EP 1179221 A1 20020213 - ANTENNA WITH AT LEAST ONE VERTICAL RADIATOR
Title (en)
ANTENNA WITH AT LEAST ONE VERTICAL RADIATOR
Title (de)
ANTENNE MIT WENIGSTENS EINEM VERTIKALSTRAHLER
Title (fr)
ANTENNE COMPORTANT AU MOINS UN RADIATEUR VERTICAL
Publication
Application
Priority
- DE 19922699 A 19990518
- EP 0004449 W 20000517
Abstract (en)
[origin: DE19922699A1] In an antenna having at least one vertical radiator, preferably a vehicle mobile radiotelephone antenna, the at least one vertical radiator is connected to the ground on one end and to a vertical conductor fed against the ground on the other end by means of an impedance transforming device having an electrical length which is approximately one fourth the mean operating wavelength or an uneven multiple thereof. Said structure makes it possible for the at least one vertical radiator to have a uniform current occupancy over its entire length. By cooperating with the vertical conductor fed in a co-radiating manner, said occupancy exhibits high radiation power comparable to that of a lambda /4 monopole antenna despite the fact that the at least one vertical radiator has a smaller length which is approximately 1/10 of the mean operating wavelength. The invention also describes advantageous embodiments or configurations of said antenna and practical arrangements of said antenna in vehicles.
IPC 1-7
IPC 8 full level
H01Q 1/12 (2006.01); H01Q 1/22 (2006.01); H01Q 1/32 (2006.01); H01Q 1/36 (2006.01); H01Q 9/40 (2006.01); H01Q 13/08 (2006.01); H01Q 19/13 (2006.01)
CPC (source: EP US)
H01Q 1/1271 (2013.01 - EP US); H01Q 19/13 (2013.01 - EP US)
Citation (search report)
See references of WO 0070711A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
DE 19922699 A1 20001207; DE 19922699 C2 20010517; EP 1179221 A1 20020213; JP 2003500871 A 20030107; US 6624794 B1 20030923; WO 0070711 A1 20001123
DOCDB simple family (application)
DE 19922699 A 19990518; EP 0004449 W 20000517; EP 00935045 A 20000517; JP 2000619057 A 20000517; US 97916802 A 20020117