Filter device, high-frequency module, and communication device
AssigneeMurata Manufacturing Co., Ltd.
InventorKouichi Ueno
Life of this patent
Estimating the term…
Abstract
A transmission filter is arranged in a first filter region and has one or more acoustic wave resonators, a plurality of terminal electrodes, and a plurality of wires. A reception filter is arranged in a second filter region and has one or more acoustic wave resonators, a plurality of terminal electrodes, and a plurality of wires. The first filter region and the second filter region are arranged adjacently to each other and have at least sides constituting a pair and opposing to each other. At least either one of the first filter region and the second filter region has no wire extending along one side in a forbidden region that is defined by a width including a terminal electrode nearest to the one side, along the one side and over the one side opposing to the other filter region.
Claims19
A filter device comprising:
- a first filter and a second filter arranged adjacently to each other, wherein
- each of the first filter and the second filter has one or more resonators, a plurality of terminal electrodes, and a plurality of wires connected to at least one terminal electrode out of the plurality of terminal electrodes,
- the first filter is arranged in a first filter region, the second filter is arranged in a second filter region, and the first filter region and the second filter region are arranged adjacently to each other and have at least one pair of sides opposing to each other, and
- one or both of the first filter region and the second filter region has a forbidden region, wherein the forbidden region is present along and extended over one side of the pair of sides, and has a width large enough to include a terminal electrode nearest to the one side among the plurality of terminal electrodes, wherein no wire present in the forbidden region extends in a direction along a length of the one side.
Dependencies are inferred from the claim text.