Resonator filters and duplexers designed from a coupling matrix
Combline cavity filter, 4 resonators, lid removed
Overview
High-selectivity filtering for repeaters and similar systems: resonator filters and duplexers designed from a coupling matrix.
From the simplest to the most complex: a 3-resonator filter, up to a duplexer of two 4-resonator channels; coupling-matrix design, the mechanical build on request.
Typical performance
Values on requesttypical
Typical values describe the antenna class, not a guarantee for a unit; “computed” marks our own simulated example.
Combline filter, 4 resonators, closed housing4 resonators, from the top without the lid3 resonators, lid removed6 resonators, lid removedCombline duplexer, 2 × 4 resonatorsDuplexer, 2 × 4 resonators, lids removed
