Air Filled Square Coaxial Transmission Lines and Filters

I Llamas Garro, Michael Lancaster, Peter Hall

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)
339 Downloads (Pure)


A suspended coaxial transmission line with an air propagation medium is presented. The transmission line is made only of metal, thereby avoiding dielectric and radiation losses. Shortcircuit stubs suspend the centre conductor of the coaxial structure which is used in the design of two dual-mode narrowband microwave filters. Stacked layers of copper sheets are used to form the square coaxial transmission line, which has low loss and low dispersion.
Original languageEnglish
Pages (from-to)155-159
Number of pages5
JournalIEE Proceedings - Microwaves, Antennas & Propagation
Issue number3
Publication statusPublished - 1 Jan 2005


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