NDLI: Balanced quad-band diplexer with wide common-mode suppression and high differential-mode isolation

Content Provider	IET Digital Library
Author	Lee, Ching Her Hsu, Chung I Gavin Wu, Shang Xing Wen, Pi Hung
Abstract	A balanced quad-band diplexer is proposed with wide common-mode (CM) suppression and high differential-mode (DM) isolation in this study. The six-port balanced diplexer was formed by combining two dual-band bandpass filters operating at 1.92/5.25 and 2.45/5.8 GHz through two stepped-impedance resonator (SIR) inserted T-junctions. By carefully designing the section length of the T-junction and the SIR length from its open-end to the joint-point with the T-junction, high isolation between diplexer channels can be attained. A prototype of the proposed balanced quad-band diplexer was implemented and measured with a DM isolation of higher than 51.8 dB and a CM suppression of larger than 47.9 dB in the four DM passbands. Good agreement was observed between the simulated and the measured results.
Starting Page	599
Ending Page	603
Page Count	5
ISSN	17518725
Volume Number	10
e-ISSN	17518733
Issue Number	Issue 6, Apr (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-map/10/6
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-map.2015.0538
Journal	IET Microwaves, Antennas & Propagation
Publisher Date	2016-04-24
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Balanced Quad-band Diplexer Channel Band-pass Filter Dual-band Bandpass Filter Filter And Other Network Frequency 1.92 GHz to 5.8 GHz High Differential-mode Isolation Isolation Technology Microwave Filter Multiplexing Equipment SIR Length Design SIR-inserted T-junctions Six-port Balanced Diplexer Switchgear T-junction Section Length Design UHF Filter Waveguide And Microwave Transmission Line Component Wide Common-mode Suppression
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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