John W Leung

US Patent:

20120004005, Jan 5, 2012

Filed:

Aug 9, 2010

Appl. No.:

12/853131

Inventors:

Walid Ahmed - Tinton Falls NJ, US
John Leung - Irvine CA, US
Theodoros Georgantas - Chaidari, GR
Morten Damgaard - Laguna Hills CA, US
Nelson Sollenberger - Farmingdale NJ, US

International Classification:

H04B 7/00

US Classification:

455522

Abstract:

Aspects of a method and system for integrated blocker detection and automatic gain control are provided. In this regard, a communication device may generate one or more first signal strength indications based on a strength of a received signal at a first point in the analog front-end of the communication device. The communication device may generate one or more second signal strength indications based on a strength of the received signal at a second point in a digital processing module of the communication device. The first point in the analog front-end may be an input or an output of a down-conversion mixer. The second point in the digital processing module may be an output of an analog-to-digital converter or an output of a channel selection filter. The communication device may control, utilizing the first signal strength indication(s) and the second signal strength indication(s), a gain of one or more components of the communication device.

US Patent:

20200162114, May 21, 2020

Filed:

Oct 22, 2019

Appl. No.:

16/660672

Inventors:

- Woburn MA, US
David Richard PEHLKE - Westlake Village CA, US
John Chi-Shuen LEUNG - Foothill Ranch CA, US

International Classification:

H04B 1/00
H04L 5/00
H04B 7/08
H04L 27/00
H04B 1/18

Abstract:

Described herein are front-end architectures and wireless devices that support uplink carrier aggregation and simultaneous MIMO operations in a plurality of band combinations. The front-end architectures include a combination of low-band, mid-band, high-band, MIMO, and uplink carrier aggregation modules to provide the described functionality. The architectures include an antenna switch module coupled to a first antenna and to a second antenna. The architectures do not use mid-band and high-band switch combining. The architectures use low-band filters in diplexers or triplexers positioned before an antenna switch module.

US Patent:

20190149178, May 16, 2019

Filed:

Jan 10, 2019

Appl. No.:

16/244865

Inventors:

- Woburn MA, US
David Richard PEHLKE - Westlake Village CA, US
John Chi-Shuen LEUNG - Foothill Ranch CA, US

International Classification:

H04B 1/00
H04B 7/08
H04L 5/00
H04L 27/00
H04B 1/18

Abstract:

Described herein are front-end architectures and wireless devices that support uplink carrier aggregation and simultaneous MIMO operations in a plurality of band combinations. The front-end architectures include a combination of low-band, mid-band, high-band, MIMO, and uplink carrier aggregation modules to provide the described functionality. The architectures include an antenna switch module coupled to a first antenna and to a second antenna. The second antenna is coupled to the antenna switch module through a diplexer that combines high- and mid-band signals with low-band signals received from a low-band module, the low-band signals coupled to the diplexer without passing through the antenna switch module.

US Patent:

20190007073, Jan 3, 2019

Filed:

Sep 9, 2018

Appl. No.:

16/125708

Inventors:

- Woburn MA, US
David Richard PEHLKE - Westlake Village CA, US
John Chi-Shuen LEUNG - Foothill Ranch CA, US

International Classification:

H04B 1/00
H04L 5/00
H04L 27/00
H04B 7/08

Abstract:

Described herein are front-end architectures that use switch-combining in a MIMO module to provide uplink carrier aggregation and simultaneous MIMO operations in a plurality of band combinations. The front-end architectures include a combination of low-band, mid-band, high-band, MIMO, and uplink carrier aggregation modules to provide the described functionality. To provide certain band combinations, one or more of the modules can implement switchplexing to provide the targeted functionality.

US Patent:

20180019768, Jan 18, 2018

Filed:

Jul 17, 2017

Appl. No.:

15/652234

Inventors:

- Woburn MA, US
David Richard PEHLKE - Westlake Village CA, US
John Chi-Shuen LEUNG - Foothill Ranch CA, US

International Classification:

H04B 1/00
H04B 7/08
H04L 5/00

Abstract:

Disclosed herein are front-end architectures for wireless communication that support a wide range of combinations of uplink carrier aggregation (UL CA) and simultaneous multiple-input multiple-output (MIMO) functionality. Embodiments can include a separate mid-band power amplifier module and a separate high band power amplifier module, and can establish various numbers of antenna outputs from these modules to connect to available diplexers or triplexers in selected ways to cover all intended use cases. Duplication of filters, duplexers, and/or quadplexers is reduced or minimized by re-using filtering in a selectively designed MIMO receive module that supports switch-combined TX filters. A UL CA power amplifier module makes use of the MIMO receive module, as well as the re-use of available filters in the mid-band primary power amplifier module.