Motor vehicle used as antenna - has input of four pole connected between roof and underframe and two reactances in four pole chosen for correct impedance matching
DE2717480A1
Directional aerial array formed by V=shaped rods - has limbs formed by symmetrically bent sections in same plane
DE2706394A1
HF transistorised power generator - has two auxiliary circuits optimising output stage current and voltage swings by comparing with reference
DE2701412A1
Receiving station with active antenna - includes antenna amplifier whose gain is controlled by variable derived from level of received signal
DE2655436A1
Funnel shaped aerial system with metal walls - has two sections joined at kink, with funnel cross=section gradually increasing
DE2634111A1
Directional receiver antenna array - has two individual antennae which have single phase centre on reception from specified space angle
DE2613107A1
Incidence direction measurement system - is for electromagnetic waves and uses group of passive aerials connected via switches
DE2613055A1
Incidence direction determination system - is for electromagnetic waves and uses different signal delays
DE2558862A1
Active radio aerial for motor vehicle - has extra filters designed to prevent unwanted signals from entering given signal paths
DE2558834A1
Active receive aerial with controlled second DC source - supplies varying current to game of FET coupled to passive rod aerial
DE2554828A1
Car receiving aerial with negative feedback amplifier - has passive network connected to output aerial cable forming minimum impedance with transistor
DE2554829A1
Active reception aerial for long medium and short waves - is used for motor vehicles and has active three terminal network
DE2552043A1
Directional aerial system - consists of curved aerial rods whose length is greater than half wavelength
DE2529994A1
Vehicle receiving aerial interference suppression facility - has additional conductors on vehicle window pane near heater elements
DE2460227A1
Receiving station for electromagnetic waves - antenna near one or several sources of interference signals e.g. sending antennae
DE2454807A1
Directional receiver for electromagnetic radiation - with low-noise individual transmission paths avoiding narrow band resonances
DE2446631A1
Active receive rod aerial - is connected to FET amplifier whose output feeds cable coupled to receiver appts.
DE2462440A1
Antenna for wide frequency range below 30 MHz - has conducting base plate, and antenna rods and amplifiers
DE2438672A1
Reception station with one or several active aerials - has each separate aerial consisting of passive aerial and amplifier system
DE2429628A1
Windscreen radio aerial for motor vehicles - has inverted T-shape with amplifier between aerial wire junction and windscreen frame
