Inventor
Thomas R. Apel
Inventor
Portland, OR, US
Overview
Patents· 40 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H03Fprimary
H03FAmplifiers43%
H01PWaveguides9%
H03GControl of amplification9%
H03HImpedance networks, e.g. resonant circuits7%
H10DInorganic electric semiconductor devices7%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h107%
G05FSystems for regulating electric or magnetic variables3%
H05KPrinted circuits3%
H01QAntennas, i.e. radio aerials2%
H03BGeneration of oscillations, directly or by frequency-changing, by circuits employing active elements which operate in a non-switching manner2%
PatentTitleYear
9,276,310'Omnidirectional helically arrayed antenna'20168,748,255'Method of manufacturing an electrostatic protection device'20148,227,835'Electrostatic protection device'20128,164,387'Simultaneous harmonic termination in a push-pull power amplifier'20128,159,048'Bipolar junction transistor geometry'20128,093,959'Compact, low loss, multilayer balun'20127,768,098'Integrated low inductance interconnect for RF integrated circuits'20107,728,662'Saturated power amplifier with selectable and variable output power levels'20107,667,532'Bias control system for a power amplifier'20107,489,183'Bias control system for a power amplifier'20097,382,186'Amplifiers with high efficiency in multiple power modes'20087,382,194'Switched distributed power amplifier'20087,345,537'Linear power amplifier with multiple output power levels'20087,224,230'Bias circuit with mode control and compensation for voltage and temperature'20077,177,370'Method and architecture for dual-mode linear and saturated power amplifier operation'20077,148,748'Active protection circuit for load mismatched power amplifier'20067,102,464'Switched transformer for adjusting power amplifier loading'20067,046,083'Efficient power control of a power amplifier by periphery switching'20066,930,555'Amplifier power control circuit'20056,894,561'Efficient power control of a power amplifier by periphery switching'20056,882,240'Integrated segmented and interdigitated broadside- and edge-coupled transmission lines'20056,879,214'Bias circuit with controlled temperature dependence'20056,853,250'Amplifier power control circuit'20056,806,558'Integrated segmented and interdigitated broadside- and edge-coupled transmission lines'20046,762,647'Active protection circuit for load mismatched power amplifier'20046,727,761'Resonant bypassed base ballast circuit'20046,653,902'Amplifier power control circuit'20036,529,079'RF power amplifier with distributed bias circuit'20036,459,340'Power amplifier mismatch protection with clamping diodes in RF feedback circuit'20026,441,687'Amplifier bias voltage generating circuit and method'20026,437,658'Three-level semiconductor balun and method for creating the same'20026,407,647'Integrated broadside coupled transmission line element'20025,826,183'Circuit for simultaneous frequency doubler and mixer'19985,574,411'Lumped parameter balun'19965,349,306'Apparatus and method for high performance wide-band power amplifier monolithic microwave integrated circuits'19945,208,726'Metal-insulator-metal (MIM) capacitor-around-via structure for a monolithic microwave integrated circuit (MMIC) and method of manufacturing same'19934,540,954'Singly terminated distributed amplifier'19854,467,293'Ferrite type directional coupler'19844,446,445'Singly terminated push-pull distributed amplifier'19844,442,407'Two loop automatic level control for power amplifier'1984Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1984–1985Patents assigned to ROCKWELL INTERNATIONAL CORP (3)· patent assignee history
1984–1985Based in Cedar Rapids, IA, US· patent location history
1993–1994Patents assigned to TELEDYNE MONOLITHIC MICROWAVE (2)· patent assignee history
1993–1996Based in Sunnyvale, CA, US· patent location history
1998Based in Plano, TX, US· patent location history
2002–2014Patents assigned to TRIQUINT SEMICONDUCTOR INC (30)· patent assignee history
2002–2014Based in Portland, OR, US· patent location history
2012–2016Patents assigned to APEL THOMAS R (6)· patent assignee history
2012–2014Patents assigned to MIDDLETON JEREMY R (3)· patent assignee history
2016Based in Austin, TX, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| TRIQUINT SEMICONDUCTOR INC | 30 | 2002–2014 |
| APEL THOMAS Rself | 6 | 2012–2016 |
| MIDDLETON JEREMY R | 3 | 2012–2014 |
| ROCKWELL INTERNATIONAL CORP | 3 | 1984–1985 |
| TELEDYNE MONOLITHIC MICROWAVE | 2 | 1993–1994 |
Locations
| Location | Patents | Span |
|---|---|---|
| Portland, OR, US | 31 | 2002–2014 |
| Cedar Rapids, IA, US | 4 | 1984–1985 |
| Sunnyvale, California, US | 3 | 1993–1996 |
| Austin, Texas, US | 1 | 2016 |
| Plano, Texas, US | 1 | 1998 |