Surface mount ceramic filter duplexer having reduced input/output coupling and adjustable high-side transmission zeroes

Surface mount ceramic filter duplexer having reduced input/output coupling and adjustable high-side transmission zeroes

A ceramic bandpass filter (10) with improved input/output isolation can be surface mounted. Input/output pads (18 and 2) through which electrical signals pass are located on one surface of a block of dielectric material (12) to permit use of the so-called surface mount manufacturing techniques. Slot...

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Bibliographische Detailangaben
Hauptverfasser: KRAUSE, JOSEPH P, SOKOLA, RAYMOND L
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
TRANSMISSION
WAVEGUIDES
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Beschreibung
Zusammenfassung:A ceramic bandpass filter (10) with improved input/output isolation can be surface mounted. Input/output pads (18 and 2) through which electrical signals pass are located on one surface of a block of dielectric material (12) to permit use of the so-called surface mount manufacturing techniques. Slots in the sides of the block that preferably run between the input-output pads can reduce coupling between the input/output pads and permit adjustment of high-side transmission zeroes by changing the dimensions of the slots. No wired connections to the ceramic bandpass filter block are required.