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Filter circuit, duplexer and RF module
US8970320B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8970320-B2 |
| Application number | US-201113280530-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 25, 2011 |
| Priority date | Nov 17, 2010 |
| Publication date | Mar 3, 2015 |
| Grant date | Mar 3, 2015 |
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- Title
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Abstract
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A filter circuit includes a filter part connected between an input terminal and an output terminal and configured to have a passband, and a path connected in parallel with the filter part between the input terminal and the output terminal, the path having an impedance that enables a first signal passing through the path from the input terminal to the output terminal and a second signal passing through the filter part from the input terminal to the output terminal to have an opposite phase relationship in a frequency band outside of the passband and have almost equal amplitudes in the frequency band.
First claim
Opening claim text (preview).
What is claimed is: 1. A filter circuit comprising: a filter part connected between an input terminal and an output terminal and configured to have a passband; and a path connected in parallel with the filter part between the input terminal and the output terminal, the path having an impedance that enables a first signal passing through the path from the input terminal to the output terminal and a second signal passing through the filter part from the input terminal to the out…
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Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
- H03H9/725Primary
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8970320B2 cover?
- A filter circuit includes a filter part connected between an input terminal and an output terminal and configured to have a passband, and a path connected in parallel with the filter part between the input terminal and the output terminal, the path having an impedance that enables a first signal passing through the path from the input terminal to the output terminal and a second signal passing …
- Who is the assignee on this patent?
- Iwaki Masafumi, Tsutsumi Jun, Endo Yuki, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H03H9/725. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 03 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).