Patent ID: 6329890
Filing Date: 2001-12-11
Classification: H01P,H03H

Abstract:
Modular thin film filter apparatus comprising:a) a plurality of signal layers, each including at least one distributed impedance signal conductor deposited on a first surface of a dielectric substrate and wherein a ground strip conductor circumscribes each of said signal conductors at said first surface;b) a plurality of ground plane layers, each including a conductor deposited on a first surface of a dielectric substrate to substantially cover the first surface, wherein a ground strip conductor circumscribes said ground plane conductors at said first surface, and wherein said ground plane layers are interleaved between said plurality of signal layers such that the thickness of a substrate separates each signal conductor and ground plane conductor from each signal conductor and ground plane conductor at an adjoining layer;c) a plurality of apertures that extend through each of said substrates and are displaced about said signal and cover layers and aligned to couple said signal conductors, said ground strip conductors and said ground plane conductors together; andd) termination means for coupling electrical signals to said signal conductors, said ground strip conductors, and said ground plane conductors.