Inventor
Edwin Ray Twitchell
Inventor
San Jose, CA, US
Overview
Patents· 16 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H03Fprimary
H03FAmplifiers33%
H04LTransmission of digital information, e.g. telegraphic communication33%
H04NPictorial communication, e.g. television15%
G01SRadio direction-finding4%
G06FElectric digital data processing4%
G06JHybrid computing arrangements4%
H01QAntennas, i.e. radio aerials4%
H03HImpedance networks, e.g. resonant circuits4%
PatentTitleYear
10,935,624Efficiently measuring phase differences in an angle of arrival system20217,409,004'Hybrid polar modulator differential phase Cartesian feedback correction circuit for power amplifier linearization'20086,795,492'Configurable exciter'20046,587,018'Notch filter and method'20036,519,010'Broadcast transmission system with sampling and correction arrangement for correcting distortion caused by amplifying and signal conditioning components'20036,501,805'Broadcast transmission system with single correction filter for correcting linear and non-linear distortion'20026,473,133'Broadcast transmission system with correction for distortion caused by amplifying and signal conditioning components at a different rate'20026,335,767'Broadcast transmission system with distributed correction'20026,285,412'Adaptive pre-equalization apparatus for correcting linear distortion of a non-ideal data transmission system'20016,281,936'Broadcast transmission system with sampling and correction arrangement for correcting distortion caused by amplifying and signal conditioning components'20016,173,429'Apparatus for providing error correction data in a digital data transfer system'20016,081,158'Adaptive pre-distortion apparatus for linearizing an amplifier output within a data transmission system'20005,917,373'Apparatus with reduced A/D dynamic range requirement in a compensating feedback system'19995,801,595'Device and method for digital vestigial sideband modulation'19985,751,347'Vestigial sideband test signal generator and method'19985,291,428'Apparatus for reducing spurious frequency components in the output signal of a direct digital synthesizer'1994Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1994–2004Patents assigned to HARRIS CORP (13)· patent assignee history
1994–2001Based in Quincy, IL, US· patent location history
2001–2008Based in San Jose, CA, US· patent location history
2003Patents assigned to TROPIAN INC (1)· patent assignee history
2008Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (1)· patent assignee history
2021Patents assigned to L3 TECH INC (1)· patent assignee history
2021Based in Salt Lake City, UT, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HARRIS CORP | 13 | 1994–2004 |
| L3 TECH INC | 1 | 2021 |
| MATSUSHITA ELECTRIC INDUSTRIAL CO LTD | 1 | 2008 |
| TROPIAN INC | 1 | 2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| San Jose, California, US | 8 | 2001–2008 |
| Quincy, Illinois, US | 7 | 1994–2001 |
| Salt Lake City, UT, US | 1 | 2021 |