Patent ID: 7928816

Claim:
A delay filter module comprising: a printed circuit board defining at least respective RF signal input/output transmission lines; a dielectric monoblock bandpass filter mounted on the printed circuit board and adapted to provide and pass a delayed and filtered RF signal through the delay filter module, the dielectric monoblock bandpass filter defining at least two resonators and at least two RF signal input/output ports; a circuit for compensating the delay in the RF signal passing through the dielectric boneblack band pass filter, the circuit including: a hybrid coupler mounted on the printed circuit board and defining at least four RF signal input/output ports; and a dielectric reactive termination monoblock including at least two dielectric reactive termination resonators being spaced from each other a distance greater than the width of the dielectric reactive termination monoblock, the at least two dielectric reactive termination resonators located on the printed circuit board, the at least two dielectric reactive termination resonators coupled respectively to two of the at least four RF signal input/output ports defined on said coupler and including at least two coupling capacitors; wherein the other two of the at least four RF signal input/output ports on said coupler are respectively coupled to one of the at least two RF signal input/output ports of said dielectric monoblock filter and one of said RF signal input/output transmission lines defined on said printed circuit board, the other of said RF signal input/output transmission lines defined on said printed circuit board being coupled to the other of said RF signal input/output ports defined on said dielectric monoblock band pass filter.