NDLI: Compact diplexer using microstrip half- and quarter-wavelength resonators

Content Provider	IET Digital Library
Author	Yan, Jun Mei Zhou, Hai Ying Cao, Liang Zu
Abstract	This Letter presents a compact microstrip diplexer. The high-frequency signal path is constructed by two electrically-coupling half-wavelength resonators, its external coupling adopts the tapped line structure. The low-frequency signal path is formed by two magnetically-coupling quarter-wavelength resonators, its external coupling is accomplished by microstrip coupling lines, which are formed from the tapped line structure and resonator of the high-frequency signal paths. The novel combination of the two signal path removes the need of T-junction in conventional diplexers. Meantime, the coupling strength of the two pass bands at the input port can be separately designed. A diplexer with Chebyshev frequency response at both signal paths with the central frequencies of 1.8/2.4 GHz is designed, fabricated and measured. The measured results give a good agreement with the simulated ones, which verifies the effectiveness of the diplexer.
Starting Page	1613
Ending Page	1615
Page Count	3
ISSN	00135194
Volume Number	52
e-ISSN	1350911X
Issue Number	Issue 19, Sep (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/52/19
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2016.2127
Journal	Electronics Letters
Publisher Date	2016-08-30
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Chebyshev Frequency Response Compact Microstrip Diplexer Coupled Circuit Electrically-coupling Half-wavelength Resonator Frequency 1.8 GHz Frequency 2.4 GHz Frequency Response High-frequency Signal Path Construction Low-frequency Signal Path Formation Magnetically-coupling Quarter-wavelength Resonator Microstrip Couplers Microstrip Coupling Line Microstrip Half-wavelength Resonator Microstrip Line Microstrip Quarter-wavelength Resonator Microstrip Resonator Multiplexing Equipment T-junction Tapped Line Structure UHF Resonator Waveguide And Microwave Transmission Line Waveguide And Microwave Transmission Line Component
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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