Ultrasonic transceiver system and electronic device

An electronic device, comprising:

• a cover plate, and
• an ultrasonic transceiver system;
• wherein the cover plate is configured to receive a press by a user's finger, and the ultrasonic transceiver system is arranged under the cover plate, to detect a fingerprint pressed on the cover plate by the user's finger;
• wherein the ultrasonic transceiver system comprises:
• a signal generating circuit and an ultrasonic sensor chip;
• the signal generating circuit is composed of discrete devices and comprises:
• a pulse generating circuit and a resonant circuit;
• the pulse generating circuit is configured to receive a control signal output by the ultrasonic sensor chip, and generate, according to the control signal, a first pulse voltage signal and a second pulse voltage signal which are in opposite phase to each other;
• and the resonant circuit is configured to receive the first pulse voltage signal and the second pulse voltage signal which are in opposite phase to each other, and generate a drive signal according to the first pulse voltage signal and the second pulse voltage signal which are in opposite phase to each other;
• and
• the ultrasonic sensor chip is configured to receive the drive signal and generate an ultrasonic signal according to the drive signal.