Frequency-adjustable Internet of Things terminal

• Main Authors: MENG HUIPING, WU CHENGUANG, LI WENCUI, LI XIONG, CUI PENG, CAI PEILIN, DANG FANGFANG, GUO SHAOYONG, LU JIZHAO, LI YONGJIE
• Format: Patent
• Language: Chinese; English
• Published: 07.08.2020
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention discloses a frequency-adjustable Internet of Things terminal, which comprises a signal receiving module and a frequency modulation buffer module, wherein the signal receiving module is used for receiving an output signal of a signal receiver in the frequency-adjustable Internet of Things terminal; the signal receiving module is connected with an input port of the frequency modulationbuffer module through an operational amplifier AR1; the frequency modulation buffer module uses an inductor L4 to filter out high-frequency signal components, and uses a capacitor C1 and a capacitorC2 to filter out low-frequency components of signals; a triode Q1 plays a role in amplifying the signal current; a source signal is used for replacing a reference signal in the prior art for frequencymodulation; voltage division is carried out by using a resistor R3; a triode Q3 and a capacitor C4 are used to form a time-delay circuit to synchronize frequency modulation circuit output signals; and the frequency modulation