Filter devices having improved attenuation characteristics
AssigneeSkyworks Filter Solutions Japan Co., Ltd.
InventorsRei Goto, Joji Fujiwara, Tetsuya Tsurunari, Hiroyuki Nakamura
Life of this patent
Estimating the term…
Loading patent…
AssigneeSkyworks Filter Solutions Japan Co., Ltd.
InventorsRei Goto, Joji Fujiwara, Tetsuya Tsurunari, Hiroyuki Nakamura
Estimating the term…
A filter device having improved attenuation and isolation characteristics. In one example the filter device has a common terminal, a first terminal, and a second terminal, and includes a first filter connected between the common terminal and the first terminal, a second filter connected between the common terminal and the second terminal, and an additional circuit including at least three IDT electrodes each connected to a respective one of a corresponding at least three connection points within the filter device, the at least three connection points being selected from a group consisting of the common terminal, the first terminal, the second terminal, a first node disposed between the plurality of first filter elements along a path extending between the common terminal and the first terminal, and a second node disposed between the plurality of second filter elements along a path extending between the common terminal and the second terminal.
A filter device having a common terminal, a first terminal, and a second terminal, the filter device comprising:
A communications device comprising:
Dependencies are inferred from the claim text.