COHERENT RADIO LINE Russian patent published in 2006 - IPC H04L27/32 

FIELD: radio engineering, possible use for transfer of confidential analog and discontinuous information with use of complicated signals with combined amplitude modulation, phase and frequency modulations.

SUBSTANCE: transmitting part of coherent radio line contains sources of discontinuous messages 1,6, encoding device 2, digital scramblers 3,7, high frequency generator 4, phase manipulator 5, frequency manipulator 8, source of analog messages 9, analog scrambler 10, amplitude modulator 11, transmitter 12, antenna 13. Receiving part contains antenna 14, receiver 15, searching block 16, heterodyne 17, mixer 18, intermediate frequency amplifier 19, detector 20, consisting of spectrum width meters 21,23, phase doubler 22, comparison block 24, threshold block 25, delay line 26, and also key 27, amplitude limiters 28, 32, synchronous detector 29, analog descrambler 30, registration block 21, phase-locked loop system 33, 34, dividers of phase by two 35, 36, narrowband filters 37,38, frequency demodulator 39, digital descramblers 40, 46, phase detector 41, 42, 45, adder 43, generator 44.

EFFECT: extended functional capabilities of radio line due to transfer of confidential discontinuous and analog messages by means of signals with complicated type of modulation.

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