| 摘要 |
FIELD: radio communications; space and ground frequency-reuse radio links. ^ SUBSTANCE: proposed two-way radio link incorporates provision for correcting local-source noise signal by means of negative feedback rings. It has two identical transceivers I, II. Each transceiver has main-message generator 1, power splitter 2, amplitude modulators 3, 4, antiphase amplifier 5, antenna A1, circulators 8, 11, adder 12, subtraction unit 13, synchronous detectors 14, 25, 34, amplitude limiter 15, main-message demodulator 16, directional couplers 17, 19, 21, 22, 28, 35, 37, 39, 40, 31, controlled phase shifters 18, 36, controlled attenuators 20, 38, phase shifters 23, 32, integrators 24, 26, 33, 29, and phase detectors 27, 30. ^ EFFECT: reduced cost due to use of two antennas for two-way communications. ^ 1 cl, 2 dwg |
