Inventor
MARTIN FREDERICK L
US34 patents
⚠️ This page may combine multiple inventors who share the name “MARTIN FREDERICK L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MOTOROLA INC
25 patentsUS5686864ANov 11, 1997
Method and apparatus for controlling a voltage controlled oscillator tuning range in a frequency synthesizer
MOTOROLA INC216 citations97
US5418497AMay 23, 1995
Low voltage VCO having two oscillator circuits of different frequencies
MOTOROLA INC72 citations96
US7409012B2Aug 5, 2008
Modulator and signaling method
MOTOROLA INC35 citations92
US7277457B2Oct 2, 2007
Sync bursts for frequency offset compensation
MOTOROLA INC27 citations92
US6922432B2Jul 26, 2005
System for spread spectrum communication
MOTOROLA INC33 citations92
US6519275B2Feb 11, 2003
Communications system employing differential orthogonal modulation
MOTOROLA INC51 citations92
US4994768AFeb 19, 1991
Frequency synthesizer with FM modulation
MOTOROLA INC31 citations92
US4967165AOct 30, 1990
Crystal reference for use in oscillator circuit
MOTOROLA INC27 citations92
US4959617ASep 25, 1990
Dual state phase detector having frequency steering capability
MOTOROLA INC31 citations92
US6774732B1Aug 10, 2004
System and method for coarse tuning a phase locked loop (PLL) synthesizer using 2-PI slip detection
MOTOROLA INC30 citations91
US5781075AJul 14, 1998
Temperature sensing apparatus
MOTOROLA INC46 citations91
US5128633AJul 7, 1992
Multi-loop synthesizer
MOTOROLA INC48 citations91
US7016661B2Mar 21, 2006
Multi-mode receiver for frequency error mitigation
MOTOROLA INC13 citations84
US6690748B2Feb 10, 2004
Receiver with improved digital intermediate to base band demodulator
MOTOROLA INC14 citations84
US7295638B2Nov 13, 2007
Communication device
MOTOROLA INC10 citations82
US7242947B2Jul 10, 2007
Method and apparatus for determining the location of a unit using neighbor lists
MOTOROLA INC17 citations82
US6891420B2May 10, 2005
Method and apparatus for digital frequency synthesis
MOTOROLA INC13 citations82
US4975650ADec 4, 1990
Phase detector
MOTOROLA INC20 citations82
US5179358AJan 12, 1993
Circuit, counter and frequency synthesizer with adjustable bias current
MOTOROLA INC15 citations74
US6222386B1Apr 24, 2001
Method and apparatus for providing a low voltage level shift
MOTOROLA INC10 citations73
US6018261AJan 25, 2000
Method and apparatus for providing a low voltage level shift
MOTOROLA INC14 citations73
US5515004AMay 7, 1996
Method and apparatus for precision gain control for amplified signals
MOTOROLA INC9 citations73
US6297703B1Oct 2, 2001
Method and apparatus for producing an offset frequency
MOTOROLA INC8 citations71
US6281712B1Aug 28, 2001
Phase detector with frequency steering
MOTOROLA INC11 citations70
US7050467B1May 23, 2006
Digital-to-phase-converter
MOTOROLA INC1 citations52