Inventor

David Scott Whitefield

Inventor

Andover, MA, US

Overview

2013–2021

Patent span

Electricity

Primary field (CPC H)

Patents· 74 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H04Bprimary

H04BTransmission18%

H01LSemiconductor devices14%

H10DInorganic electric semiconductor devices14%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1013%

H03HImpedance networks, e.g. resonant circuits8%

H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h106%

H01PWaveguides5%

H03KPulse technique4%

H10NElectric solid-state devices not otherwise provided for4%

H04WWireless communication networks2%

PatentTitleYear

11,063,586Main-auxiliary field-effect transistor configurations with an auxiliary stack and interior parallel transistors2021 11,044,007System and apparatus for disaster backup gateway for a multi-gateway spot beam satellite2021 11,026,231Maintaining and distributing state due to temporary failures in a shared bandwidth network2021 11,004,774Fabricating field-effect transistors with body contacts between source, gate and drain assemblies2021 10,991,662Isolation cavities in semiconductor devices2021 10,991,661Radio-frequency isolation using backside cavities2021 10,985,733Transmission-line-based radio-frequency switching2021 10,950,635Orthogonal transistor layouts2021 10,938,652Gateway diversity switching2021 10,921,458Apparatus and methods for interference mitigation by satellite networks2021 10,865,101Discharge circuits, devices and methods2020 10,862,475Independently controlled main-auxiliary branch configurations for radio frequency applications2020 10,847,543Transistor finger spacing and dimension variation in electronic devices2020 10,847,445Non-symmetric body contacts for field-effect transistors2020 10,840,233Radio-frequency switch having stack of non-uniform elements2020 10,771,101Devices and methods related to packaging of radio-frequency devices on ceramic substrates2020 10,763,847Main-auxiliary field-effect transistor configurations with interior parallel transistors2020 10,755,987Radio-frequency isolation using porous silicon2020 10,707,826Self-adjusting electromagnetic coupler with automatic frequency detection2020 10,667,264Maintaining and distributing state due to temporary failures in a shared bandwidth network2020 10,665,552Radio-frequency isolation cavities and cavity formation2020 10,658,308Topside radio-frequency isolation cavity configuration2020 10,630,283Segmented main-auxiliary branch configurations for radio frequency applications2020 10,630,282Hybrid main-auxiliary field-effect transistor configurations for radio frequency applications2020 10,574,227Main-auxiliary field-effect transistor structures for radio frequency applications2020 10,553,549Cavity formation in backside interface layer for radio-frequency isolation2020 10,553,547Radio frequency isolation cavity formation using sacrificial material2020 10,547,303Series main-auxiliary field-effect transistor configurations for radio frequency applications2020 10,498,329Parallel main-auxiliary field-effect transistor configurations for radio frequency applications2019 10,483,918Doherty power amplifier for radio-frequency applications2019 10,469,072Stacked auxiliary field-effect transistors with buffers for radio frequency applications2019 10,461,841Satellite communication network terminal installation method and system2019 10,446,505Backside substrate openings in transistor devices2019 10,410,957Body contacts for field-effect transistors2019 10,389,350Stacked auxiliary field-effect transistor configurations for radio frequency applications2019 10,284,167Self-adjusting electromagnetic coupler with automatic frequency detection2019 10,256,794Integrated switch-filter network2019 10,256,197Radio-frequency isolation using front side opening2019 10,249,576Cavity formation using sacrificial material2019 10,249,575Radio-frequency isolation using cavity formed in interface layer2019 10,229,902Stack device having voltage compensation2019 10,229,932Voltage distribution in transistor stacks using non-uniform transistor dimensions2019 10,194,408System and method for establishing virtual beams for initial timing synchronization in a satellite communication network2019 10,181,428Silicon on porous silicon2019 10,153,306Transistor layout with low aspect ratio2018 10,125,011MEMS devices having discharge circuits2018 10,008,455Radio frequency isolation using substrate opening2018 9,990,322Dual serial/parallel interface devices and switching components2018 9,979,068Radio frequency architectures and methods providing switchable bypass and pass-through paths2018 9,960,747Integrated filter and directional coupler assemblies2018 9,960,750Apparatus for reconfigurable directional couplers in an RF transceiver with controllable capacitive coupling2018 9,954,564Electromagnetic couplers with multi-band filtering2018 9,953,938Tunable active silicon for coupler linearity improvement and reconfiguration2018 9,948,271Methods for reconfiguring directional couplers in an RF transceiver2018 9,941,856Apparatus for reconfigurable directional couplers in an RF transceiver with selectable phase shifters2018 9,866,244'Electromagnetic couplers for multi-frequency power detection'2018 9,859,225'Backside cavity formation in semiconductor devices'2018 9,837,362Cavity formation in interface layer in semiconductor devices2017 9,831,192Cavity formation in semiconductor devices2017 9,812,757'RF coupler having coupled line with adjustable length'2017 9,806,094'Non-uniform spacing in transistor stacks'2017 9,806,676'Power amplification system with programmable load line'2017 9,793,592'RF coupler with decoupled state'2017 9,774,300'Transformer-based doherty power amplifier'2017 9,721,936'Field-effect transistor stack voltage compensation'2017 9,692,103'RF coupler with switch between coupler port and adjustable termination impedance circuit'2017 9,614,269'RF coupler with adjustable termination impedance'2017 9,564,937'Devices and methods related to packaging of radio-frequency devices on ceramic substrates'2017 9,564,405'Substrate opening formation in semiconductor devices'2017 9,553,617'Apparatus and methods for reconfigurable directional couplers in an RF transceiver with controllable capacitive coupling'2017 9,548,522'Systems, circuits and methods related to low-loss bypass of a radio-frequency filter or diplexer'2017 9,496,902'Apparatus and methods for reconfigurable directional couplers in an RF transceiver with selectable phase shifters'2016 9,092,393'Dual mode serial/parallel interface and use thereof in improved wireless devices and switching components'2015 8,599,524'Surface mount spark gap'2013

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2013–2021Patents assigned to SKYWORKS SOLUTIONS INC (67)· patent assignee history

2013–2021Based in Andover, MA, US· patent location history

2019–2021Patents assigned to HUGHES NETWORK SYSTEMS LLC (6)· patent assignee history

2019–2021Based in Gaithersburg, MD, US· patent location history

2020–2021Patents assigned to RAMAKRISHNAN JAYANT (2)· patent assignee history

2020–2021Patents assigned to TORRES ROB (2)· patent assignee history

2020–2021Patents assigned to WHITEFIELD DAVID (2)· patent assignee history

2020–2021Based in Germantown, MD, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SKYWORKS SOLUTIONS INC	67	2013–2021
HUGHES NETWORK SYSTEMS LLC	6	2019–2021
RAMAKRISHNAN JAYANT	2	2020–2021
TORRES ROB	2	2020–2021
WHITEFIELD DAVIDself	2	2020–2021

Locations

Location	Patents	Span
Andover, Massachusetts, US	67	2013–2021
Gaithersburg, Maryland, US	4	2019–2021
Germantown, Maryland, US	3	2020–2021