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Conventionally, EBG structures are used in the printed circuit boards (PCBs) level [1]. We proposed the Pinwheel Meander-line Perforated Plane (PMPP) structure as the solution [2]. In this paper, we modify the PMPP to reduce the area and electromagnetic emission (EMI). By reducing the thickness of dielectric layers and plane from 30μm to 10μm, we reduce the number of meander-line curves from 5 to...
Switching operations of the DC-DC converter is the major source of electromagnetic emission (EMI) of power management circuits. In this paper, a design guideline for inductive snubber circuit is developed to reduce EMI of DC-DC converter. A switching loop of the DC-DC converter is modeled and ringing noise on the switching node is analyzed. Circuit schematic simulation is performed to verify the effectiveness...
The electromagnetic interference (EMI) generated from the DC-DC buck converter effects the performance of integrated circuits which receive power supply from the buck converter. In this paper, the EMI reduction techniques of DC-DC buck converter are presented. The damping resistor is applied to reduce the output noise of the buck converter. In time domain, this damping resistor technique reduces the...
As system integration in wireless portable electronic devices has increased significantly, the analysis of electromagnetic compatibility (EMC) has become important to prevent the malfunction of integrated circuits (ICs). To evaluate the radiative immunity of an integrated circuit, we employ the IEC-standardized IC stripline method. In this paper, we provide an electromagnetic immunity analysis of...
As portable electronic devices are widely used in wireless communication, analysis of RF interference becomes an essential step for IC designers. In order to test electromagnetic compatibility (EMC) of IC operating at high frequencies, IC stripline method is proposed in IEC standard. This method can be applied up to 3 GHz and covers the testing of ICs and small component. This paper represents simulation...
Delay-locked loops (DLLs) have emerged an attractive alternative to the traditional phase-locked loops (PLLs). It is essential to understand and analyze the electromagnetic susceptibility of DLLs to ensure the proper operation of the system. In order to ascertain how the performance of DLL is affected by the external noise, we design a DLL using self-biased techniques and establish the noise immunity...
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