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using two quadrature frequency conversion stages in cascade
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H03C3/403
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ELECTRICITY
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Electronic circuits
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MODULATION
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Angle modulation
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H03C3/403
using two quadrature frequency conversion stages in cascade
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Patents Grants
last 30 patents
Information
Patent Grant
Envelope detector-based feedback for radio frequency (RF) transmitters
Patent number
10,333,764
Issue date
Jun 25, 2019
Intel Corporation
David Arditti Ilitzky
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Modulation and demodulation of band-limited signals using near-Nyqu...
Patent number
8,401,108
Issue date
Mar 19, 2013
L-3 Communications Corp.
Osama S. Haddadin
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
IQ-modulation
Patent number
7,999,629
Issue date
Aug 16, 2011
Infineon Technologies AG
Timo Gossmann
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Tuner for radio frequency receivers and associated method
Patent number
7,548,742
Issue date
Jun 16, 2009
Silicon Laboratories, Inc.
Richard A. Johnson
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Active 90-degree phase shifter with LC-type emitter degeneration an...
Patent number
7,463,108
Issue date
Dec 9, 2008
National Sun Yat-Sen University
Tzyy-Sheng Horng
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Mixer circuit for direct conversion transceiver with improved IP2
Patent number
7,457,606
Issue date
Nov 25, 2008
Samsung Electronics Co., Ltd.
Young-Jin Kim
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Tuner using a direct digital frequency synthesizer, television rece...
Patent number
7,425,995
Issue date
Sep 16, 2008
Silicon Laboratories, Inc.
Richard A. Johnson
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Mixing DAC architectures for a radio frequency receiver
Patent number
7,358,885
Issue date
Apr 15, 2008
Silicon Laboratories, Inc.
Adrian Maxim
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Wideband quadrature generation technique requiring only narrowband...
Patent number
7,346,124
Issue date
Mar 18, 2008
Samsung Electronics Co., Ltd.
Mohsen Abdellaoui
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Modulator/transmitter apparatus and method
Patent number
7,289,573
Issue date
Oct 30, 2007
The Queens University of Belfast
Vincent Francis Fusco
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Modulation system for modulating data onto a carrier signal with of...
Patent number
7,167,528
Issue date
Jan 23, 2007
General Instrument Corporation
Keming Joseph Chen
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Mixer circuit with spurious rejection by using mismatch compensation
Patent number
7,155,180
Issue date
Dec 26, 2006
Integrant Technologies Inc.
Youngjin Kim
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Transmitter with transmitter chain phase adjustment on the basis of...
Patent number
7,058,139
Issue date
Jun 6, 2006
Koninklijke Philips Electronics N.V.
David Benoit Didier Duperray
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Wireless transmitter
Patent number
7,035,603
Issue date
Apr 25, 2006
Terax Communication Technologies, Inc.
Jinn-Ja Chang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Local oscillator and mixer for a radio frequency receiver and relat...
Patent number
6,778,117
Issue date
Aug 17, 2004
Silicon Laboratories, Inc.
Richard A. Johnson
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
System and method for generating balanced modulated signals with ar...
Patent number
6,768,390
Issue date
Jul 27, 2004
Agilent Technologies, Inc.
Joel P. Dunsmore
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Double up-conversion modulator
Patent number
6,728,527
Issue date
Apr 27, 2004
Asulab S.A.
Arnaud Casagrande
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Radiofrequency transmitter with a high degree of integration and po...
Patent number
6,668,024
Issue date
Dec 23, 2003
France Telecom
Eric Andre
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal estimator and program stored memory medium
Patent number
6,587,521
Issue date
Jul 1, 2003
NEC Corporation
Hitosi Matui
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Data converter
Patent number
6,356,594
Issue date
Mar 12, 2002
Motorola, Inc.
Patrick Clement
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Orthogonal modulator having a modulation mixer
Patent number
6,347,221
Issue date
Feb 12, 2002
Fujitsu Limited
Masahiro Tsukahara
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Quadrature modulator and demodulator
Patent number
6,240,142
Issue date
May 29, 2001
QUALCOMM Incorporated
Ralph E. Kaufman
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Up-conversion mechanism employing side lobe-selective pre-distortio...
Patent number
5,930,301
Issue date
Jul 27, 1999
Harris Corporation
David B. Chester
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Single sideband double quadrature modulator
Patent number
5,861,781
Issue date
Jan 19, 1999
Lucent Technologies Inc.
Kirk Burton Ashby
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Modulator circuit
Patent number
5,706,311
Issue date
Jan 6, 1998
Lucent Technologies Inc.
Mikio Koyama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Quadrature local oscillator network
Patent number
5,412,351
Issue date
May 2, 1995
Christian Nystrom
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for quadrature modulation
Patent number
4,816,783
Issue date
Mar 28, 1989
Motorola, Inc.
Clifford D. Leitch
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Baseband linearizer for wideband, high power, nonlinear amplifiers
Patent number
4,462,001
Issue date
Jul 24, 1984
Canadian Patents and Development Limited
Henri Girard
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
IQ-Modulation
Publication number
20100225409
Publication date
Sep 9, 2010
INFINEON TECHNOLOGIES AG
Timo Gossmann
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Active 90-degree phase shifter with LC-type emitter degeneration an...
Publication number
20070241835
Publication date
Oct 18, 2007
NATIONAL SUN YAT-SEN UNIVERSITY
Tzyy-Sheng Horng
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
MIXING DAC ARCHITECTURES FOR A RADIO FREQUENCY RECEIVER
Publication number
20070085719
Publication date
Apr 19, 2007
SILICON LABORATORIES, INC.
Adrian Maxim
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Multi-mode modulator and transmitter
Publication number
20060141952
Publication date
Jun 29, 2006
SiRiFIC Wireless Corporation
William Kung
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Mixer circuit for direct conversion transceiver with improved IP2
Publication number
20050170806
Publication date
Aug 4, 2005
SAMSUNG ELECTRONICS CO., LTD.
Young-Jin Kim
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Modulator/transmitter apparatus and method
Publication number
20050152469
Publication date
Jul 14, 2005
Vincent Francis Fusco
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Tuner using a direct digital frequency synthesizer, television rece...
Publication number
20050117071
Publication date
Jun 2, 2005
Silicon Laboratories, Inc.
Richard A. Johnson
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Wideband quadrature generation technique requiring only narrowband...
Publication number
20050013344
Publication date
Jan 20, 2005
SAMSUNG ELECTRONICS CO., LTD.
Mohsen Abdellaoui
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Tuner for radio frequency receivers and associated method
Publication number
20040176058
Publication date
Sep 9, 2004
Richard A. Johnson
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Wireless transmitter
Publication number
20040166816
Publication date
Aug 26, 2004
Jinn-Ja Chang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Modulation system for modulating data onto a carrier signal with of...
Publication number
20030227982
Publication date
Dec 11, 2003
Keming Joseph Chen
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Mixer circuit with spurious rejection by using mismatch compensation
Publication number
20030143966
Publication date
Jul 31, 2003
Youngjin Kim
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Transmitter with transmitter chain phase adjustment on the basis of...
Publication number
20030095608
Publication date
May 22, 2003
Koninklijke Philips Electronics N.V.
David Benoit Didier Duperray
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Double up-conversion modulator
Publication number
20030011861
Publication date
Jan 16, 2003
ASLAB S.A.
Arnaud Casagrande
H03 - BASIC ELECTRONIC CIRCUITRY