| 摘要 |
FIELD: radio engineering, communication.SUBSTANCE: invention relates to high-speed modulators and can be used in on-board transmitters of a satellite communication system and in earth remote probing systems. The high-speed on-board modulator comprises main and backup buffers, a programmable logic integrated circuit, read-only memory, a frequency synthesizer, three digital-to-analogue converters, a quadrature modulator, a rectifier, a temperature sensor, an amplifier and an attenuator.EFFECT: controlling output signal power, generating any phase, amplitude-phase and quadrature-amplitude-modulation, performing digital processing of transmitted data, high data rate.2 dwg |
