Yajing Han

A novel EBG structure with embedded meander bridge for broadband suppression of SSN

A planar Electromagnetic Bandgap (EBG) structure with embedded meander bridge for broadband suppression of simultaneous switching noise (SSN) in power/ground plane pairs is proposed. Simulation results show that the -30 dB suppression bandwidth of the novel structure is from 500 MHz to 14.5 GHz. Effects of the proposed EBG structure on signal integrity (SI) are investigated and methods for SI improvement are also concluded. Finally, measurement results are compared with simulation results to verify the structures good performance of SSN suppression.

The SI and EMI analysis and pre-design of the sensor

The sensor is a multi-board system composed of backboard and other plugging boards. It is a crucial problem that how to assure the signal integrity (SI) for such a complex system. In this paper, we mainly discuss the various signal integrity plots of critical signals in digital circuit board and EMC problems in the multi-board sensor system. The SI and EMC conditions can be improved with the help of the simulations and analysis for the sensor system.

Signal integrity analysis of a novel Electromagnetic Bandgap structure

The influence of Electromagnetic Bandgap (EBG) structure on signal transmission has been investigated in this paper. The signal integrity in time domain and frequency domain is analyzed by S parameters and eye diagrams. The simulation results show that the signal reflection and filter are induced by periodic structure, when a single line crosses the power/ground plane, signal quality is affected seriously. Switching to differential pairs, the signal quality is improved to a certain extent. Finally, locally loading the EBG structure, not only optimizes the signal quality, but also effectively restrains the simultaneous switching noise (SSN).