Acoustic wave filter
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorJungwoo SUNG
Life of this patent
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Abstract
An acoustic wave filter includes a first ladder filter, connected between a first port and a second port, including a first series resonator and a first shunt resonator; a first filter, connected between the first port and a first terminal of the first ladder filter, including a first inductor and a first capacitor connected in series to each other; and a second filter, connected between a second terminal of the first ladder filter and the second port, including a second inductor and a second capacitor connected in series to each other.
Claims15
An acoustic wave filter comprising:
- a first ladder filter, connected between a first port and a second port, comprising a first series resonator and a first shunt resonator;
- a first filter, connected between the first port and a first terminal of the first ladder filter, comprising a first inductor and a first capacitor connected in series to each other;
- and
- a second filter, connected between a second terminal of the first ladder filter and the second port, comprising a second inductor and a second capacitor connected in series to each other.
An acoustic wave filter comprising:
- a first series resonator connected between a first port and a second port;
- a first shunt resonator connected between a first node, disposed between the first port and the second port, and a ground;
- a first bandpass filter, comprising a first inductor and a first capacitor connected in series to each other between the first port and the first series resonator;
- and
- a second bandpass filter, comprising a second inductor and a second capacitor connected in series to each other between the first series resonator and the second port.
An acoustic wave filter comprising:
- a plurality of filters connected between a first port and a second port, wherein each of the plurality of filters comprises an inductor and a capacitor connected in series to each other;
- a plurality of ladder filters connected between the first port and the second port, wherein each of the plurality of ladder filters comprises a series resonator and a shunt resonator, and each of the plurality of ladder filters is connected between different adjacent ones of the plurality of filters;
- and
- each terminal of terminals of the plurality of filters is connected to one of the first port, the second port, a terminal of one of the plurality of ladder filters, or a terminal of an adjacent one of the plurality of filters.
Dependencies are inferred from the claim text.