Global Patent Index - EP 0992078 A1

EP 0992078 A1 2000-04-12 - DIPOLE ANTENNA FOR RADIOTELEPHONES

Title (en)

DIPOLE ANTENNA FOR RADIOTELEPHONES

Title (de)

DIPOLANTENNE FÜR FUNKTELEFONE

Title (fr)

ANTENNE DOUBLET POUR RADIOTELEPHONES

Publication

EP 0992078 A1 (DE)

Application

EP 98937491 A

Priority

  • DE 19726570 A
  • EP 9803643 W

Abstract (en)

[origin: DE19726570C1] The invention relates to an antenna for radiotelephones comprising a flexible cable (5), the length of which is such that the area having the greatest field strength (11) is at least 30 cm away from the radiotelephone (1). The cable of choice is a coaxial cable, the outer conductor (10) of which is a mesh wire which at its distal end (11) is turned up by about a quarter of the wave length and the inner conductor (7) of which protrudes by about a quarter of the wave length from the turned-up end (11) of the outer conductor (10). In this way a dipole antenna is created and the turned-up area (10) of the outer conductor forms a balun. The area of greatest field strength is thus sufficiently far removed from the head of the user, so that the risk of (long-term) damage to cells in the region of the user's head, especially of brain and auditory cells, is significantly reduced.

IPC 1-7 (main, further and additional classification)

H01Q 1/24; H01Q 9/16; H01Q 9/30; H04B 1/38

IPC 8 full level (invention and additional information)

H01Q 1/24 (2006.01); H01Q 9/30 (2006.01)

CPC (invention and additional information)

H01Q 9/30 (2013.01); H01Q 1/243 (2013.01); H01Q 1/245 (2013.01)

Citation (search report)

See references of WO 9859389A1

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

DE 19726570 C1 19981224; EP 0992078 A1 20000412; WO 9859389 A1 19981230; WO 9859389 A9 19990722

INPADOC legal status


2003-07-02 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20021231

2001-05-16 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010330

2000-04-12 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991208

2000-04-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT