Global Patent Index - EP 1837950 A3

EP 1837950 A3 2007-10-17 - Multilevel and space-filling round-planes for miniature and multiband antennas

Title (en)

Multilevel and space-filling round-planes for miniature and multiband antennas

Title (de)

Raumfüllende runde Flächen mit mehreren Ebenen für Miniatur- und Mehrbandantennen

Title (fr)

Aléseuse à plusieurs niveaux et compacte pour antennes miniatures et multibandes

Publication

EP 1837950 A3 (EN)

Application

EP 07107431 A

Priority

EP 01983481 A

Abstract (en)

[origin: EP1837950A2] An antenna system includes one or more conductive elements acting as radiating elements, and a multilevel or space-filling ground-plane, wherein said ground-plane has a particular geometry which affects the operating characteristics of the antenna. The return loss, bandwidth, gain, radiation efficiency, and frequency performance can be controlled through multilevel and space-filling ground-plane design. Also, said ground-plane can be reduced compared to those of antennas with solid ground-planes.

IPC 8 full level (invention and additional information)

H01Q 1/36 (2006.01); H01Q 1/38 (2006.01); H01Q 1/48 (2006.01); H01Q 5/00 (2006.01); H01Q 9/04 (2006.01)

CPC (invention and additional information)

H01Q 1/36 (2013.01); H01Q 1/38 (2013.01); H01Q 1/48 (2013.01); H01Q 5/30 (2013.01); H01Q 9/0407 (2013.01)

Citation (search report)

  • [Y] US 6140975 A 20001031 - COHEN NATHAN [US]
  • [X] JP H10261914 A 19980929 - MURATA MANUFACTURING CO, et al
  • [E] EP 1148581 A1 20011024 - KOSAN INFORMATION & TECHNOLOGI [KR]
  • [XY] EP 0892459 A1 19990120 - NOKIA MOBILE PHONES LTD [FI]
  • [X] US 5262792 A 19931116 - EGASHIRA YOSHIMI [JP]
  • [X] EP 0519508 A1 19921223 - SUMITOMO METAL MINING CO [JP]
  • [X] EP 1026774 A2 20000809 - SIEMENS AG [DE]
  • [E] EP 1211750 A2 20020605 - TOSHIBA KK [JP]
  • [X] WO 9908337 A1 19990218 - TELENOR AS [NO], et al
  • [X] OSCHWENDTNER E ET AL: "Multi-service dual-mode spiral antenna for conformal integration into vehicle roofs", ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM, 2000. IEEE JULY 16-21, 2000, PISCATAWAY, NJ, USA,IEEE, vol. 3, 16 July 2000 (2000-07-16), pages 1532 - 1535, XP010515200, ISBN: 0-7803-6369-8
  • [X] TAESUN KIM ET AL: "A Novel Photonic Bandgap Structure for Low-Pass Filter of Wide Stopband", IEEE MICROWAVE AND GUIDED WAVE LETTERS, IEEE INC, NEW YORK, US, vol. 10, no. 1, January 2000 (2000-01-01), XP011034895, ISSN: 1051-8207
  • [X] ELAMARAN B ET AL: "A beam-steerer using reconfigurable PBG ground plane", MICROWAVE SYMPOSIUM DIGEST. 2000 IEEE MTT-S INTERNATIONAL BOSTON, MA, USA 11-16 JUNE 2000, PISCATAWAY, NJ, USA,IEEE, US, vol. 2, 11 June 2000 (2000-06-11), pages 835 - 838, XP010507466, ISBN: 0-7803-5687-X
  • [X] TZUNG-WERN CHIOU ET AL: "Designs of compact microstrip antennas with a slotted ground plane", IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM. 2001 DIGEST. APS. BOSTON, MA, JULY 8 - 13, 2001, NEW YORK, NY : IEEE, US, vol. VOL. 1 OF 4, 8 July 2001 (2001-07-08), pages 732 - 735, XP010564192, ISBN: 0-7803-7070-8
  • [X] YASUSHI HORII ET AL: "Harmonic Control by Photonic Bandgap on Microstrip Patch Antenna", IEEE MICROWAVE AND GUIDED WAVE LETTERS, IEEE INC, NEW YORK, US, vol. 9, no. 1, January 1999 (1999-01-01), XP011035399, ISSN: 1051-8207
  • [PX] WONG S ET AL: "An improved microstrip sierpinski carpet antenna", MICROWAVE CONFERENCE, 2001. APMC 2001. 2001 ASIA-PACIFIC DECEMBER 3-6, 2001, PISCATAWAY, NJ, USA,IEEE, 2001, pages 483 - 486, XP010578583, ISBN: 0-7803-7138-0
  • [L] ANGUERA J ET AL: "Enhancing the Performance of Handset Antennas by Means of Groundplane Design", ANTENNA TECHNOLOGY SMALL ANTENNAS AND NOVEL METAMATERIALS, 2006 IEEE INTERNATIONAL WORKSHOP ON CROWNE PLAZA HOTEL, WHITE PLAINS, NEW YORK MARCH 6-8, 2006, PISCATAWAY, NJ, USA,IEEE, 6 March 2006 (2006-03-06), pages 29 - 32, XP010910721, ISBN: 0-7803-9443-7

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

EP 1837950 A2 20070926; EP 1837950 A3 20071017

INPADOC legal status


2009-09-02 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20090306

2008-06-25 [AKX] PAYMENT OF DESIGNATION FEES

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2008-03-05 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20080131

2008-02-13 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20071228

2007-10-17 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2007-09-26 [AC] DIVISIONAL APPLICATION (ART. 76) OF:

- Document: EP 1425820 P

2007-09-26 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR