(19)
(11) EP 1 709 725 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
21.03.2012 Bulletin 2012/12

(45) Mention of the grant of the patent:
08.02.2012 Bulletin 2012/06

(21) Application number: 04805945.5

(22) Date of filing: 07.12.2004
(51) International Patent Classification (IPC): 
H02M 3/335(2006.01)
(86) International application number:
PCT/GB2004/005124
(87) International publication number:
WO 2005/057769 (23.06.2005 Gazette 2005/25)

(54)

TRANSFORMER BASED VOLTAGE SUPPLY

SPANNUNGSVERSORGUNG AUF TRANSFORMATORBASIS

ALIMENTATION EN TENSION A L'AIDE D'UN TRANSFORMATEUR

(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

(30) Priority: 09.12.2003 GB 0328504

(43) Date of publication of application:
11.10.2006 Bulletin 2006/41

(73) Proprietor: Nujira Ltd.
Cambourne Cambridge CB23 6DP (GB)

(72) Inventor:
  • WILSON, Martin Paul
    Caldecote, Cambridgeshire CB3 7NY (GB)

(74) Representative: Williams, David John 
Page White & Farrer Bedford House John Street
London WC1N 2BF
London WC1N 2BF (GB)


(56) References cited: : 
GB-A- 2 398 648
   
  • ANDERSON D R ET AL: "High-efficiency high-level modulator for use in dynamic envelope tracking CDMA RF power amplifiers" 2001 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST (CAT. NO.01CH37157) IEEE PISCATAWAY, NJ, USA, vol. 3, 2001, pages 1509-1512 vol., XP002323984 ISBN: 0-7803-6538-0
  • KENNETH DIERBERGER: "Simple and Inexpensive HIgh Efficiency Power Amplifier Using New APT MOSFETs" ADVANCED POWER TECHNOLOGY, APT9403, [Online] November 1994 (1994-11), XP002323985 Retrieved from the Internet: URL:http://www.eetc.globalsources.com/ARTI CLES/2001APR/PDF1/2001APR20_AMD_RFD_AN863. PDF> [retrieved on 2005-04-08]
  • PALLAB MIDYA: "Tracking Power Converter for suply Modulation of RF Power Amplifiers" IEEE, [Online] 2001, pages 1540-1545, XP002323986 Retrieved from the Internet: URL:http://ieeexplore.ieee.org/iel5/7571/2 0629/00954338.pdf> [retrieved on 2005-04-08]
  • DAVID K. SU: "An IC for LInearizing RF Power Amplifiers Using Envelope Elimination and Restoration" IEEE JOURNAL OF SOLID-STATE CIRCUITS, [Online] 12 December 1998 (1998-12-12), pages 2252-2258, XP002323987 Retrieved from the Internet: URL:http://ieeexplore.ieee.org/iel4/4/1583 1/00735710.pdf> [retrieved on 2005-04-08]
   
Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).