Electromagnetic band gap structure for achieving ultra-wideband suppression of synchronous switching noise

An electromagnetic bandgap structure and synchronous switching noise technology, applied in the reduction of crosstalk/noise/electromagnetic interference (, circuit devices, electrical components, etc., can solve the problem of increasing the suppression bandwidth of the lower cut-off frequency, high lower cut-off frequency, narrow bandwidth, etc. question

Active Publication Date: 2019-08-30
HANGZHOU DIANZI UNIV
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  • Abstract
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Problems solved by technology

The commonly used planar EBG structure is to etch a bandgap structure on the power plane to suppress synchronous switching noise, but the current electromagnetic bandgap structure has a narrow bandwidth and a high lower cutoff fre

Method used

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  • Electromagnetic band gap structure for achieving ultra-wideband suppression of synchronous switching noise
  • Electromagnetic band gap structure for achieving ultra-wideband suppression of synchronous switching noise
  • Electromagnetic band gap structure for achieving ultra-wideband suppression of synchronous switching noise

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with specific embodiments of the accompanying drawings.

[0023] Such as figure 1 Shown is a schematic diagram of the basic unit of the structure of the present invention, the basic unit structure is a rectangular notch etched on each side of the power supply plane, the height of the left side wall of the rectangular notch is smaller than the height of the right side wall, and a micro Strip line; the microstrip line goes around the power plane in a counterclockwise direction to the end of its next side, and the microstrip line is located in the "next side" part, and the microstrip line drawn from the rectangular notch of this side is located in this side part surrounded; at the same time, the microstrip line is connected to the microstrip line of the adjacent structural unit; the center of the microstrip line drawn out from the above four rectangular gaps is arranged symmetrically. A small s...

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Abstract

The invention discloses an electromagnetic band gap structure for achieving ultra-wideband suppression of synchronous switching noise. The electromagnetic band gap structure is characterized in that arectangular notch is etched on each side of a power plane, and a microstrip line is led out from the middle point of the bottom of the notch; the microstrip line surrounds the power plane to the tailend of the next side in a counterclockwise direction, and the part of the microstrip line positioned at the next side surrounds the part of the microstrip line positioned at the side, which is led out from the rectangular notch at the side; the microstrip line is connected with the microstrip line of the adjacent structural unit to form an S shape; the central area of the power plane is hollow, and a square plane plate is inlaid in the central area; a rectangular notch is etched in the center of each of four sides of the square plane plate, and a microstrip line is led out from the middle point of the bottom of the rectangular notch and connected with the power plane. The electromagnetic band gap structure better reduces the lower cut-off frequency of noise suppression and effectively enlarges the bandwidth range of noise suppression, thereby achieving the ultra-wideband suppression of the synchronous switching noise between the power plane and a ground plane.

Description

technical field [0001] The invention relates to the technical field of electronic devices, in particular to an electromagnetic bandgap structure for realizing ultra-wideband suppression of synchronous switching noise. Background technique [0002] With the rapid development of microelectronics technology and communication technology, digital systems are developing towards higher speed and lower power, and the simultaneous switching noise (Simultaneous Switching Noise, SSN) between the power supply and the ground plane will cause serious signal and Power integrity issues. Since the SSN is mainly transmitted through the Power Delivery Network (PDN), in the design of the PDN, it is also important to suppress the propagation of the SSN in the wide stop band related to the good signal, so that the entire circuit system can work more reliably. one of the tasks. [0003] In order to suppress the propagation of SSN in the system, the SSN suppression methods currently designed incl...

Claims

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Application Information

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IPC IPC(8): H05K1/02
CPCH05K1/0236H05K2201/093
Inventor 张园园赵文生王晶王高峰
Owner HANGZHOU DIANZI UNIV
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