P

Inventor

LUO SIFEN

US25 patents
⚠️ This page may combine multiple inventors who share the name “LUO SIFEN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

KONINKL PHILIPS ELECTRONICS NV

11 patents
US6414553B1Jul 2, 2002

Power amplifier having a cascode current-mirror self-bias boosting circuit

KONINKL PHILIPS ELECTRONICS NV56 citations96
US6791418B2Sep 14, 2004

Capacitor coupled dynamic bias boosting circuit for a power amplifier

KONINKL PHILIPS ELECTRONICS NV30 citations92
US6486739B1Nov 26, 2002

Amplifier with self-bias boosting using an enhanced wilson current mirror biasing scheme

KONINKL PHILIPS ELECTRONICS NV42 citations92
US6492875B2Dec 10, 2002

Self-boosting circuit for a power amplifier

KONINKL PHILIPS ELECTRONICS NV32 citations88
US6657425B2Dec 2, 2003

Power measurement circuit including harmonic filter

KONINKL PHILIPS ELECTRONICS NV14 citations84
US6624700B2Sep 23, 2003

Radio frequency power amplifier for cellular telephones

KONINKL PHILIPS ELECTRONICS NV17 citations84
US6417734B1Jul 9, 2002

High-frequency amplifier circuit with negative impedance cancellation

KONINKL PHILIPS ELECTRONICS NV14 citations84
US6417735B1Jul 9, 2002

Amplifier with bias compensation using a current mirror circuit

KONINKL PHILIPS ELECTRONICS NV17 citations84
US6456163B1Sep 24, 2002

High-frequency amplifier circuit having a directly-connected bias circuit

KONINKL PHILIPS ELECTRONICS NV7 citations74
US6448855B1Sep 10, 2002

Accurate power detection circuit for use in a power amplifier

KONINKL PHILIPS ELECTRONICS NV11 citations74
US6566962B2May 20, 2003

Apparatus and method for tuning an inter-stage matching network of an integrated multistage amplifier

KONINKL PHILIPS ELECTRONICS NV0 citations52

PHILIPS ELECTRONICS NA

3 patents
US6300837B1Oct 9, 2001

Dynamic bias boosting circuit for a power amplifier

PHILIPS ELECTRONICS NA95 citations98
US6359516B1Mar 19, 2002

High-frequency amplifier circuit with independent control of quiescent current and bias impedance

PHILIPS ELECTRONICS NA24 citations92
US5828269AOct 27, 1998

High-frequency amplifier with high input impedance and high power efficiency

PHILIPS ELECTRONICS NA11 citations74

IPR LICENSING INC

2 patents
US6993299B2Jan 31, 2006

Efficiency of power amplifiers in devices using transmit beamforming

IPR LICENSING INC25 citations92
US7899414B2Mar 1, 2011

Control of power amplifiers in devices using transmit beamforming

IPR LICENSING INC7 citations84

LUO SIFEN

2 patents
US7332968B2Feb 19, 2008

Amplifier circuit having an impedance-controllable bias-boosting circuit

LUO SIFEN13 citations81
US10340852B2Jul 2, 2019

Bias boosting circuit for amplifier

LUO SIFEN0 citations27

ZIH CORP

2 patents
US9748620B2Aug 29, 2017

Structures for registration error compensation

ZIH CORP0 citations52
US8933768B2Jan 13, 2015

Structures for registration error compensation

ZIH CORP0 citations52

MEDIATEK INC

1 patent
US7365604B2Apr 29, 2008

RF amplifier with a bias boosting scheme

MEDIATEK INC45 citations92

KONINK PHILIPS ELETRONICS N V

1 patent
US6778016B2Aug 17, 2004

Simple self-biased cascode amplifier circuit

KONINK PHILIPS ELETRONICS N V34 citations91

NXP BV

1 patent
US7262666B2Aug 28, 2007

Amplifier circuit having an extended Wilson current-mirror self-bias boosting circuit

NXP BV12 citations84

COGNIO INC

1 patent
US6871049B2Mar 22, 2005

Improving the efficiency of power amplifiers in devices using transmit beamforming

COGNIO INC10 citations74

TRIQUINT SEMICONDUCTOR INC

1 patent
US9214902B2Dec 15, 2015

Bias-boosting bias circuit for radio frequency power amplifier

TRIQUINT SEMICONDUCTOR INC2 citations60