2results about How to "Lower input impedance" patented technology

The utility model discloses a kind of dual-path voice simultaneous transmission wireless transceiving systems, including transmitting part and receiving part, the transmitting part includes sequentially connected low-frequency amplification circuit, frequency synthesis oscillation circuit, resonant hybrid circuit and impedance matching transmitting circuit, the receiving part includes sequentially connected signal receiving circuit, frequency modulation circuit, mixing frequency discriminator circuit and power amplifier circuit, the impedance matching transmitting circuit is connected with the signal receiving circuit communication, the low-frequency amplification circuit receives dual-path voice input signal, the power amplifier circuit outputs dual-path voice signal;The utility model is characterized in that: the immediacy of communication is higher.

The present disclosure provides a terahertz wave imaging system and method, the system comprising: a terahertz detector (A) for detecting a terahertz modulated light signal and sampling the terahertz modulated light signal by using a demodulation signal to obtain a sampling signal; a CSA integration module (B) for sequentially integrating and amplifying the sampling signal to obtain a photocurrent signal; a signal processing module (C) for processing the photocurrent signal to obtain a sampling value, calculating the time of flight and depth information of the terahertz modulated light signal according to the sampling value, and imaging by using the time of flight and depth information; wherein the demodulation signal has a phase offset with the terahertz modulated light signal. The terahertz wave imaging system of the present disclosure can be made on the same CMOS chip, has simple design principle, high precision, low cost, and is easy to mass integrate.