Inventor
FOLKMANN ANDREW F
US30 patents
⚠️ This page may combine multiple inventors who share the name “FOLKMANN ANDREW F”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RF MICRO DEVICES INC
12 patentsUS9837984B2Dec 5, 2017
RF ladder filter with simplified acoustic RF resonator parallel capacitance compensation
RF MICRO DEVICES INC181 citations99
US9298198B2Mar 29, 2016
Noise reduction for envelope tracking
RF MICRO DEVICES INC47 citations94
US9024688B2May 5, 2015
Dual parallel amplifier based DC-DC converter
RF MICRO DEVICES INC32 citations94
US7570932B1Aug 4, 2009
Dual mode quadrature radio frequency power amplifier
RF MICRO DEVICES INC36 citations92
US7656964B1Feb 2, 2010
Forward and reverse VSWR insensitive power detection using phase shifting and harmonic filtering
RF MICRO DEVICES INC23 citations91
US9935662B2Apr 3, 2018
Transmit spectral regrowth cancellation at receiver port
RF MICRO DEVICES INC11 citations84
US7440734B1Oct 21, 2008
Active quadrature radio frequency power detector
RF MICRO DEVICES INC11 citations84
US9813036B2Nov 7, 2017
Dynamic loadline power amplifier with baseband linearization
RF MICRO DEVICES INC12 citations83
US9444415B2Sep 13, 2016
Power amplifier spurious cancellation
RF MICRO DEVICES INC2 citations63
US9276784B2Mar 1, 2016
Frequency selective predistortion
RF MICRO DEVICES INC2 citations63
US9331836B2May 3, 2016
De-multiplexing a radio frequency input signal using output transformer circuitry
RF MICRO DEVICES INC0 citations52
US9178472B2Nov 3, 2015
Bi-directional power supply signal based linear amplifier
RF MICRO DEVICES INC1 citations52
QORVO US INC
12 patentsUS9698756B2Jul 4, 2017
Acoustic RF resonator parallel capacitance compensation
QORVO US INC21 citations94
US10680559B2Jun 9, 2020
Envelope tracking system for transmitting a wide modulation bandwidth signal(s)
QORVO US INC10 citations84
US10530305B2Jan 7, 2020
Nonlinear bandwidth compression circuitry
QORVO US INC10 citations84
US11025224B2Jun 1, 2021
RF circuitry having simplified acoustic RF resonator parallel capacitance compensation
QORVO US INC1 citations73
US10491162B2Nov 26, 2019
Envelope tracking amplifier circuit
QORVO US INC2 citations73
US10333494B2Jun 25, 2019
Simplified acoustic RF resonator parallel capacitance compensation
QORVO US INC4 citations73
US10284412B2May 7, 2019
Voltage memory digital pre-distortion circuit
QORVO US INC4 citations73
US10277260B2Apr 30, 2019
Multi radio access technology radio circuit
QORVO US INC3 citations73
US9893750B2Feb 13, 2018
Tunable transmit cancellation in acoustic receiver filters
QORVO US INC2 citations73
US10742474B2Aug 11, 2020
Voltage memory digital pre-distortion circuit
QORVO US INC1 citations62
US12381514B2Aug 5, 2025
Power management circuit supporting phase correction in an analog signal
QORVO US INC0 citations59
US10193502B2Jan 29, 2019
Dual-mode envelope tracking power management circuit
QORVO US INC0 citations42