Joshua U Cho, 6412927 Oakwood Ln, La Mirada, CA 90638

7898230, Mar 1, 2011

May 26, 2009

12/471515

Joshua Cho - Irvine CA, US
Pete Good - Dana Point CA, US

Skyworks Solutions, Inc. - Woburn MA

G05F 1/40
G05F 5/00

323273, 323303

An integrated circuit assembly includes a voltage level generator, a level shifter, a bandgap reference generator and a voltage regulator. The voltage level generator generates output voltage level signals in response to a supply voltage. The level shifter receives the output voltage level signals from the voltage level generator and generates first and second sets of control signals. The bandgap reference generator receives a reference voltage input and generates a bandgap reference signal. The voltage regulator receives a supply voltage, the bandgap reference signal the first and second sets of control signals from the level shifter and generates a constant output voltage under varying circuit conditions.

2008026, Oct 30, 2008

Apr 27, 2007

11/740965

Joshua Cho - Irvine CA, US
Pete Good - Dana Point CA, US

G05F 1/40

323280

An integrated circuit assembly includes a voltage level generator, a level shifter, a bandgap reference generator and a voltage regulator. The voltage level generator generates output voltage level signals in response to a supply voltage. The level shifter receives the output voltage level signals from the voltage level generator and generates first and second sets of control signals. The bandgap reference generator receives a reference voltage input and generates a bandgap reference signal. The voltage regulator receives a supply voltage, the bandgap reference signal the first and second sets of control signals from the level shifter and generates a constant output voltage under varying circuit conditions.

2021014, May 13, 2021

Oct 13, 2020

17/069745

- Irvine CA, US
Junhyung Lee - Irvine CA, US
Joshua Haeseok Cho - Irvine CA, US
Aravind Kumar Padyana - Costa Mesa CA, US
Bipul Agarwal - Irvine CA, US

H04B 1/40
H04B 7/08

Described herein are methods for amplifying radio-frequency signals using a variable-gain amplifier with a plurality of input nodes. The methods provide a plurality of gain modes with a low gain mode or bypass mode that follows a bypass path through the variable-gain amplifier and a plurality of higher gain modes that take advantage of tailored impedances for particular gain modes. The tailored impedances can be configured to improve linearity of the amplification process in targeted gain modes. The methods can selectively couple the bypass path to a reference potential node in the plurality of higher gain modes and can selectively decouple the input nodes from a degeneration switching block in the bypass mode.

2021011, Apr 15, 2021

Oct 6, 2020

17/064509

- Irvine CA, US
Rimal Deep Singh - Irvine CA, US
Johannes Jacobus Emile Maria Hageraats - Kamuela HI, US
Joshua Haeseok Cho - Irvine CA, US
Bipul Agarwal - Irvine CA, US
Aravind Kumar Padyana - Costa Mesa CA, US

H03G 3/30
H03F 1/22
H03G 1/00
H03G 3/00
H04B 7/08
H03F 1/56
H03F 3/193

Described herein are variable gain amplifiers and multiplexers that embed programmable attenuators into switchable paths to provide variable gain for individual amplifier inputs. The variable gain for an individual input is provided using an amplification stage that is common for each input of the amplifier. A variable attenuation is provided for individual inputs through a combination of a band selection switch and an attenuation selection branch. Individual inputs can be configured to bypass the variable attenuation in a high gain mode.

2020014, May 7, 2020

Jan 7, 2020

16/736777

- Woburn MA, US
Junhyung Lee - Irvine CA, US
Joshua Haeseok Cho - Irvine CA, US
Aravind Kumar Padyana - Costa Mesa CA, US
Bipul Agarwal - Irvine CA, US

H04B 1/40
H04B 7/08

Described herein are variable-gain amplifier configurations that include a multi-input gain stage, a cascode buffer, and a bypass block. Degeneration switching blocks can be used for the entire multi-input gain stage or for individual input nodes of the multi-input gain stage. This advantageously reduces or eliminates performance penalties in one or more gain modes. The variable impedances can be configured to improve linearity of the amplification process in targeted gain modes. The variable gain amplifier can be configured to provide a low-loss bypass mode in a low gain mode to improve signal quality.

2020000, Jan 2, 2020

Jul 6, 2019

16/504252

- Woburn MA, US
Rimal Deep Singh - Irvine CA, US
Johannes Jacobus Emile Maria Hageraats - Kamuela HI, US
Joshua Haeseok Cho - Irvine CA, US
Bipul Agarwal - Irvine CA, US
Aravind Kumar Padyana - Costa Mesa CA, US

H03G 3/30
H03F 1/22
H03G 1/00
H03G 3/00
H03F 1/56
H03F 3/193
H04B 7/08

Described herein are variable gain amplifiers and multiplexers that embed programmable attenuators into switchable paths to provide variable gain for individual amplifier inputs. The variable gain for an individual input is provided using a amplification stage that is common for each input of the amplifier. A variable attenuation is provided for individual inputs through a combination of a band selection switch and an attenuation selection branch. The attenuation can be tailored for individual inputs and can depend on a gain mode of the amplifier.

2019020, Jul 4, 2019

Mar 12, 2019

16/351446

- Woburn MA, US
Junhyung Lee - Irvine CA, US
Joshua Haeseok Cho - Irvine CA, US
Aravind Kumar Padyana - Costa Mesa CA, US
Bipul Agarwal - Irvine CA, US

H04B 1/40
H04B 7/08

Described herein are variable gain amplifiers that selectively provide variable or tailored impedances at a degeneration block and/or feedback block depending at least in part on a gain mode of the variable gain amplifier. This advantageously reduces or eliminates performance penalties in one or more gain modes. The variable impedances can be configured to improve linearity of the amplification process in targeted gain modes. The variable gain amplifier can be configured to provide a low-loss bypass mode in a low gain mode to improve signal quality. The degeneration block can be selectively isolated from a reference potential node to improve performance.

2018006, Mar 1, 2018

Aug 30, 2017

15/690762

- Woburn MA, US
Rimal Deep Singh - Irvine CA, US
Johannes Jacobus Emile Maria Hageraats - Kamuela HI, US
Joshua Haeseok Cho - Irvine CA, US
Bipul Agarwal - Irvine CA, US
Aravind Kumar Padyana - Costa Mesa CA, US

H03G 3/30
H03F 1/56
H03F 3/193
H04B 7/08

Described herein are variable gain amplifiers and multiplexers that embed programmable attenuators into switchable paths that allow signals in a high gain mode to bypass attenuation. This advantageously reduces or eliminates performance penalties in the high gain mode. The programmable attenuators can be configured to improve linearity of the amplification process through pre-LNA attenuation in targeted gain modes. In addition, described herein are variable gain amplifiers with embedded attenuators in a switching network. The attenuators can be embedded onto switches and can be configured to have little or no effect on a noise factor in a high gain mode because the switching network can provide an attenuation bypass in a high gain mode and an attenuation in other gain modes. The programmable attenuators can be embedded onto a multi-input LNA architecture.