最近在看李辑熙的KEY ISSUES IN RF/RFIC CIRCUIT DESIGN,这位老先生估计原来是做RF的,他的观点同LZ不同(好像做RF的和IC的很多观点都不同)
他的看法是: as long as the impedance of the source is not matched with the impedance of the load, the power will be reflected back and forth between
the source and the load, even if the length of runner approached to zero.
他还具体举例说明Mixer LO 端口的匹配,认为如果功率匹配对电压信号传输很重要。