在高速计算机及通信技术中,必须消除信号传输中的反射现象,常用的方法是严格控制传输线特性阻抗或者使用匹配电阻。然而,使用BGA这类器件的PCB的安装密度很高、布线空间极其有限,而普通的片状电阻器要求较多的导通孔,在空间受限的情况下,引出线还会影响匹配效果。平面电阻技术为解决这个问题开辟了一 In high-speed computer and communication technology, the reflection phenomenon in signal transmission must be eliminated. The commonly used method is to strictly control the characteristic impedance of the transmission line or use the matching resistance. However, the use of BGA devices such as PCB mounting density is very high, wiring space is extremely limited, and ordinary chip resistors require more vias, space constraints, the lead will also affect the matching effect . Plane resistance technology has opened up a solution to this problem