Inventor
Andrew F. Folkmann
Inventor
Cedar Rapids, IA, US
Overview
Patents· 31 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H03Fprimary
H03FAmplifiers27%
H04BTransmission19%
H04LTransmission of digital information, e.g. telegraphic communication14%
H03GControl of amplification10%
H03HImpedance networks, e.g. resonant circuits10%
H01QAntennas, i.e. radio aerials5%
H04WWireless communication networks5%
G01RMeasuring electric variables3%
G05FSystems for regulating electric or magnetic variables3%
Y02DClimate change mitigation technologies in information and communication technologies [ict], i.e. information and communication technologies aiming at the reduction of their own energy use3%
PatentTitleYear
11,025,224RF circuitry having simplified acoustic RF resonator parallel capacitance compensation202110,742,474Voltage memory digital pre-distortion circuit202010,680,559Envelope tracking system for transmitting a wide modulation bandwidth signal(s)202010,530,305Nonlinear bandwidth compression circuitry202010,491,162Envelope tracking amplifier circuit201910,333,494Simplified acoustic RF resonator parallel capacitance compensation201910,291,205Simplified acoustic RF resonator parallel capacitance compensation201910,284,412Voltage memory digital pre-distortion circuit201910,277,260Multi radio access technology radio circuit201910,256,790Simplified acoustic RF resonator parallel capacitance compensation201910,193,502Dual-mode envelope tracking power management circuit20199,935,662Transmit spectral regrowth cancellation at receiver port20189,893,750'Tunable transmit cancellation in acoustic receiver filters'20189,837,984RF ladder filter with simplified acoustic RF resonator parallel capacitance compensation20179,813,036'Dynamic loadline power amplifier with baseband linearization'20179,698,756'Acoustic RF resonator parallel capacitance compensation'20179,444,415'Power amplifier spurious cancellation'20169,331,836'De-multiplexing a radio frequency input signal using output transformer circuitry'20169,298,198'Noise reduction for envelope tracking'20169,276,784'Frequency selective predistortion'20169,263,996'Quasi iso-gain supply voltage function for envelope tracking systems'20169,178,472'Bi-directional power supply signal based linear amplifier'20159,024,688'Dual parallel amplifier based DC-DC converter'20158,952,710'Pulsed behavior modeling with steady state average conditions'20158,626,091'Envelope tracking with variable compression'20148,570,913'De-multiplexing a radio frequency input signal using output transformer circuitry'20137,656,964'Forward and reverse VSWR insensitive power detection using phase shifting and harmonic filtering'20107,570,932'Dual mode quadrature radio frequency power amplifier'20097,440,734'Active quadrature radio frequency power detector'20084,450,417'Feed forward circuit'19844,426,630'Electronically tunable band reject filter'1984Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1984–2021Based in Cedar Rapids, IA, US· patent location history
2008–2018Patents assigned to RF MICRO DEVICES INC (16)· patent assignee history
2013–2016Patents assigned to FOLKMANN ANDREW F (4)· patent assignee history
2013–2016Patents assigned to KHLAT NADIM (3)· patent assignee history
2014–2016Patents assigned to RETZ JAMES M (3)· patent assignee history
2016–2021Patents assigned to QORVO US INC (15)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| RF MICRO DEVICES INC | 16 | 2008–2018 |
| QORVO US INC | 15 | 2016–2021 |
| FOLKMANN ANDREW Fself | 4 | 2013–2016 |
| KHLAT NADIM | 3 | 2013–2016 |
| RETZ JAMES M | 3 | 2014–2016 |
Locations
| Location | Patents | Span |
|---|---|---|
| Cedar Rapids, IA, US | 31 | 1984–2021 |