Radio frequency module and communication device
AssigneeMurata Manufacturing Co., Ltd.
InventorKatsuya Ikegami
Life of this patent
Estimating the term…
Abstract
A radio frequency module (1) includes a first switch (4), an attenuation filter (3), and a plurality of band pass filters (12A to 12C, 22A to 22C). The first switch (4) is a switch that is capable of simultaneously connecting a common terminal (40) to selection terminals (41, 42) out of a plurality of selection terminals (41 to 43). The plurality of band pass filters (12A to 12C, 22A to 22C) include a first band pass filter (22A) and a second band pass filter (22B). The attenuation filter (3) includes at least one reactive element out of an inductive element and a capacitive element. In the radio frequency module (1), the reactive element is adjacent to at least one band pass filter out of the plurality of band pass filters (12A to 12C, 22A to 22C).
Claims20
A radio frequency module comprising:
- a mounting board;
- a switch mounted on the mounting board and having a common terminal connected to an antenna terminal and a plurality of selection terminals configured to be connected to the common terminal, the switch being configured to simultaneously connect the common terminal to at least a first selection terminal and a second selection terminal out of the plurality of selection terminals;
- an attenuation filter mounted on the mounting board and connected between the common terminal and the antenna terminal;
- and
- a plurality of band pass filters mounted on the mounting board and connected to the plurality of selection terminals,
- wherein:
- the plurality of band pass filters comprises:
- a first band pass filter connected to the first selection terminal and having a pass band in a first frequency band and
- a second band pass filter connected to the second selection terminal and having a pass band in a second frequency band, which is higher than the first frequency band,
- the attenuation filter is a low pass filter or a notch filter including at least one reactive element out of an inductive element and a capacitive element, and
- the reactive element is adjacent to at least one band pass filter out of the plurality of band pass filters when the mounting board is viewed in a plan view.
A radio frequency module comprising:
- a mounting board;
- a switch mounted on the mounting board and having a common terminal connected to an antenna terminal and a plurality of selection terminals configured to be connected to the common terminal, the switch being configured to simultaneously connect the common terminal to at least a first selection terminal and a second selection terminal out of the plurality of selection terminals;
- an attenuation filter mounted on the mounting board and connected between the common terminal and the antenna terminal;
- a plurality of band pass filters mounted on the mounting board and connected to the plurality of selection terminals;
- and
- a plurality of inductors connected to the plurality of band pass filters between the plurality of band pass filters and the switch,
- wherein:
- the plurality of band pass filters comprises:
- a first band pass filter connected to the first selection terminal and having a pass band in a first frequency band and
- a second band pass filter connected to the second selection terminal and having a pass band in a second frequency band, which is higher than the first frequency band,
- the attenuation filter is a low pass filter or a notch filter including at least one reactive element out of an inductive element and a capacitive element, and
- the reactive element is adjacent to at least one inductor out of the plurality of inductors when the mounting board is viewed in a plan view.
Dependencies are inferred from the claim text.