Title :
Millimeter-wave Ka-band H-plane diplexers and multiplexers
Author :
Rong, Yu ; Yao, Hui-Wen ; Zaki, Kawthar A. ; Dolan, Tim G.
Author_Institution :
Dept. of Electr. Eng., Maryland Univ., College Park, MD, USA
fDate :
12/1/1999 12:00:00 AM
Abstract :
Millimeter-wave H-plane diplexers/multiplexers are designed using modified H-plane waveguide T-junctions and modified inductive window bandpass filters. Modeling of the diplexers/multiplexers are performed using the full-wave mode-matching method to obtain the generalized scattering matrices of the building blocks and by the cascading procedure to provide the overall frequency response. A complete systematic optimization procedure leads to the desired diplexer/multiplexer design. The validity of employing the modified H-plane T-junctions in the diplexer/multiplexer configurations are demonstrated by the design examples. A millimeter-wave Ka upper band diplexer based on the simulated results was built and tested. Without any tuning, excellent experimental results are obtained, which verified the full-wave mode-matching-based precise design
Keywords :
S-matrix theory; band-pass filters; frequency response; millimetre wave filters; mode matching; multiplexing equipment; waveguide junctions; H-plane diplexers; H-plane multiplexers; H-plane waveguide T-junctions; Ka-band; cascading procedure; full-wave mode-matching method; generalized scattering matrices; inductive window bandpass filters; millimeter-wave technology; overall frequency response; systematic optimization procedure; Band pass filters; Design optimization; Frequency response; Millimeter wave technology; Mode matching methods; Multiplexing; Scattering; Testing; Transmission line matrix methods; Windows;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
