EP 0269924 B1 19940126 - Compensation amplifier for an automobile antenna.
Title (en)
Compensation amplifier for an automobile antenna.
Title (de)
Kompensationsverstärker für eine Autoantenne.
Title (fr)
Amplificateur à compensation pour antenne à bord d'un véhicule.
Publication
Application
Priority
JP 27821186 A 19861121
Abstract (en)
[origin: EP0269924A2] A compensation amplifier for an automobile antenna utilizing, as an antenna element, a heating wire incorporated in an automobile rear window, for removing fog formed thereon, is connected between the heating wire and a radio receiver circuit, so as to compensate for a signal transmission loss. An AM band-pass filter coil (La1), a cancelling coil (Lc), and an FM band-pass filter coil (Lf1) are connected between the heating wire (H) and the battery (B). The FM band-pass filter coil (Lf1) and the AM band-pass filter coil (La1) are wound on a toroidal core with air gaps. A floating capacitor (Cs) is connected between the heating wire (H) and a ground potential terminal. The FM band-pass filter coil (Lf1) and floating capacitor (Cs) are used as a part of an input band-pass filter for an FM signal compensation circuit. The AM band-pass filter coil (La1), the floating capacitor (Cs), and an additional capacitor (Cb) are used as a part of an input band-pass filter for an AM signal compensation circuit.
IPC 1-7
IPC 8 full level
B60S 1/02 (2006.01); H01Q 1/12 (2006.01); H01Q 1/32 (2006.01); H01Q 1/44 (2006.01); H04B 1/18 (2006.01)
CPC (source: EP)
H01Q 1/1278 (2013.01)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0269924 A2 19880608; EP 0269924 A3 19891227; EP 0269924 B1 19940126; AU 586938 B2 19890727; AU 8097787 A 19880609; DE 3788938 D1 19940310; DE 3788938 T2 19940505; JP H0445019 B2 19920723; JP S63131704 A 19880603
DOCDB simple family (application)
EP 87116690 A 19871112; AU 8097787 A 19871110; DE 3788938 T 19871112; JP 27821186 A 19861121