Device for supplying a radionavigation system of the Doppler VOR type and a Doppler VOR system comprising said device
AssigneeThomson-CSF
InventorsHenri Becavin, Alain Grousseau
Life of this patent
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Abstract
The device for supplying a Doppler VOR system comprises means for generating the sidebands of an amplitude modulation of a VHF carrier wave, the signals representing the sidebands being amplitude-modulated by a periodic voltage. The device essentially comprises means for coupling and means for adding the amplitude-modulated sidebands so as to produce a signal for supplying antennas having a predetermined spectrum and to compensate for the couplings which exist between the antennas.
Claims10
A device for supplying a radionavigation system of the Doppler VOR type for radiating in particular the two sidebands of an amplitude modulation of a VHF carrier wave, comprising means for generating the sidebands, and said means in the case of each sideband comprising a generator and two modulator-amplifiers for amplitude-modulating the signal derived from the generator by means of a periodic voltage F(t), a device for switching the N.sub.o antennas of the circular array which radiates said sidebands, in said Doppler VOR said device comprising means for coupling and means for adding the amplitude-modulated sidebands so as to produce a signal having a predetermined spectrum for supplying said antennas and to compensate for the coupling existing between said antennas.
Dependencies are inferred from the claim text.