WO2007069193A3 - Polar modulation system - Google Patents

Polar modulation system Download PDF

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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
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/IB2006/054763
Other languages
French (fr)
Other versions
WO2007069193A2 (en
Inventor
Gerben W Jong
Jan Vromans
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NXP BV
Original Assignee
NXP BV
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 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
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Amplifiers (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

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 Ceased 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 Ceased 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 (3)

* 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
EP3968526A1 (en) * 2020-09-14 2022-03-16 Nokia Technologies Oy Radio frequency transmission chains

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

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