Wei D Liu

Author:

Wei Liu

ISBN #:

0738494682

Author:

Wei Liu

ISBN #:

7532608522

Author:

Wei Liu

ISBN #:

7800877884

US Patent:

20230023111, Jan 26, 2023

Filed:

Jul 11, 2022

Appl. No.:

17/811656

Inventors:

- Irvine CA, US
Wei Liu - Irvine CA, US
Abhishekh Devaraj - Irvine CA, US
Sachin Nagarajan - Irvine CA, US
Kiran Tej Thoomu - Irvine CA, US
Christopher Song - Norwalk CA, US
Yunyoung Choi - Irvine CA, US

International Classification:

H03F 1/26
H03F 3/193
H03G 3/30

Abstract:

Apparatus and methods for biasing of low noise amplifiers (LNAs) are provided herein. In certain embodiments, an LNA includes at least one transistor that amplifies a radio frequency (RF) input signal, and a bias circuit including a current bias circuit that generates a bias current based on a reference current and a voltage bias circuit that generates at least one input bias voltage for the at least one transistor based on the bias current. The current bias circuit includes a first bias transistor that receives the reference current, a second bias transistor that generates the bias current, and an amplifier that controls a first bias voltage of the first bias transistor to match a second bias voltage of the second bias transistor.

US Patent:

20210109101, Apr 15, 2021

Filed:

May 27, 2020

Appl. No.:

16/884737

Inventors:

- La Jolla CA, US
- Cold Spring Harbor NY, US
Anders Carlsson - Los Angeles CA, US
Wei Liu - Chandler AZ, US
Jim Hicks - Lattingtown NY, US

International Classification:

G01N 33/574

Abstract:

The present invention provides methods for predicting response to a hormone-directed therapy or chemotherapy in a prostate cancer (PCa) patient comprising (a) performing a direct analysis comprising immunofluorescent staining and morphological characteristization of nucleated cells in a blood sample obtained from the patient to identify and enumerate circulating tumor cells (CTC); (b) individually characterizing genotypic, morphometric and protein expression parameters to generate a profile for each of the CTCs, and (c) predicting response to hormone-directed therapy in the prostate cancer PCa patient based on said profile. In some embodiments, the methods comprise repeating steps (a) through (c) at one or more timepoints after initial diagnosis of prostate cancer to sequentially monitor said genotypic, morphometric and protein expression parameters.

US Patent:

20180067344, Mar 8, 2018

Filed:

Aug 29, 2017

Appl. No.:

15/690240

Inventors:

- Monterey Park CA, US
Cheng-Chih Kung - San Gabriel CA, US
Jacob Levy - Sierre Madre CA, US
Wei Qian - Torrance CA, US
Wei Liu - West Hollywood CA, US
Mehdi Asghari - Pasadena CA, US

International Classification:

G02F 1/025
G02F 1/01
G02F 1/015

Abstract:

The optical device includes a waveguide positioned on a base and a modulator positioned on the base. The modulator includes a ridge of an electro-absorption medium having a top side and a lateral side. The lateral side is between the top side and the base and the top side has a width. The waveguide is configured to guide a light signal through the modulator such that the light signal is guided through the ridge of electro-absorption medium. A heater is positioned over the lateral side of the electro-absorption medium without being positioned over the entire width of the ridge.

US Patent:

20170269391, Sep 21, 2017

Filed:

Mar 16, 2016

Appl. No.:

15/072154

Inventors:

- Monterey Park CA, US
Cheng-Chih Kung - San Gabriel CA, US
Jacob Levy - Sierre Madre CA, US
Wei Qian - Torrance CA, US
Wei Liu - West Hollywood CA, US
Mehdi Asghari - Pasadena CA, US

International Classification:

G02F 1/025
G02F 1/01

Abstract:

The optical device includes a waveguide positioned on a base and a modulator positioned on the base. The modulator includes a ridge of an electro-absorption medium having a top side and a lateral side. The lateral side is between the top side and the base and the top side has a width. The waveguide is configured to guide a light signal through the modulator such that the light signal is guided through the ridge of electro-absorption medium. A heater is positioned over the lateral side of the electro-absorption medium without being positioned over the entire width of the ridge.