2results about How to "Reduce common mode noise" patented technology

The utility model relates to filter protection circuit and camera of camera head, including image acquisition sensor, connecting port and image processing chip, still including TF common mode filter circuit, electrostatic protection circuit and spread spectrum IC circuit, TF common mode filter circuit is connected with image acquisition sensor, electrostatic protection circuit and TF common mode filter circuit and connecting port are connected, and the CSI the CLK port of image processing chip, the MCLK port of connecting port all are connected with spread spectrum IC circuit, application circuit of this application can reduce the common mode noise of data to the greatest extent, reduce EMI radiation, can reduce electrostatic interference data transmission, can also make the synchronous clock of protocol also have spread spectrum, thereby reducing clock radiation, this application can solve the EMI radiation emission and electrostatic protection problem of MIPI CSI -2 camera head very well, especially applicable to small, data bandwidth is high, clock frequency is high and the camera product of transmission MIPI CSI -2 protocol.

The utility model discloses a socket backplane connector, including: a terminal fitting and a terminal insulator fixedly connected with the terminal fitting, the head of the terminal fitting is provided with a plurality of groups of connecting terminals, the same group of connecting terminals is divided into grounding terminals and differential signal terminals, both sides of the terminal fitting are provided with outer shielding sheets, and the outer shielding sheets are arranged in the terminal fitting. Wherein one of the outer shielding sheets is provided with a plurality of groups of through holes at the positions of the differential signal terminals, and a plurality of groups of inner shielding sheets are arranged between the two outer shielding sheets. The two inner shielding sheets are used in cooperation with the outer shielding sheet to form a wrapping type shielding space, differential signal terminals in two adjacent groups can be isolated, the inner shielding sheets and the outer shielding sheets are grounded during use, the differential signal terminals in different groups can be shielded to prevent mutual interference, common-mode noise is reduced, and the anti-interference capability of signals is improved. Moreover, signal reflection and loss can be reduced, electromagnetic interference is effectively reduced, and the electromagnetic compatibility of the system is improved.