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This paper presents a fast prediction method to evaluate the near-field shielding effectiveness (SE) for conformal-shielded System-in-Packages (SiP). By revising the typical EM method to meet SiP circumstances, the near-field SE can be quickly estimated. A simple conformal-shielded SiP module is designed. To experimentally verify the proposed method, two kinds of metallic shielding materials, copper...
In order to efficiently eliminate the noise generated from high-speed integrated circuits, the conformal shielding technology is gradually utilized in advanced System-in-Package (SiP). In this paper, a prediction method based on the transmission-line theory is proposed for evaluating shielding effectiveness (SE) of conformal shielding on SiP. SE measurement of various coating materials is done and...
A compact solution for filtering common-mode noise on high-speed digital interfaces is proposed and realized as a 6-pin SMD component. The component size is only 2 × 1.2 mm2. The measured common-mode suppression has a high-level rejection over 20 dB at 1.575 and 2.45 GHz, corresponding to GPS and WLAN bands. Moreover, differential-mode signals preserve well up to 10 GHz. To validate its capability,...
Non-Foster networks have the potential to provide wideband matching to electrically-small antennas. Impedance data from a model of an electrically-small monopole provides the starting point of this work. A lumped-element model of the monopole is developed, and used to design a matching network using a shunt negative capacitor and L-section subnetwork. The resulting network provides a larger bandwidth...
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