On Mon, Mar 11, 2019 at 05:54 AM, Marcus Gustafsson wrote:
what about pipe cap filters?
Reminds me of this design of Cavity Filter that almost looks like a combination of the Interdigital Filter and Pipe Cap Filter (coupling difference only looks like):
?(see link below for more details, this is the SA link)
Here is the home link:?
jafinch78 .