WO2007069193A3 - Polar modulation system - Google Patents

Polar modulation system Download PDF

Info

Publication number
WO2007069193A3
WO2007069193A3 PCT/IB2006/054763 IB2006054763W WO2007069193A3 WO 2007069193 A3 WO2007069193 A3 WO 2007069193A3 IB 2006054763 W IB2006054763 W IB 2006054763W WO 2007069193 A3 WO2007069193 A3 WO 2007069193A3
Authority
WO
WIPO (PCT)
Prior art keywords
signal
base
pulse width
band
width modulated
Prior art date
Application number
PCT/IB2006/054763
Other languages
French (fr)
Other versions
WO2007069193A2 (en
Inventor
Gerben W Jong
Jan Vromans
Original Assignee
Nxp Bv
Gerben W Jong
Jan Vromans
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nxp Bv, Gerben W Jong, Jan Vromans filed Critical Nxp Bv
Priority to EP06842443A priority Critical patent/EP1969797A2/en
Publication of WO2007069193A2 publication Critical patent/WO2007069193A2/en
Publication of WO2007069193A3 publication Critical patent/WO2007069193A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H04L27/361—Modulation using a single or unspecified number of carriers, e.g. with separate stages of phase and amplitude modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H03F1/3252—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using multiple parallel paths between input and output
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H03F3/2173—Class D power amplifiers; Switching amplifiers of the bridge type

Abstract

A system and a method for polar modulation achieved via generation of a multi-level pulse width modulated signal. The system in overview comprises a base-band pre-distortion element (115) producing a pre-distorted signal carrying the amplitude information of the base-band signal, two comparators (140,150) providing two inter-related pulse width modulated signals and a combination and amplification stage (160) that provides a third pulse width modulated radio frequency signal carrying the amplitude and the phase of the base-band signal. The first and second comparators compare a radio -frequenc signal carrying the phase information of the base-band signal with the pre-distorted signal and an inverted copy of the pre-distortion signal respectively.
PCT/IB2006/054763 2005-12-15 2006-12-12 Polar modulation system WO2007069193A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06842443A EP1969797A2 (en) 2005-12-15 2006-12-12 Polar modulation system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05112209.1 2005-12-15
EP05112209 2005-12-15

Publications (2)

Publication Number Publication Date
WO2007069193A2 WO2007069193A2 (en) 2007-06-21
WO2007069193A3 true WO2007069193A3 (en) 2008-01-31

Family

ID=38020356

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/054763 WO2007069193A2 (en) 2005-12-15 2006-12-12 Polar modulation system

Country Status (3)

Country Link
EP (1) EP1969797A2 (en)
CN (1) CN101375574A (en)
WO (1) WO2007069193A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9172329B2 (en) 2012-08-01 2015-10-27 Nxp B.V. Harmonic suppression in switching amplifiers
EP3672069B1 (en) * 2018-12-21 2022-06-22 Nxp B.V. A power amplifier and method of operating a power amplifier

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5115203A (en) * 1990-06-25 1992-05-19 Rockwell International Corporation Digital power amplifier
EP1271870A2 (en) * 2001-06-29 2003-01-02 Nokia Corporation Switching mode power amplifier using PWM and PPM for band pass signals
WO2004100356A2 (en) * 2003-05-09 2004-11-18 Danmarks Tekniske Universitet Global loop integrating modulator
US20050007194A1 (en) * 2003-07-08 2005-01-13 Icefyre Semiconductor Corporation Switched-mode power amplifier using lumped element impedance inverter for parallel combining

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5115203A (en) * 1990-06-25 1992-05-19 Rockwell International Corporation Digital power amplifier
EP1271870A2 (en) * 2001-06-29 2003-01-02 Nokia Corporation Switching mode power amplifier using PWM and PPM for band pass signals
WO2004100356A2 (en) * 2003-05-09 2004-11-18 Danmarks Tekniske Universitet Global loop integrating modulator
US20050007194A1 (en) * 2003-07-08 2005-01-13 Icefyre Semiconductor Corporation Switched-mode power amplifier using lumped element impedance inverter for parallel combining

Also Published As

Publication number Publication date
CN101375574A (en) 2009-02-25
EP1969797A2 (en) 2008-09-17
WO2007069193A2 (en) 2007-06-21

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