This report describes the theory of the "T"-type coaxial notch filter and presents design curves enabling the dimensions of practical filters to be calculated rapidly. The type of filter considered ...

In the November 2012 issue I wrote about combining FM antennas by way of filters. I received a question from a reader (Danny Wilson) about how to accomplish the same thing using transmission line ...

Until the advent of FM, combiners were rarely required. After FM was introduced, the need for a method of feeding two or more FM frequencies into a single FM antenna developed. AM operation had ...

This report describes the theory of the "T"-type coaxial notch filter and presents design curves enabling the dimensions of practical filters to be calculated rapidly. The type of filter considered ...