RADIO TRANSMISSION LINE USING FREQUENCY RECYCLING Russian patent published in 2000 - IPC

FIELD: radio communication. SUBSTANCE: transmitting part of device has signal generator for main messages, power distributor, first and second amplitude modulators, paraphase amplifier, and transmitting antenna. Receiving part of device has receiving antenna, adder, subtraction unit, synchronous detector, amplitude clipper, demodulator of main messages, narrow-band low-pass filter, and device for polarization rotation. However, transmission of increased information amount requires increase in transmission rate or number of radio channels. This in both cases results in increased radio bandwidth. At the moment, complete set of radio frequencies, starting from very low frequency up to microwaves, is overloaded. Thus, allocation of radio frequency set is more and more problematic. Goal of invention is achieved by carrier frequency oscillator and clock oscillator, generator of orthogonal pseudorandom sequence, generator of pseudorandom sequence, phasing unit, first and second multipliers, adder, generator of carrier frequencies, commutator, two mixers, two band-pass filters, and two gates, which are introduced at transmitting part of device. Also, two multipliers, two band-pass filters, recirculation unit, gate, reference generator with clock shaping, synchronizer, solving circuit, quarter phase shifter and phase detector are introduced at the receiving part of device to accomplish the goal of invention. EFFECT: transmission of additional information. 2 dwg