高频电子线路课后习题答案（第五版）张肃文(3)

?gVcos?t5?13解：i??m?0i??Incosn?tn?0?当cos?t?0当cos?t?01??1??gVcos?td?t?gVm2?????m1??1I1??gVmcos2?td??t??gVm???21?21???gVm2In??gVmcos?tcosn?td??t????n?1?????05?15解：i?iD1?iD2I0?n为偶数n为奇数

?gVcos?tiD1??m?024?当cos?t?0当cos?t?0?gVcos?tiD2??m?0当cos?t?0当cos?t?0k?1??1??k?1,2,3,??i?gVm?gVm?cos2k?0t2??k?1?2k??15?16解：当V0?1?msin?t?sin?0t?0时，i?0；当V0?1?msin?t?sin?0t?0时，i?gV0?1?msin?t?sin?0t

5?17解：v0?RL?iD1?iD2??RLk?v1?v2??k?v1?v2??4kRLv1v2

5?18解：v0?RL?i2?i3??RL?i4?i1??RL?i2?i4?i1?i3?22??cos2kω0tsinΩtcos2kω0t??i?gV0?1?msinΩt?2??2m??22?4k?14k?1k?1k?1???k?1,2,3,??

2????R?b?R?b?R?bLLL?RLb0?b1?v1?v2??b2?v1?v2??b3?v1?v2?2203??b1??v1?v2??b2??v1?v2??b3??v1?v2??b1?v1?v2??b2?v1?v2??b3?v1?v2?223300???

?b1??v1?v2??b2??v1?v2??b3??v1?v2?3??8RLb2v1v2?1?gm?5?23解：diC23?b1?2b2vBE?3b3vBE?4b4vBEdvBEdiCdvBE?b1?2b2V0mcos?0t?3b3V02mcos2?0t?4b4V03mcos3?0tvBE?v0gm?t???b1?2b2V0mcos?0t?gm1?2b2V0m?3b4V03m3b3V02m?1?cos2?0??2b4V03mcos?0t?b4V03m?cos?0t?cos3?0t?21gm1?b2V0m?1.5b4V03m2qvBEdiCaISq?2?gm??vBE?ekTdvBEkTgc?digm?t??CdvBEVomcos?0taIq?SVomcos?0t?ekTkTqvBE?v023??aISqq1?q1?q???Vomcos?0t?1?Vomcos?0t??Vomcos?0t???Vomcos?0t????kT2?kT6?kT???kT???qV?I?qV??I?qV??qV???ISomcos?0t??IS?om?cos2?0t?S?om?cos3?0t?S?om?cos4?0tkT2?kT?6?kT??kT?gm1qV3?IS?qVom???ISom???kT8?kT?3234?IqV3?IS1gc?gm1?Som?22kT165?25解：i??i1?i3?i2?i4?qVom????kT?23?a0?a1?v0?vs??a2?v0?vs??a3?v0?vs??a4?v0?vs???34?a0?a1?v0?vs??a2?v0?vs??a3?v0?vs??a4?v0?vs???234?a0?a1??v0?vs??a2??v0?vs??a3??v0?vs??a4??v0?vs???234?a0?a1??v0?vs??a2??v0?vs??a3??v0?vs??a4??v0?vs???2343?8a2v0vs?16a4v0vs?16a4vs3v0??

5?29解：gc?0.5IE262?gic?gb?e??sIE?1???r??26bb????T?I0.5?E??0.55?mS?26?026?350.5IE0.5?0.5??9.6?mS?2626goc?gce?4??S?2gc9.62Apcmax???10473??40dB?4gicgoc4?0.55?0.004???QL?2fi?2?465??????1228??30.1dB??Apc?Apcmax?1??A1??10473?1?pcmax??Q????Q2?f100?100?00.7?????IE260.5IE0.5?0.085?30解：gc?0.5???1.54?mS?22626??sIE?1?????26rbb????T?gic?gb?e?IE0.08??0.1?mS?26?026?30222goc?gce?10??S?2gc1.542Apcmax???592.9??28dB?4gicgoc4?0.1?0.01?gc?GL?1.54?0.1Apc???g?G???g??0.01?0.1??0.1?196??23dB???L?ic?oc …… 此处隐藏：8字，全部文档内容请下载后查看。喜欢就下载吧 ……