Reactance Filter Comprising Acoustic Waves Resonators
US-2015365069-A1 · Dec 17, 2015 · US
Ladder filter, duplexer and module
US9035722B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9035722-B2 |
| Application number | US-201213454940-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 24, 2012 |
| Priority date | Apr 27, 2011 |
| Publication date | May 19, 2015 |
| Grant date | May 19, 2015 |
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Abstract
Official abstract text for this publication.
A ladder filter includes at least one series resonator connected in series between an input terminal and an output terminal, at least one parallel resonator connected in parallel with the at least one series resonator, an additional resonator connected in series between the at least one series resonator and one of the input terminal and the output terminal, and an inductor connected in series to the additional resonator, the additional resonator having a resonance frequency higher than an anti-resonance frequency of the at least one series resonator.
First claim
Opening claim text (preview).
What is claimed is: 1. A ladder filter comprising: at least one series resonator connected in series between an input terminal and an output terminal; at least one parallel resonator connected in parallel with the at least one series resonator; an additional resonator connected in series between the at least one series resonator and one of the input terminal and the output terminal; and an inductor connected in series to the additional resonator, the additional resonator h…
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Classifications
- H03H9/542Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9035722B2 cover?
- A ladder filter includes at least one series resonator connected in series between an input terminal and an output terminal, at least one parallel resonator connected in parallel with the at least one series resonator, an additional resonator connected in series between the at least one series resonator and one of the input terminal and the output terminal, and an inductor connected in series t…
- Who is the assignee on this patent?
- Hara Motoaki, Inoue Shogo, Tsutsumi Jun, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification H03H9/542. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 19 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).