EP 0295257 B1 19910925 - MOTOR VEHICLE AERIAL SYSTEM
Title (en)
MOTOR VEHICLE AERIAL SYSTEM
Publication
Application
Priority
GB 8605381 A 19860305
Abstract (en)
[origin: WO8705446A1] A heated window (2) of a motor vehicle is used as an aerial to receive and/or transmit vertically polarised VHF signals. The window (2) has heater wires (3, 13, 19) which run vertically along side each other between top and bottom bus-bars (4, 5, 17, 18, 23, 24). A linking and isolating circuit (25) is used to connect the wires to radio apparatus so that efficient VHF reception and/or transmission can be achieved at the same time as the window is heated by passage of dc power through the heater wires. The heater wires (3, 13, 19) may be tuned so as to resonate at the centre of the VHF band. Provision may also be made (35, 36) for isolating an AM signal. Preferably the vertical heater wires (13, 19) are connected to the bus-bars via inclined ends (15, 16, 21, 22) so that short bus-bars (17, 18, 23, 24) can be used.
IPC 1-7
IPC 8 full level
H01Q 1/12 (2006.01); H01Q 1/32 (2006.01); H01Q 1/44 (2006.01)
CPC (source: EP KR)
H01Q 1/1278 (2013.01 - EP); H01Q 1/30 (2013.01 - KR)
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
GB 2173644 A 19861015; GB 2173644 B 19890628; GB 8605381 D0 19860409; BR 8707627 A 19890314; DE 3773378 D1 19911031; EP 0295257 A1 19881221; EP 0295257 B1 19910925; GB 2209876 A 19890524; GB 2209876 B 19891228; GB 8820753 D0 19881026; JP 2565669 Y2 19980318; JP H01501747 A 19890615; JP H0681113 U 19941115; KR 880701026 A 19880413; WO 8705446 A1 19870911
DOCDB simple family (application)
GB 8605381 A 19860305; BR 8707627 A 19870304; DE 3773378 T 19870304; EP 87901567 A 19870304; GB 8700150 W 19870304; GB 8820753 A 19880304; JP 3935293 U 19930719; JP 50150887 A 19870304; KR 870701009 A 19871104