Knowles Cazenovia, Inc.

David Bates

A printed film RF micros trip bandpass filter includes a plurality of resonators disposed on a dielectric substrate, first and second input/output (I/O) interfaces connected to corresponding first and second resonators flanking one or more intermediate resonators. Opposite ends of the one or more intermediate resonators are connected to a ground plane on an opposite side of the substrate by corresponding conductors. The intermediate resonators have an electrical wavelength that is one-half a wavelength of a center frequency of the filter and the first and second resonators can have an electrical wavelength that is nominally one-half the wavelength of the bandpass filter center frequency.

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Fayetteville, NY, United States of America

David Bates