vias 中文意思是什麼
vias
解釋
比亞斯-
The basic concept of siw is that it use the top and bottom layers of metal together with two row of vias is very small compared with wavelength, the dissipation loss of radiation is very small. it acts like a rectangular waveguide filled with some dielectrics, so components which can be composed by rectangular waveguide can also composed by siw such as antenna, filter, power divider, coupler, resonator
基片集成波導的基本概念是利用基片的上下金屬板和兩排間隔一定距離的金屬孔構成波導的金屬壁，由於每排金屬孔孔間距遠小於波長，因此由縫隙泄漏的能量很小，這相當于內部填充了介質的矩形波導，所以能夠用矩形普通波導實現的結構也都可以用基片集成波導來實現，比如功分器、濾波器、天線、耦合器、振蕩器等。 -
Direct connect vias conduct so much heat away from the pin and into the plane that high temperature or long soldering time may be required to complete the joint - thermal damage could occur to both the board and the component from soldering or desoldering
在焊接時，直接連接的過孔會通過引腳把大量的熱傳導至內電層，因此完成焊接就需要很高的溫度或者延長焊接時間，這就會導致在焊接或拆焊時發生電路板或元件的損壞。 -
Themal reliefs are sometimes also used on vias very near, or in, pads of smt components for the same reason
基於同樣的原因，限熱槽也用於貼片元件內或離元件很近的焊盤。 -
Crosstalk avoidance, and many other aspects that are critical in routing practice including congestion, vias, layer preference, etc., are taken into account. a track reservation strategy is adopted in the algorithm framework to compensate the undesired effects caused by sequential routing
這些中間階段包括層分配確定線網各段所在的布線層軌道分配確定較長線段占據的軌道屏蔽插入在某些軌道上插入屏蔽線等。 -
Alas, stephen said. - per vias rectas, mr deasy said firmly, was his motto
「走正路60 ， 」迪希先生堅定地說， 「這就是他的座右銘。
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