Patent ID: 6943744

Claim:
A waveguide diplexing and filtering device, comprising: an enclosure having a longitudinal axis; a common channel formed in said enclosure and terminating at a common port, and said common channel and said common port adapted to receive a microwave signal having at least two substantially different frequencies including an upper frequency and a lower frequency wherein said lower frequency includes two polarities; a side channel formed in said enclosure and terminating at a side port, and said side channel in communication with said common channel, and said side channel adapted to cut off said lower frequency of said microwave signal and allow said upper frequency of said microwave signal to propagate through said side channel to said side port; a main channel formed in said enclosure, terminating at a main port, and communicating with said common channel; and at least one waveguide iris element mounted within said main channel and adapted to filter said upper frequency of said microwave signal and allow said two polarities of said lower frequency of said microwave signal to pass through said iris element and propagate along said main channel to said main port.