Faint signal detection circuit of high frequency

• Main Authors: RU GAIGE, ZHANG FEILONG, YAO YOUFENG, XU ZHIYUAN, JI TIANTIAN, LI ZEBIN, WU QIANQIAN, TAO WEN
• Format: Patent
• Language: English
• Published: 24.02.2016
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The utility model discloses a faint signal detection circuit of high frequency, including integrating circuit N1, opposition ratio circuit N2, opposition summing circuit N3, multiplaying circuit N4, opposition ratio circuit N5 and integrating circuit N6, integrating circuit N1 and cycle driving force, noise and measured signal link to each other, and the signal is given opposition ratio circuit N2 and is handled after integrating circuit N1 handles, handle the back signal and carry all the way and carry out the total mark for integrating circuit N6 and handle, carry all the way and handle for opposition summing circuit N3, the processing for opposition ratio circuit N5 is carried to signal through integrating circuit N6 handles, gives multiplaying circuit N4 all the way with the signal after the processing and handles, gives integrating circuit N1 all the way and handles, the signal that opposition ratio circuit N2 and multiplaying circuit N4 handled is given opposition summing circuit N3 and is handled, integrating circuit N1 is sent back to to signal after opposition summing circuit N3 handles. Whether the phase transition takes place for the phase diagram through observing detection circuitry output, determines whether there is the high frequency small signal among the measured signal.