00135194
Volume Number	53
e-ISSN	1350911X
Issue Number	Issue 25, Dec (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/53/25
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2017.3677
Journal	Electronics Letters
Publisher Date	2017-11-14
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Band-stop Filter Complex-impedance Terminations Double-sided Parallel-strip Line DSPSL Structure Feeding Coupling Region FPD Frequency 1.85 GHz Harmonics Suppression Loading Resistors Passive Filter Passive Network Power Divider Resonator Resonator Filter Strip Line Filter TGV Through Ground Via UHF Filter UHF Resonator Waveguide And Microwave Transmission Line Component Wide Stopband Out-of-phase Filtering Power Divider
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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