Inventor
HIETALA ALEXANDER W
US24 patents
⚠️ This page may combine multiple inventors who share the name “HIETALA ALEXANDER W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MOTOROLA INC
21 patentsUS5430416AJul 4, 1995
Power amplifier having nested amplitude modulation controller and phase modulation controller
MOTOROLA INC246 citations99
US5055802AOct 8, 1991
Multiaccumulator sigma-delta fractional-n synthesis
MOTOROLA INC155 citations99
US5278994AJan 11, 1994
Power amplifier saturation detection and correction method and apparatus
MOTOROLA INC127 citations98
US5424689AJun 13, 1995
Filtering device for use in a phase locked loop controller
MOTOROLA INC98 citations96
US5150075ASep 22, 1992
Power amplifier ramp up method and apparatus
MOTOROLA INC91 citations96
US5111162AMay 5, 1992
Digital frequency synthesizer having AFC and modulation applied to frequency divider
MOTOROLA INC101 citations96
US5070310ADec 3, 1991
Multiple latched accumulator fractional N synthesis
MOTOROLA INC64 citations96
US5055800AOct 8, 1991
Fractional n/m synthesis
MOTOROLA INC87 citations94
US6169886B1Jan 2, 2001
Power amplifier control according to a delayed waveform suitable for use in a communication device
MOTOROLA INC22 citations93
US6850574B2Feb 1, 2005
Multiple bandwidth amplifier control systems for mobile stations and methods therefor
MOTOROLA INC20 citations92
US6327319B1Dec 4, 2001
Phase detector with frequency steering
MOTOROLA INC26 citations92
US6229991B1May 8, 2001
Method of and apparatus for automatic frequency control range extension
MOTOROLA INC22 citations92
US5495206AFeb 27, 1996
Fractional N frequency synthesis with residual error correction and method thereof
MOTOROLA INC53 citations92
US5493700AFeb 20, 1996
Automatic frequency control apparatus
MOTOROLA INC36 citations92
US5448770ASep 5, 1995
Temperature-coefficient controlled radio frequency signal detecting circuitry
MOTOROLA INC40 citations92
US5166642ANov 24, 1992
Multiple accumulator fractional N synthesis with series recombination
MOTOROLA INC51 citations92
US5140286AAug 18, 1992
Oscillator with bias and buffer circuits formed in a die mounted with distributed elements on ceramic substrate
MOTOROLA INC36 citations92
US5093632AMar 3, 1992
Latched accumulator fractional n synthesis with residual error reduction
MOTOROLA INC53 citations92
US4885553ADec 5, 1989
Continuously adaptive phase locked loop synthesizer
MOTOROLA INC24 citations92
US6480555B1Nov 12, 2002
Method and apparatus for extended range frequency correction burst detection
MOTOROLA INC43 citations87
US5055803AOct 8, 1991
Parameter tolerant PLL synthesizer
MOTOROLA INC18 citations74