[工學(xué)]chapter18英文版電路二端口網(wǎng)絡(luò)-資料下載頁(yè)
2025-01-19 10:52本頁(yè)面
【正文】 21UUYII??????????????????????????????212121IIIIII?????????????????????????????2121UUYUUY ????111 UUU ???? ????? 222 UUU ??? ??????????????????????2121 )(UUYYII???? YYY ????? cascade connection of two twoport works 11 UU ?? ?? 2U??11 II ??? 2I??+ + 1U???+ + 1I??? 22II ?? ???22 UU ?? ???T’ T” Find the transmission parameters T of the work. ???????????????????2211IUTIU????????????????????????????2211IUTIU??????????????????????????????????????????11221121IUTIUTIUUU???????????????????????????????2222IUTIUTT ????TTT ?????例 易求出 ???????10Ω 411T???????1S 012T ???????10Ω 613T+ ? + ? 4? 6? 4? I1 I2 U1 U2 4? 4? 6? T1 T2 T3 ???????????????????????????2 .5S 0 .2 5Ω 162106101 1041][ ][ ][][321 TTTT則 注 (1) 串聯(lián)后端口條件可能被破壞。需檢查端口條件。 端口條件破壞 ! 2A 2A 1A 1A 2? 3A 3? 2? 1? 1? 1? 3A 2? 1? 2? 2? 2A 1A (2) 具有公共端的二端口 ， 將公共端串聯(lián)時(shí)將不會(huì)破壞端口條件 。 端口條件不會(huì)破壞 . Z? Z?? 回轉(zhuǎn)器： 2’ 1 1‘ 2 r 1 1‘ 2 2’ r ??????1221riuriu(a) ??????1221riuriu(b) Gyrator 阻抗逆變作用 r )(2 sI)(1 sU+ )(1 sI)(2 sU+ )(sZ L)(sZ i)(1)()(1)(1)()()()( 22222211sZrsIsUrsUrsrIsIsUsZLi ??????若 是電容 sCsZ L 1)( ?s L eCsrsCrsZ i ??? 22)(負(fù)阻抗變換器： )(1 sU )(2 sU)(1 sI )(2 sI+ + NIC ?????????????????????)()(001)()(2211sIsUksIsUNegative impedance converter 負(fù)阻抗變換作用： ? ? )(1)()()()()(2211 sZksIksUsIsUsZLi ??????若 ZL(s)=R, k=1 RsZ i ??)(1810 Summary and Revie
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