Nan Wu

US Patent:

20220294421, Sep 15, 2022

Filed:

Mar 7, 2022

Appl. No.:

17/653834

Inventors:

- Irvine CA, US
Nan Wu - Irvine CA, US
Tomoya Komatsu - Irvine CA, US

International Classification:

H03H 9/25
H03H 9/64

Abstract:

Aspects of this disclosure relate to multiplexers with acoustic wave resonators. The multiplexer includes a first filter and a second filter. The first filter includes a plurality of bulk acoustic wave resonators and a shunt surface acoustic wave resonator. The shunt acoustic wave resonator can have a resonant frequency in a passband of the second filter. The passband of the second filter is below a passband of the first filter. In certain applications, the first filter is a receive filter and the second filter is a transmit filter.

US Patent:

20220294422, Sep 15, 2022

Filed:

Mar 7, 2022

Appl. No.:

17/653847

Inventors:

- Irvine CA, US
Nan Wu - Irvine CA, US
Tomoya Komatsu - Irvine CA, US

International Classification:

H03H 9/64
H03H 9/25
H03H 9/72
H03F 3/19
H04B 1/40

Abstract:

Aspects of this disclosure relate to multiplexers with that include an acoustic wave resonator. The acoustic wave filter includes a plurality of acoustic wave resonators of a first type and a shunt acoustic wave resonator of a second type. The shunt acoustic wave resonator of the second type has lower second harmonic distortion than the acoustic wave resonators of the first type. The shunt acoustic wave resonator of the second type has a resonant frequency in a passband of another filter of the multiplexer. Related radio frequency modules, wireless communication devices, and methods are also disclosed.

US Patent:

20220294423, Sep 15, 2022

Filed:

Mar 7, 2022

Appl. No.:

17/653850

Inventors:

- Irvine CA, US
Nan Wu - Irvine CA, US
Tomoya Komatsu - Irvine CA, US

International Classification:

H03H 9/64
H03H 9/25
H03H 9/02
H04B 1/00

Abstract:

Aspects of this disclosure relate to acoustic wave filter. The acoustic wave filter can include different types of acoustic wave resonators. The acoustic wave filter can include shunt acoustic wave resonator that has lower second harmonic distortion than other acoustic wave resonators of the acoustic wave filter. In certain embodiments, the shunt acoustic wave resonator can be a surface acoustic wave resonator. Related multiplexers, radio frequency modules, wireless communication devices, and methods are also disclosed.

US Patent:

20220209747, Jun 30, 2022

Filed:

Dec 13, 2021

Appl. No.:

17/549629

Inventors:

- Irvine CA, US
Jiansong Liu - Fremont CA, US
Nan Wu - Irvine CA, US

International Classification:

H03H 9/54
H03H 9/17
H03H 9/13
H03H 9/02

Abstract:

A filter is disclosed. The filter can be a band pass filter or a band rejection filter. The filter can have bulk acoustic wave resonators. The filter can include a shunt bulk acoustic wave resonator and a series bulk acoustic wave resonator. The shunt bulk acoustic wave resonator and the series bulk acoustic wave resonator include different raised frame structures. The different raised frame structures contribute to one of the shunt bulk acoustic wave resonator or the series bulk acoustic wave resonator to have a higher quality factor below a resonant frequency than the other.

US Patent:

20220209749, Jun 30, 2022

Filed:

Dec 13, 2021

Appl. No.:

17/549511

Inventors:

- Irvine CA, US
Jiansong Liu - Fremont CA, US
Nan Wu - Irvine CA, US

International Classification:

H03H 9/64
H03H 9/62

Abstract:

A filter with bulk acoustic wave devices is disclosed. The filter includes a first bulk acoustic wave resonator and a second bulk acoustic wave resonator. The first bulk acoustic wave resonator includes a first raised frame structure. The first raised frame structure is a multi-layer raised frame structure. The second bulk acoustic wave resonator includes a second raised frame structure. The first raised frame structure has at least one more raised frame layer than the second raised frame structure.

US Patent:

20210126619, Apr 29, 2021

Filed:

Oct 23, 2020

Appl. No.:

17/079137

Inventors:

- Irvine CA, US
Jiansong Liu - Irvine CA, US
Li Chen - Irvine CA, US
Nan Wu - Irvine CA, US
Toru Jibu - Irvine CA, US

International Classification:

H03H 9/25
H03H 9/02
H03H 9/64
H04B 1/00

Abstract:

Aspects of this disclosure relate to acoustic wave filters that include different types of acoustic wave resonators for series resonators and shunt resonators. In certain embodiments, an acoustic wave filter includes series temperature compensated surface acoustic wave resonators and shunt bulk acoustic wave resonators. Such an acoustic wave filter can be a band pass filter.

US Patent:

20210126625, Apr 29, 2021

Filed:

Oct 23, 2020

Appl. No.:

17/079024

Inventors:

- Irvine CA, US
Jiansong Liu - Irvine CA, US
Li Chen - Irvine CA, US
Nan Wu - Irvine CA, US
Toru Jibu - Irvine CA, US

International Classification:

H03H 9/64
H03H 9/25
H03H 9/68
H03H 9/145
H03H 9/72
H03H 9/70

Abstract:

Aspects of this disclosure relate to acoustic wave filters that include different types of acoustic wave resonators for series resonators and shunt resonators. In certain embodiments, an acoustic filter component includes a first die including surface acoustic wave resonators and a second die including bulk acoustic wave resonators. An interdigital transducer electrode of a surface acoustic wave resonator can be a side of the first die. An electrode of a bulk acoustic wave resonator can be on a side of the second die facing the side of the first die with the interdigital transducer electrode thereon. An acoustic wave filter can include series resonators on one of the first and second die and shunt resonators on the other of the first and second die.

US Patent:

20210105005, Apr 8, 2021

Filed:

Dec 18, 2020

Appl. No.:

17/126726

Inventors:

- Woburn MA, US
Tomoya Komatsu - Irvine CA, US
Abhishek Dey - Greensboro NC, US
Nan Wu - Irvine CA, US
Stephane Richard Marie Wloczysiak - Irvine CA, US

International Classification:

H03H 9/70
H03H 9/17
H03H 9/02
H03H 9/56
H03H 9/05
H03F 3/19
H03H 3/02
H03H 9/10

Abstract:

Bulk acoustic wave resonators of two or more different filters can be on a common die. The two filters can be included in a multiplexer, such as a duplexer, or implemented as standalone filters. With bulk acoustic wave resonators of two or more filters on the same die, the filters can be implemented in less physical space compared to implementing the same filters of different die. Related methods, radio frequency systems, radio frequency modules, and wireless communication devices are also disclosed.