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US 2011/0300820 A1Published application
High-frequency module
AssigneeMurata Manufacturing Co., Ltd.
InventorTakanori UEJIMA
Life of this patent
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Abstract
A high-frequency module includes a switch IC. An antenna filter is connected to a common terminal of the switch IC and arranged adjacent to an antenna. The antenna filter is a low-pass filter whose attenuation band includes higher harmonic frequency bands of GSM1800/GSM1900 transmission signals and TDS-CDMA transmission signals. An individual-terminal filter is connected to one individual terminal of the switch IC. The individual-terminal filter is a low-pass filter whose attenuation band includes higher harmonic frequency bands of GSM850/GSM900 transmission signals.
Claims6
A high-frequency module comprising:
- a switch integrated circuit arranged to switch a connection between a common terminal to be connected to an antenna and a plurality of individual terminals, a plurality of transmission signals having different frequency bands being input into corresponding ones of the plurality of individual terminals;
- wherein
- an antenna filter is connected to the common terminal of the switch integrated circuit;
- and
- an attenuation band of the antenna filter includes higher harmonic frequency bands of at least two of the plurality of transmission signals.
2 more elements
Dependencies are inferred from the claim text.