Waveguide E -plane integrated-circuit diplexer
- 4 July 1985
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 21 (14) , 615-617
- https://doi.org/10.1049/el:19850434
Abstract
A waveguide diplexer is introduced where optimised low-insertion-loss metal insert filters are directly integrated in the E-planes of the T-junction arms. The filters are designed by the exact method of field expansion into suitable eigenmodes which takes the influences of higher-order-mode interaction and finite thickness of the inserts into account. Computer optimised design data are given which provide a metaletching technique for reliable low-cost production. Measured minimum passband insertion losses of an R120-waveguide diplexer prototype are about 0.8 dB at 10.4 GHz, and 0.5 dB at 11.2 GHz. The stopband attenuation at 10.8 GHz is about 48 dB.Keywords
This publication has 1 reference indexed in Scilit:
- A Low Cost Multiplexer for Channelized Receiver Front Ends at Millimeter WavesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005