Inventor
Lawrence F. Cygan
Inventor
Schaumburg, IL, US
Overview
Patents· 21 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H03Fprimary
H03FAmplifiers53%
H04BTransmission22%
H03GControl of amplification9%
H03HImpedance networks, e.g. resonant circuits6%
H01PWaveguides3%
H03CModulation3%
H05KPrinted circuits3%
PatentTitleYear
8,149,027'Circuit with a voltage dependent resistor for controlling an on/off state of a transistor'20127,825,724'Method and apparatus for direct digital to radio frequency conversion'20107,071,775'Method and apparatus for an enhanced efficiency power amplifier'20066,822,523'Power modulator and method of operating a power modulator'20046,624,712'Method and apparatus for power modulating to prevent instances of clipping'20036,624,711'Method and apparatus for power modulating to prevent instances of clipping'20036,556,099'Multilayered tapered transmission line, device and method for making the same'20036,374,092'Efficient multimode power amplifier'20026,262,629'High efficiency power amplifier having reduced output matching networks for use in portable devices'20016,085,074'Apparatus and method for amplifying an amplitude-varying signal'20005,880,633'High efficiency power amplifier'19995,675,287'Digital DC correction circuit for a linear transmitter'19975,675,286'Method and apparatus for an improved linear transmitter'19975,574,992'Method and apparatus for reducing off-channel interference produced by a linear transmitter'19965,564,087'Method and apparatus for a linear transmitter'19965,564,086'Method and apparatus for enhancing an operating characteristic of a radio transmitter'19965,542,096'Method for a transmitter to compensate for varying loading without an isolator'19965,426,395'Method and apparatus for protecting power amplifiers from excessive operating power levels'19955,423,082'Method for a transmitter to compensate for varying loading without an isolator'19955,015,972'Broadband RF transformer'19914,504,886'Grounding and positioning clip for a power transistor'1985Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1985–2006Patents assigned to MOTOROLA INC (19)· patent assignee history
1985–2012Based in Schaumburg, IL, US· patent location history
2010–2012Patents assigned to MOTOROLA MOBILITY INC (2)· patent assignee history
2012Patents assigned to CYGAN LAWRENCE F (1)· patent assignee history
2012Patents assigned to KHAN ANDREW M (1)· patent assignee history
2012Patents assigned to WILLIAMS CURTIS M (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MOTOROLA INC | 19 | 1985–2006 |
| MOTOROLA MOBILITY INC | 2 | 2010–2012 |
| CYGAN LAWRENCE Fself | 1 | 2012 |
| KHAN ANDREW M | 1 | 2012 |
| WILLIAMS CURTIS M | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Schaumburg, Illinois, US | 21 | 1985–2012 |