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Realization of Carry Voice Signal by Ultrasonic

JIANG Kunlin(CETC No.3 Research Institute,Beijing 100015,China)  
The principle of amplitude modulation and method of generating SSB signals are illustrated.The principle of SSB signal using phase-shift method is introduced.The SSB amplitude modulation circuit which uses ultrasound to transmit speech is designed.When the high power is needed to promote load,the output SSB amplitude modulation signal is sent to power amplifier which achieve ultrasound frequency response requirements.
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