MICHAEL TYLER DAVIS
Pilots at Montecito Ave, Mountain View, CA
License number
California A4341447
Issued Date
Jan 2017
Expiration Date
Jan 2018
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
1285 Montecito Ave APT 43, Mountain View, CA 94043
Professional information
Automatic Network Analyzer Having Noise/Npr Test Capability
US Patent:
6434501, Aug 13, 2002
Filed:
Mar 21, 2000
Appl. No.:
09/532670
Inventors:
Alan Cherrette - Los Altos CA
Michael S. Davis - Mountain View CA
Levent Ersoy - Cupertino CA
Joel Varney - Mountain View CA
Michael S. Davis - Mountain View CA
Levent Ersoy - Cupertino CA
Joel Varney - Mountain View CA
Assignee:
Space Systems/Loral, Inc. - Palo Alto CA
International Classification:
G01R 2300
US Classification:
702120, 324 7619
Abstract:
An automatic network analyzer that measures continuous wave radio microwave driven transfer characteristics of nonlinear devices and simultaneously calculates and displays corresponding noise driven transfer characteristics and noise power ratio data. This automatic network analyzer employs software or firmware that uses closed-form equations to exactly calculate noise parameters. This is done in real-time as CW measurements are taken.
Pre-Amplification Software Linearizer
US Patent:
2002017, Nov 21, 2002
Filed:
Mar 28, 2001
Appl. No.:
09/819781
Inventors:
Michael Davis - Mountain View CA, US
Alan Cherrette - Los Altos CA, US
Joel Varney - Mountain View CA, US
Alan Cherrette - Los Altos CA, US
Joel Varney - Mountain View CA, US
International Classification:
H04B001/10
US Classification:
455/295000, 455/063000, 455/114000
Abstract:
Pre-amplification software-based linearization of a signal that is subsequently distorted by a nonlinear amplifier to produce a signal having reduced intermodulation distortion. The predistortion that reduces the intermodulation distortion is obtained by processing the original signal using an algorithm that is based on the characteristics of the nonlinear amplifier. Exemplary processing apparatus comprises circuitry that digitizing an input signal. A software linearizer processes the digitized signal to produce a pre-distorted RF signal. Circuitry is provided that converts the pre-distorted RF signal to an analog signal. A nonlinear amplifier amplifies the pre-distorted analog signal to produce an output signal corresponding to the input signal that has reduced intermodulation distortion. An exemplary processing method comprises the following steps. An input signal is digitized. The digitized signal is processed to produce a pre-distorted RF signal that is to be subsequently amplified to produce a signal that has reduced intermodulation distortion. The pre-distorted RF signal is converted to an analog signal. The pre-distorted analog signal is amplified to produce an output signal corresponding to the input signal that has reduced intermodulation distortion.
Post-Amplification Linearization
US Patent:
2002016, Oct 31, 2002
Filed:
Mar 28, 2001
Appl. No.:
09/819348
Inventors:
Michael Davis - Mountain View CA, US
Alan Cherrette - Los Altos CA, US
Alan Cherrette - Los Altos CA, US
International Classification:
H04B001/10
US Classification:
455/063000, 455/295000, 455/296000, 375/296000, 375/346000
Abstract:
A post-amplification linearization technique for processing a signal distorted by a nonlinear amplifier. The post-amplification linearization technique is implemented using a linearizer and linearization method and involves processing the distorted signal using nonlinear processing to reduce intermodulation distortion. The nonlinear processing reduces the intermodulation distortion by applying an integral transformation to the nonlinear amplifier characteristic.