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公开(公告)号：US20210351800A1
公开(公告)日：2021-11-11
申请号：US17382487
申请日：2021-07-22
摘要： To achieve space saving and a reduction in cost. A radio-frequency module includes a band pass filter, a first low noise amplifier, a second low noise amplifier, and an attenuation filter. The band pass filter has an output terminal and allows the passage of a first reception signal and a second reception signal. The first low noise amplifier is connected to the output terminal of the band pass filter and amplifies the first reception signal. The second low noise amplifier is connected to the output terminal of the band pass filter and amplifies the second reception signal. The attenuation filter is provided on a common path between the output terminal of the band pass filter and the first low noise amplifier and between the output terminal of the band pass filter and the second low noise amplifier.
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公开(公告)号：US20240113848A1
公开(公告)日：2024-04-04
申请号：US18538304
申请日：2023-12-13
CPC分类号： H04L5/14 , H03H9/145 , H03H9/25 , H03H9/6483
摘要： In a high frequency module, a plurality of filters is connected to an antenna terminal with a switch interposed. The plurality of filters includes a first filter that has a pass band including a frequency band of a first communication band and a second filter that has a pass band including a frequency band of a second communication band that is capable of simultaneous communication with the first communication band. A first electronic component having the first filter and a second antenna end resonator of the second filter is disposed on a first principal surface of the mounting substrate. A second electronic component having at least one second acoustic wave resonator other than a second antenna end resonator of the second filter is disposed on the first principal surface of the mounting substrate.
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公开(公告)号：US20240106413A1
公开(公告)日：2024-03-28
申请号：US18527826
申请日：2023-12-04
CPC分类号： H03H9/58 , H05K1/0243 , H05K2201/1003 , H05K2201/1006 , H05K2201/10098
摘要： The deterioration in characteristics of a filter is reduced. In a high frequency module, the filter includes a first substrate, a first functional electrode provided on the first substrate and forming a part of an antenna end resonator, a second substrate separate from the first substrate, and a second functional electrode provided on the second substrate and forming a part of at least one acoustic wave resonator other than the antenna end resonator among a plurality of acoustic wave resonators. A first electronic component including the first substrate and the first functional electrode is disposed on the first main surface of the mounting substrate. An inductor is adjacent to the first electronic component in a plan view from a thickness direction of the mounting substrate. The inductor does not overlap the antenna end resonator in a side view from a direction of a winding axis of a winding portion.
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公开(公告)号：US20240364307A1
公开(公告)日：2024-10-31
申请号：US18766887
申请日：2024-07-09
发明人： Takashi IWAMOTO , Motoji TSUDA , Hiroshi SOMADA , Eiji FUJIMORI , Masaki KASAI , Takuma KUROYANAGI , Shinichiro TAKAYANAGI
摘要： A duplexer includes a piezoelectric substrate including an upper surface and a lower surface, a functional element on the lower surface, a flat plate electrode on a side of the upper surface of the piezoelectric substrate, and a dielectric portion that is located between the functional element and the flat plate electrode and has a permittivity lower than a permittivity of the piezoelectric substrate.
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