Increase of Common-Mode Radiation due to Guard Trace Voltage and Determination of Effective Via-Location
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چکیده
منابع مشابه
Increase of Common-Mode Radiation due to Guard Trace Voltage and Determination of Effective Via-Location
A guard trace placed near a signal line reduces commonmode radiation from a printed circuit board. The reduction effect is evaluated by the imbalance difference model, which was proposed by the authors, when the guard trace has exactly the same potential as the return plane. However, depending on interval of ground connection of the guard trace, the radiation can increase when the guard trace r...
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The common-mode (CM) current due to a trace near the PCB edge and across a slit in the ground plane is treated experimentally and by FDTD modeling. The width of the slit was 2 mm and the length was varied. The effect of a guard band with a 5 mm width is also discussed. As the slit length becomes longer, |S21| related to the CM current significantly increases. When the slit penetrates to the cen...
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15 صفحه اولSuppression of Guard-Trace Resonance by Matched Termination for Reducing Common-Mode Radiation
We propose a novel technique of matching at both ends of the guard trace to suppress resonance. This approach is derived from the viewpoint that the guard trace acts as a transmission line. We examined that matched termination suppresses guard-trace resonance through simulating a circuit and measuring radiation. We found from these results that the proposed method enables guard-trace voltages t...
متن کاملReduction of Common-mode Radiation by Terminating Guard Trace with Resistors
A microstrip structure with a narrow return plane generates large common-mode radiation. The guard trace attached near the signal line can reduce common-mode radiation. In general, the guard trace needs a lot of via connections to the return plane for keeping the guard trace grounded. The guard trace with long intervals of vias causes resonance and additional radiation. We propose a novel techn...
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ژورنال
عنوان ژورنال: IEICE Transactions on Communications
سال: 2009
ISSN: 0916-8516,1745-1345
DOI: 10.1587/transcom.e92.b.1929