Triple mode dielectric loaded bandpass filter
AssigneeCom Dev Ltd.
InventorsWai-Cheung Tang, David Siu, Bruce C. Beggs, Joseph Sferrazza
Life of this patent
Estimating the term…
Abstract
A triple mode dielectric loaded bandpass filter has at least one cavity resonating in three independent orthogonal modes. A triple mode cavity can be mounted adjacent to either single, dual or triple mode cavities. Inter-cavity coupling is achieved through the iris having two separate apertures that together form a T-shape. The cavities can be planar mounted. The filter is designed for use in the satellite communication industry and results in substantial savings in weight and size when compared to previous filters.
Claims16
A triple mode function bandpass filter comprising at least one waveguide cavity resonating in three independent orthogonal modes, one of said modes being different from the other two modes, said filter having an input and output for transferring electromagnetic energy into and out of said filter, each cavity having a longitudinal axis that is parallel to a side wall of said cavity, each triple mode cavity having three coupling screws and three tuning screws mounted therein, said coupling screws coupling energy from one mode to another and each of said tuning screws controlling the resonant frequency of a different mode, each triple mode cavity having a dielectric resonator mounted coaxially with the longitudinal axis of that cavity.
Dependencies are inferred from the claim text.