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Circular TE0n Mode Filters for Guided Millimeter-Wave Transmission

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1 Author(s)

A millimeter-wave circular TE01 mode waveguide generates undesired circularly symmetric modes (TE02, TE03 modes, etc.) in bends or at discontinuities along a waveguide line. This paper describes the theory and experiment on the TE02 and TE03 mode filters developed for guided millimeter-wave transmission. The experimental results of two improved TE03 mode filters show that the attenuation of the TE03 mode is more than 16 dB for one type over the 40-70-GHz range. The TE01-mode insertion loss of another type is about 0.2 dB over the 40-80-GHz range. The present mode filters can be applied to various high-speed guided rnillimeter-wave systems currently under development.

Published in:

Microwave Theory and Techniques, IEEE Transactions on  (Volume:24 ,  Issue: 1 )