Power supply circuit for an active antenna of a vehicle radio

Details Power supply circuit for an active antenna of a vehicle radio Power supply circuit for an active antenna of a vehicle radio

1993-02-19

1994-07-26

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including particular power supply circuitry

330298, 330207P, H03F 304

Patent

active

053329775

ABSTRACT:
A power supply circuit provides power to an antenna amplifier (4) of a vehicle radio via the antenna bushing (A) and the antenna cable (6). The circuit is resistant to short-circuits and has a pair of signal terminals (K2, K3) from which information, about the type of attached antenna and about its operating state, can be picked up.

REFERENCES:
patent: 3965426 (1976-06-01), Ringland
Siegfried W. Best, Aktive Antennen fur DX-Empfang [Active Antennas for DX-Reception], RPB Electronic Pocket Book, published by Frantzis publishing house, Germany, 1982, pp. 85-86 and FIG. 3.26, showing arrangement of supplemental power supply circuit and broadband amplifier between active antenna and receiver input.

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