On the use of corrugations in mode filters for oversized rectangular waveguides

Silvio Ceccuzzi, Cristina Ponti, Giuseppe Schettini, Gian Luca Ravera

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

The filtering of unwanted modes that can propagate in oversized rectangular waveguides is addressed, focusing on longitudinal corrugations partially filled with an absorber. Lengthwise slots, in the middle of top and bottom waveguide walls, can indeed extract the power of some modes from the main waveguide with negligible insertion losses for the working dominant mode. Once some power is coupled through the slot into the junction, it travels toward the absorbing material, where it is damped. This behavior is studied comparing the performance of a single continuous slot, where various modes can propagate, with the one achieved by several shorter single-mode apertures. The excitation and absorption of modes in the corrugations is estimated by means of analytical expressions under a small coupling approximation. Mono-modal corrugations achieve better performances with respect to the overmoded junction.
Original languageEnglish
DOIs
Publication statusPublished - 9 Aug 2016
Externally publishedYes
Event2016 IEEE MTT-S International Microwave Symposium, IMS 2016 - San Francisco, United States
Duration: 9 Aug 2016 → …

Conference

Conference2016 IEEE MTT-S International Microwave Symposium, IMS 2016
CountryUnited States
CitySan Francisco
Period9/8/16 → …

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All Science Journal Classification (ASJC) codes

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Ceccuzzi, S., Ponti, C., Schettini, G., & Ravera, G. L. (2016). On the use of corrugations in mode filters for oversized rectangular waveguides. Paper presented at 2016 IEEE MTT-S International Microwave Symposium, IMS 2016, San Francisco, United States. https://doi.org/10.1109/MWSYM.2016.7540276