RF FILTER AND METHOD OF DESIGNING AN RF FILTER

RF FILTER AND METHOD OF DESIGNING AN RF FILTER

A filter and a method for forming a filter are disclosed. In an embodiment a filter includes a first port, a second port and a signal path between the first port and the second port. The filter further includes a plurality of series resonators electrically connected in series in the signal path, a p...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SHEVELOV, Mykola, SEVSKIY, Georgiy, GAVRYLIUK, Oleksandr, KOMAKHA, Petro, CHERNYAKOV, Alexander, WONG, Wai San
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
RESONATORS
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Beschreibung
Zusammenfassung:A filter and a method for forming a filter are disclosed. In an embodiment a filter includes a first port, a second port and a signal path between the first port and the second port. The filter further includes a plurality of series resonators electrically connected in series in the signal path, a plurality of shunt paths, each electrically connecting the signal path to ground and one parallel resonator electrically connected in each shunt path, wherein at least one series resonator is an electroacoustic resonator, and wherein at least one parallel resonator comprises one acoustically inactive capacitor or an electrical connection of an acoustically active resonator and a de-tuning coil.