NDLI: Development of Millimeter-Wave Planar Diplexers Based on Complementary Characters of Dual-Mode Substrate Integrated Waveguide Filters With Circular and Elliptic Cavities

Content Provider	IEEE Xplore Digital Library
Author	Hong Jun Tang Wei Hong Ji-Xin Chen Guo Qing Luo Ke Wu
Copyright Year	1963
Abstract	A novel high-performance millimeter-wave planar diplexer is developed based on the complementary characters of substrate integrated waveguide (SIW) dual-mode filters with circular and elliptic cavities by making the tradeoff between the isolation, insertion loss, and selectivity. The responses of the dual-mode SIW circular and elliptic cavities are first investigated. It can be found that the upper side response of the circular cavity and the lower side response of the elliptic cavity are very steep. The diplexers with high isolation performance are then designed based on the complementary response characters of circular and elliptic cavities. A diplexer with two dual-mode SIW circular and elliptic cavities is designed and fabricated with a normal printed circuit board process. The measured insertion losses are 1.95 and 2.09 dB in the upper and lower passbands centered at 26 and 25 GHz with the fractional bandwidths of 5.2% and 5.4%. The isolation is lower than - 50dB
Sponsorship	IEEE Microwave Theory and Techniques Society
Starting Page	776
Ending Page	782
Page Count	7
File Size	1547822
File Format	PDF
ISSN	00189480
Volume Number	55
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-04-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Planar waveguides Filters Dielectric losses Insertion loss Millimeter wave communication Coplanar waveguides Printed circuits Waveguide transitions Millimeter wave technology Microstrip substrate integrated waveguide (SIW) Circular cavity diplexer dual-mode filter elliptic cavity
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering Radiation

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