Impedance matching system
专利汇可以提供Impedance matching system专利检索，专利查询，专利分析的服务。并且PURPOSE:To use a low cost changeover switch by connecting a changeover switch and termination resistors with plural impedances to the secondary side of an impedancematching transformer. CONSTITUTION:The changeover switch 3 selects one of the termination resistors R1-R3 having different impedances. Thus, the impedance matching of the interface is attained by controlling the changeover switch 3 by a proper means and selecting the termination resistors R1-R3 in response to the impedance of a transmission line. That is, when the transformer 1 is an ideal transformer, the impedance viewed from the primary side is expressed as Z0=(1/n )Z1, where (n) is the winding ratio and Z1 is the impedance at the secondary side. Then the system is applied to a transmission line having various impedances by switching properly the Z1, that is, selecting properly the value of the R1-R3. Since the changeover means is not almost damaged by a surge invaded to the primary side, a safe matching is applied.，下面是Impedance matching system专利的具体信息内容。
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