Assignee
TROPIAN INC
US·50 granted patents·1 pending application·2,682 citations·filing 1997–2005
Top patents by PatentIndex Score
51 records- 0199US6636112B1High-efficiency modulating RF amplifierTROPIAN INC·Filed 2000·Granted Oct 21, 2003·153 cites·15 claims
- 0299US6366177B1High-efficiency power modulatorsTROPIAN INC·Filed 2000·Granted Apr 2, 2002·242 cites·9 claims
- 0398US7038536B2Power supply processing for power amplifiersTROPIAN INC·Filed 2005·Granted May 2, 2006·68 cites·3 claims
- 0498US7010276B2Communications signal amplifiers having independent power control and amplitude modulationTROPIAN INC·Filed 2001·Granted Mar 7, 2006·109 cites·5 claims
- 0598US6690233B2Efficient, precise RF modulation using multiple amplifier stagesTROPIAN INC·Filed 2000·Granted Feb 10, 2004·127 cites·19 claims
- 0697US6377784B2High-efficiency modulation RF amplifierTROPIAN INC·Filed 1999·Granted Apr 23, 2002·188 cites·6 claims
- 0796US6850736B2Method and apparatus for reception quality indication in wireless communicationTROPIAN INC·Filed 2000·Granted Feb 1, 2005·102 cites·13 claims
- 0896US6816016B2High-efficiency modulating RF amplifierTROPIAN INC·Filed 2003·Granted Nov 9, 2004·89 cites·25 claims
- 0996US6781452B2Power supply processing for power amplifiersTROPIAN INC·Filed 2001·Granted Aug 24, 2004·71 cites·27 claims
- 1096US6734724B1Power control and modulation of switched-mode power amplifiers with one or more stagesTROPIAN INC·Filed 2000·Granted May 11, 2004·71 cites·24 claims
- 1196US6198347B1Driving circuits for switch mode RF power amplifiersTROPIAN INC·Filed 1999·Granted Mar 6, 2001·129 cites·9 claims
- 1296US5952895ADirect digital synthesis of precise, stable angle modulated RF signalTROPIAN INC·Filed 1998·Granted Sep 14, 1999·224 cites·14 claims
- 1394US6983025B2High quality power ramping in a communications transmitterTROPIAN INC·Filed 2001·Granted Jan 3, 2006·64 cites·33 claims
- 1494US6751265B1Method and system of amplitude modulation using dual/split channel unequal amplificationTROPIAN INC·Filed 2000·Granted Jun 15, 2004·92 cites·23 claims
- 1594US6653896B2Differential rf/microwave power amplifier using independent synchronized polar modulatorsTROPIAN INC·Filed 2001·Granted Nov 25, 2003·76 cites·27 claims
- 1694US6580329B2PLL bandwidth switchingTROPIAN INC·Filed 2001·Granted Jun 17, 2003·61 cites·2 claims
- 1793US6844776B2Power control and modulation of switched-mode power amplifiers with one or more stagesTROPIAN INC·Filed 2003·Granted Jan 18, 2005·42 cites·28 claims
- 1892US7026797B2Extremely high-speed switchmode DC-DC convertersTROPIAN INC·Filed 2003·Granted Apr 11, 2006·41 cites·57 claims
- 1992US6924695B2Power supply processing for power amplifiersTROPIAN INC·Filed 2004·Granted Aug 2, 2005·43 cites·16 claims
- 2091US6528975B2Saturation prevention and amplifier distortion reductionTROPIAN INC·Filed 2000·Granted Mar 4, 2003·54 cites·28 claims
- 2190US7054385B2Reduction of average-to-minimum power ratio in communications signalsTROPIAN INC·Filed 2001·Granted May 30, 2006·63 cites·22 claims
- 2288US6094101ADirect digital frequency synthesis enabling spur eliminationTROPIAN INC·Filed 1999·Granted Jul 25, 2000·90 cites·33 claims
- 2385US6215355B1Constant impedance for switchable amplifier with power controlTROPIAN INC·Filed 1999·Granted Apr 10, 2001·52 cites·6 claims
- 2483US6864668B1High-efficiency amplifier output level and burst controlTROPIAN INC·Filed 1999·Granted Mar 8, 2005·47 cites·14 claims
- 2582US6140882APhase lock loop enabling smooth loop bandwidth switchingTROPIAN INC·Filed 1998·Granted Oct 31, 2000·50 cites·7 claims
- 2681US7071792B2Method and apparatus for impedance matching in an amplifier using lumped and distributed inductanceTROPIAN INC·Filed 2001·Granted Jul 4, 2006·19 cites·22 claims
- 2781US6219394B1Digital frequency sampling and discriminationTROPIAN INC·Filed 1997·Granted Apr 17, 2001·47 cites·6 claims
- 2880US7042958B2Digital time alignment in a polar modulatorTROPIAN INC·Filed 2003·Granted May 9, 2006·23 cites·11 claims
- 2980US7042282B2Power control and modulation of switched-mode power amplifiers with one or more stagesTROPIAN INC·Filed 2005·Granted May 9, 2006·5 cites·14 claims
- 3079US6356155B1Multi-band amplifier having multi-tap RF chokeTROPIAN INC·Filed 2001·Granted Mar 12, 2002·26 cites·6 claims
- 3177US6690215B2Sigma-delta-based frequency synthesisTROPIAN INC·Filed 2001·Granted Feb 10, 2004·22 cites·13 claims
- 3276US6587018B1Notch filter and methodTROPIAN INC·Filed 2001·Granted Jul 1, 2003·18 cites·2 claims
- 3374US6112071AQuadrature-free RF receiver for directly receiving angle modulated signalTROPIAN INC·Filed 1998·Granted Aug 29, 2000·35 cites·18 claims
- 3473US6760572B2Method and apparatus for combining two AC waveformsTROPIAN INC·Filed 2002·Granted Jul 6, 2004·10 cites·21 claims
- 3572US7035604B2Communications signal amplifiers having independent power control and amplitude modulationTROPIAN INC·Filed 2004·Granted Apr 25, 2006·9 cites·20 claims
- 3669US6269135B1Digital phase discriminations based on frequency samplingTROPIAN INC·Filed 1998·Granted Jul 31, 2001·56 cites·17 claims
- 3762US7027545B2Data sampler for digital frequency/phase determinationTROPIAN INC·Filed 2001·Granted Apr 11, 2006·6 cites·9 claims
- 3862US6724830B2High efficiency line driver for high crest-factor signals such as DMT/ADSL signalsTROPIAN INC·Filed 2001·Granted Apr 20, 2004·7 cites·32 claims
- 3961US6650711B1Quadrature modulation with reduced phase-error distortionTROPIAN INC·Filed 2000·Granted Nov 18, 2003·7 cites·17 claims
- 4060US6686806B2Ring VCO based on RC timingTROPIAN INC·Filed 2000·Granted Feb 3, 2004·9 cites·5 claims
- 4155US7020230B2Frequency synthesizer for dual mode receiverTROPIAN INC·Filed 2001·Granted Mar 28, 2006·3 cites·7 claims
- 4255US6522192B1Boost doubler circuitTROPIAN INC·Filed 2000·Granted Feb 18, 2003·11 cites·9 claims
- 4350US6995613B2Power distribution and biasing in RF switch-mode power amplifiersTROPIAN INC·Filed 2003·Granted Feb 7, 2006·4 cites·25 claims
- 4446US6867574B2Switch mode power supply and driving method for efficient RF amplificationTROPIAN INC·Filed 2001·Granted Mar 15, 2005·6 cites·12 claims
- 4546US2006029153A1Digital time alignment in a polar modulatorTROPIAN INC·Filed 2005·Application pending·0 cites
- 4645US6969984B2Direct phase and frequency demodulationTROPIAN INC·Filed 2000·Granted Nov 29, 2005·0 cites·8 claims
- 4742US7012984B2PLL noise smoothing using dual-modulus interleavingTROPIAN INC·Filed 2002·Granted Mar 14, 2006·2 cites·8 claims
- 4842US6724177B2Method and apparatus for accurate measurement of communications signalsTROPIAN INC·Filed 2000·Granted Apr 20, 2004·1 cites·4 claims
- 4936US6624695B2Waveform pershaping for efficiency improvements in DC to RF conversionTROPIAN INC·Filed 2001·Granted Sep 23, 2003·1 cites·25 claims
- 5036US6567491B1High efficiency line driver for high crest-factor signals such as DMT/ADSL signalsTROPIAN INC·Filed 1999·Granted May 20, 2003·7 cites·10 claims
Showing the top 50 of 51 patent records by PatentIndex Score.
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