Jie H Yang

US Patent:

20130002358, Jan 3, 2013

Filed:

Jul 12, 2012

Appl. No.:

13/547380

Inventors:

David J. Mitchell - Oviedo FL, US
John R. Fraley - Fayetteville AR, US
Jie Yang - Fayetteville AR, US
Cora Schillig - Orlando FL, US
Bryon Western - West Fork AR, US
Roberto Marcelo Schupbach - Fayetteville AR, US

International Classification:

H03F 3/04

US Classification:

330289, 330250, 330297

Abstract:

A circuitry adapted to operate in a high-temperature environment of a turbine engine is provided. A relatively high-gain differential amplifier () may have an input terminal coupled to receive a voltage indicative of a sensed parameter of a component () of the turbine engine. A hybrid load circuitry may be coupled to the differential amplifier. A voltage regulator circuitry () may be coupled to power the differential amplifier. The differential amplifier, the hybrid load circuitry and the voltage regulator circuitry may each be disposed in the high-temperature environment of the turbine engine.

US Patent:

20140002050, Jan 2, 2014

Filed:

Jun 29, 2012

Appl. No.:

13/537208

Inventors:

David J. Mitchell - Oviedo FL, US
John R. Fraley - Fayetteville AR, US
Jie Yang - Fayetteville AR, US
Cora Schillig - Orlando FL, US
Bryon Western - Fayetteville AR, US
Roberto Marcelo Schupbach - Fayetteville AR, US

International Classification:

G05F 3/02

US Classification:

323311

Abstract:

A voltage regulator circuitry () adapted to operate in a high-temperature environment of a turbine engine is provided. The voltage regulator may include a constant current source () including a first semiconductor switch () and a first resistor () connected between a gate terminal (G) and a source terminal (S) of the first semiconductor switch. A second resistor () is connected to the gate terminal of the first semiconductor switch () and to an electrical ground (). The constant current source is coupled to generate a voltage reference across the second resistor A source follower output stage may include a second semiconductor switch () and a third resistor () connected between the electrical ground and a source terminal of the second semiconductor switch. The generated voltage reference is applied to a gating terminal of the second semiconductor switch ().

US Patent:

20140002191, Jan 2, 2014

Filed:

Jun 29, 2012

Appl. No.:

13/537572

Inventors:

David J. Mitchell - Oviedo FL, US
John R. Fraley - Fayetteville AR, US
Jie Yang - Fayetteville AR, US
Cora Schillig - Orlando FL, US
Roberto Marcelo Schupbach - Fayetteville AR, US
Bryon Western - West Fork AR, US

International Classification:

H03F 3/45

US Classification:

330253

Abstract:

A circuitry () adapted to operate in a high-temperature environment of a turbine engine is provided. The circuitry may include a differential amplifier () having an input terminal () coupled to a sensing element to receive a voltage indicative of a sensed parameter. A hybrid load circuitry () may be AC-coupled to the differential amplifier. The hybrid load circuitry may include a resistor-capacitor circuit () arranged to provide a path to an AC signal component with respect to the drain terminal of the switch (e.g., ) of a differential pair of semiconductor switches which receives the voltage indicative of the sensed parameter.

US Patent:

20140009222, Jan 9, 2014

Filed:

Jul 9, 2012

Appl. No.:

13/544159

Inventors:

David J. Mitchell - Oviedo FL, US
Jie Yang - Fayetteville AR, US
Roberto Marcelo Schupbach - Fayetteville AR, US
John R. Fraley - Fayetteville AR, US
Cora Schillig - Orlando FL, US
Bryon Western - Fayetteville AR, US

International Classification:

H03F 3/45

US Classification:

330 9

Abstract:

Chopper circuitry may be adapted to operate in a high-temperature environment of a turbine. A first semiconductor switch () may have a first terminal coupled to receive a first output signal from a first leg () of a differential amplifier (). A second switch () may have a first terminal coupled thru a first resistive element (R) to a second terminal of the first semiconductor switch. The first terminal of the second semiconductor switch may be coupled to receive thru a second resistive element (R) a second output signal from a second leg () of the amplifier. Switches () may be responsive to a switching control signal to respective gate terminals of the switches to supply an output signal, which alternates in correspondence with a frequency of the switching control signal from a first amplitude level to a second amplitude level, which effectively provides a doubling amplification factor.

US Patent:

20150214988, Jul 30, 2015

Filed:

Apr 6, 2015

Appl. No.:

14/679603

Inventors:

- Dallas TX, US
Zigang Yang - Plano TX, US
Xiaohan Chen - Sunnyvale CA, US
Raul Blazquez - Dallas TX, US
Lars Jorgensen - Royal Oaks CA, US
Hongzhi Zhao - Sunnyvale CA, US
Jie Yang - Dallas TX, US

International Classification:

H04B 1/04
H04L 27/26

Abstract:

A method of predistorting an input signal () for an amplifier is disclosed (FIG. ). The method includes predistorting the input signal with a first set of parameters (FDPD) and a second set of parameters (CDPD) at a first time (). The first set of parameters is updated at a second time (). The second set of parameters is updated separately from the first set of parameters at a third time ().

US Patent:

20140294120, Oct 2, 2014

Filed:

Mar 28, 2013

Appl. No.:

13/852333

Inventors:

- Dallas TX, US
Zigang Yang - Plano TX, US
Xiaohan Chen - Sunnyvale CA, US
Raul Blazquez - Dallas TX, US
Lars Jorgensen - Royal Oaks CA, US
Hongzhi Zhao - Sunnyvale CA, US
Jie Yang - Dallas TX, US

Assignee:

Texas Intsruments Incorporated - Dallas TX

International Classification:

H03F 1/32

US Classification:

375297, 330149

Abstract:

A method of predistorting an input signal () for an amplifier is disclosed (FIG. ). The method includes predistorting the input signal with a first set of parameters (FDPD) and a second set of parameters (CDPD) at a first time (). The first set of parameters is updated at a second time (). The second set of parameters is updated separately from the first set of parameters at a third time ().