Guohao Zhang resumes & CV records
Resumes
Guohao Zhang, 6054 Stetson, Irvine, CA 92602
Guohao Zhang Phones & Addresses
Irvine, CA
Round Rock, TX
2161 Via Arandana, Camarillo, CA 93012 805-3836716
719 Paseo Camarillo APT 143, Camarillo, CA 93010
Saint Charles, IL
Ventura, CA
11 Vispera, Irvine, CA 92620
Social networks
Guohao Zhang
Linkedin
Work
Position:
Service Occupations
Education
Degree:
Associate degree or higher
Mentions for Guohao Zhang
Publications & IP owners
Us Patents
Multi-Mode High Efficiency Linear Power Amplifier
US Patent:
8049565, Nov 1, 2011
Filed:
Jan 6, 2011
Appl. No.:
12/985373
Inventors:
Guohao Zhang - Camarillo CA, US
Shiaw W. Chang - Thousand Oaks CA, US
Xuejun Chen - Moorpark CA, US
Jing Sun - Moorpark CA, US
Shiaw W. Chang - Thousand Oaks CA, US
Xuejun Chen - Moorpark CA, US
Jing Sun - Moorpark CA, US
Assignee:
Skyworks Solutions, Inc. - Woburn MA
International Classification:
H03F 3/68
US Classification:
330295
Abstract:
A power amplifier includes a plurality of amplification paths in which at least one amplification path is selectively enables and disabled, wherein each amplification path includes an output impedance modification element and a phase shift element that is operable independently from the output impedance modification element, and wherein the output impedance modification element in each amplification path provides selective impedance for each amplification path.
Multi-Mode High Efficiency Linear Power Amplifier
US Patent:
8421539, Apr 16, 2013
Filed:
Oct 31, 2011
Appl. No.:
13/285276
Inventors:
Guohao Zhang - Irvine CA, US
Shiaw W. Chang - Thousand Oaks CA, US
Xuejun Chen - Moorpark CA, US
Jing Sun - Moorpark CA, US
Shiaw W. Chang - Thousand Oaks CA, US
Xuejun Chen - Moorpark CA, US
Jing Sun - Moorpark CA, US
Assignee:
Skyworks Solutions, Inc. - Woburn MA
International Classification:
H03F 3/68
US Classification:
330295, 330124 R, 330 51
Abstract:
A power amplifier includes a plurality of amplification paths in which at least one amplification path is selectively enabled and disabled, wherein each amplification path includes an output impedance modification element and an output phase shift element that is operable independently from the output impedance modification element, and wherein the output impedance modification element in each amplification path provides selective impedance for each amplification path.
Multi-Mode Power Amplifier
US Patent:
8634789, Jan 21, 2014
Filed:
Nov 9, 2012
Appl. No.:
13/672981
Inventors:
Xuejun Chen - Moorpark CA, US
Guohao Zhang - Irvine CA, US
Jing Sun - Portland OR, US
Piyou Zhang - Aloha OR, US
Jinim Won - Santa Clarita CA, US
Guohao Zhang - Irvine CA, US
Jing Sun - Portland OR, US
Piyou Zhang - Aloha OR, US
Jinim Won - Santa Clarita CA, US
Assignee:
Skyworks Solutions, Inc. - Woburn MA
International Classification:
H04B 1/06
US Classification:
4552421, 455571, 330295
Abstract:
A multi-mode power amplifier includes a high-power mode amplifier circuit, a mid-power mode amplifier circuit, and a low power amplifier circuit, where the low-power mode amplifier circuit comprises a plurality of independently selectable power cell/amplifier branches. The multi-mode power amplifiers selectively enable or disable amplifier branches to provide multiple levels of amplification. Selectively enabling certain of a plurality of split collector amplifier branches provides multiple low power and ultra-low power amplifier modes without the impedance mismatch or board layout problems associated with an RF switch.
Multi-Mode High Efficiency Linear Power Amplifier
US Patent:
2009019, Aug 6, 2009
Filed:
Nov 18, 2008
Appl. No.:
12/273093
Inventors:
Guohao Zhang - Camarillo CA, US
Shiaw W. Chang - Thousand Oaks CA, US
Xuejun Chen - Moorpark CA, US
Jing Sun - Moorpark CA, US
Shiaw W. Chang - Thousand Oaks CA, US
Xuejun Chen - Moorpark CA, US
Jing Sun - Moorpark CA, US
International Classification:
H03F 3/68
US Classification:
330295
Abstract:
A power amplifier includes a plurality of amplification paths in which at least one amplification path is selectively enabled and disabled, wherein each amplification path includes an output impedance modification element and an output phase shift element that is operable independently from the output impedance modification element, and wherein the output impedance modification element in each amplification path provides selective impedance for each amplification path.
Self Compensated Directional Coupler
US Patent:
2012001, Jan 26, 2012
Filed:
Sep 22, 2010
Appl. No.:
12/887789
Inventors:
Guohao Zhang - Irvine CA, US
Anil Agarwal - Ladera Ranch CA, US
Anil Agarwal - Ladera Ranch CA, US
International Classification:
H01P 5/18
US Classification:
333116
Abstract:
A self-compensated strip-coupled directional coupler. In one example, the self-compensated directional coupler includes a main arm formed in a single first layer of a multi-layer substrate, and a coupled arm formed in a single second layer of the multi-layer substrate. One of the coupled arm and the main arm includes a zigzag structure to compensate for misalignment between the first and second layers that can occur during manufacturing.
Reducing Coupling Coefficient Variation By Using Capacitors
US Patent:
2012003, Feb 9, 2012
Filed:
Jul 29, 2011
Appl. No.:
13/194864
Inventors:
Yang Li - Woburn MA, US
Xuanang Zhu - Nashua NH, US
Guohao Zhang - Irvine CA, US
Russ Reisner - Newbury Park CA, US
Dmitri Prikhodko - Reading MA, US
Bradley D. Scoles - Irvine CA, US
David Viveiros, JR. - Newbury Park CA, US
Xuanang Zhu - Nashua NH, US
Guohao Zhang - Irvine CA, US
Russ Reisner - Newbury Park CA, US
Dmitri Prikhodko - Reading MA, US
Bradley D. Scoles - Irvine CA, US
David Viveiros, JR. - Newbury Park CA, US
Assignee:
SKYWORKS SOLUTIONS, INC. - Woburn MA
International Classification:
H01L 25/00
H01R 43/00
H01P 5/12
H01R 43/00
H01P 5/12
US Classification:
327564, 333136, 29854
Abstract:
A coupler is presented that has high-directivity and low coupling coefficient variation. The coupler includes a first trace associated with a first port and a second port. The first port is configured substantially as an input port and the second port is configured substantially as an output port. The coupler further includes a second trace associated with a third port and a fourth port. The third port is configured substantially as a coupled port and the fourth port is configured substantially as an isolated port. In addition, the coupler includes a first capacitor configured to introduce a discontinuity to induce a mismatch in the coupler.
Reducing Coupling Coefficient Variation By Using Angled Connecting Traces
US Patent:
2012003, Feb 16, 2012
Filed:
Jul 29, 2011
Appl. No.:
13/194863
Inventors:
Yang Li - Woburn MA, US
Xuanang Zhu - Nashua NH, US
Guohao Zhang - Irvine CA, US
Russ Reisner - Newbury Park CA, US
Dmitri Prikhodko - Reading MA, US
Bradley D. Scoles - Irvine CA, US
David Viveiros, JR. - Newbury Park CA, US
Xuanang Zhu - Nashua NH, US
Guohao Zhang - Irvine CA, US
Russ Reisner - Newbury Park CA, US
Dmitri Prikhodko - Reading MA, US
Bradley D. Scoles - Irvine CA, US
David Viveiros, JR. - Newbury Park CA, US
Assignee:
SKYWORKS SOLUTIONS, INC. - Woburn MA
International Classification:
H01P 5/18
H01R 43/20
H01R 43/20
US Classification:
333109, 29876
Abstract:
A coupler is presented that has high-directivity and low coupling coefficient variation. The coupler includes a first trace associated with a first port and a second port. The first trace includes a first main arm, a first connecting trace connecting the first main arm to the second port, and a non-zero angle between the first main arm and the first connecting trace. Further, the coupler includes a second trace associated with a third port and a fourth port. The second trace includes a second main arm.
Reducing Coupling Coefficient Variation Using Intended Width Mismatch
US Patent:
2012003, Feb 16, 2012
Filed:
Jul 29, 2011
Appl. No.:
13/194876
Inventors:
Yang Li - Woburn MA, US
Xuanang Zhu - Nashua NH, US
Guohao Zhang - Irvine CA, US
Russ A. Reisner - Newbury Park CA, US
Dimitri Prikhodko - Reading MA, US
Bradley D. Scoles - Irvine CA, US
David Viveiros, JR. - Newbury Park CA, US
Xuanang Zhu - Nashua NH, US
Guohao Zhang - Irvine CA, US
Russ A. Reisner - Newbury Park CA, US
Dimitri Prikhodko - Reading MA, US
Bradley D. Scoles - Irvine CA, US
David Viveiros, JR. - Newbury Park CA, US
Assignee:
SKYWORKS SOLUTIONS, INC. - Woburn MA
International Classification:
H01P 3/08
B23P 17/00
B23P 17/00
US Classification:
333204, 295921
Abstract:
A coupler is presented that has high-directivity and low coupling coefficient variation. The coupler includes a first trace with a first edge substantially parallel to a second edge and substantially equal in length to the second edge. The first trace includes a third edge substantially parallel to a fourth edge. The fourth edge is divided into three segments. The outer segments are a first distance from the third edge. The middle segment is a second distance from the third edge. Further, the coupler includes a second trace, which includes a first edge substantially parallel to a second edge and substantially equal in length to the second edge. The second trace includes a third edge substantially parallel to a fourth edge. The fourth edge is divided into three segments. The outer segments are a first distance from the third edge. The middle segment is a second distance from the third edge.
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