Coaxial Transmission-Line Filters

Microwave filters based upon coaxial structures are not difficult to construct, and for wide-band applications they have an advantage over cavity types in that the terminal matching problems are more easily met. For narrow-band work the cavity is superior because of its higher Q. A tentative analysis of coaxial transmission-line band-pass filters is given and experimental work in support of the analytical results is included. A TE-mode high-pass filter is discussed and experimental data presented.