高频电子线路习题答案（第五版）张肃文

1、高频电子线路习题答案（第五版）张肃文 看不惯那些家伙。 高频电子第五版 3?1解：f0?1mhz2f0.7?1?106?990?103?10(khz)f01?106q?1002f0.710?103取r?10则l?c?qr?01?100?10?159(?h)2?3.14?1061?159(pf)?02l(2?3.14?106)2?159?10?6 113?2解：(1)当?01?或?时，产生并联谐振。02l1c1l2c2?(2)当?01?(3)当?01?1或02?l1c11或02?l1c11时，产生串联谐振。l2c21时，产生并联谐振。l2c2 1l1)r2?j0lr(1?2)r2?lj0cc0l

2、cc?r3?3证明：z?112rr?j0l?r?2r?j0l(1?2)j0c0lc 223?4解：1?由?15?c?1605?450?c?535得c?40pf(r?j0l)(r?由?12?c?16052?100?c?5352得c?-1pf?不合理舍去?故采用后一个。2?l?3? l c c 11?180?h?02?c?c?2?3.14?535?103?2?450?40?10?12 3?5解：q0?11?2126-12?0c0r2?3.14?1.5?10?100?10?5l0?11?112?h?226-12?0c0?2?3.14?1.5?10?100?10vom1?10-3iom?0.2?ma?

3、r5vlom?vcom?q0vsm?212?1?10-3?212?mv?113?6解：l?2?253?h?0c2?3.14?1062?100?10?12 ?q0?vc10?100vs0.1c?cx11?2?100?pf?cx?200pfc?cx?0l?2?3.14?106?2?253?10?62?3.14?106?253?10?62?3.14?106?253?10?6rx?47.7?qq02.50.1100?0l?0l11?47.7?j?47.7?j796?6?12?0cx2?3.14?10?200?10113?7解：l?2?20.2?h?0c?2?3.14?5?106?50?10?12zx?

4、rx?jf05?106100q0?2f0.7150?10332f1002?5.5?5?10620?q0?6f035?103?2?2?f0.7，则q?因2f0.7，所以应并上21k电阻。 0?0.5q0，故r?0.5r2f0cc3?8证明：4f0.7c?0?g?f02f0.7q ?c?c0?c1?5?20?20?20?18.3?pf?3?9解：c?ci?2c2?c0?c120?20?20f0?11?41.6?mhz?6?122lc2?3.140.8?10?18.3?10l?100?c120.8?10?6?20.9?k?20?20?10?1222rp?q0?c2?c0?c1?20?20?20?r?

5、rirp?r?1020.9?5?5.88?k?0c20?1?r?5.88?103ql?28.26?60l2?3.14?41.6?10?0.8?102f0.7f041.6?106?1.48?mhz?ql28.2 3?12解：1?zf1?02?zf1?03?zf1?r 3?13解：1?l1?l2?c1?c2?1103?159?h?62?3.14?10?0111?159?pf?226?6?01l1?2?3.14?10?159?10r1?20m?1?3.18?h?6?012?3.14?102?zf1?01m?2?r2?2?3.14?10?6?3.18?10?6?20?202l1159?10?6zp?2

6、5?k?12?r1?rf1?c1?20?20?159?103?q1?01l1r1?rf12?3.14?106?159?10?6?2520?204?2f0.7?5?c2f0f0106?20?2?2?2?28.2?khz?q1r110312?02l2?1?2?3.14?950?10?32?159?10?6?177?pf?1?z22?r2?j?l?021?c?022?1?20?j?2?3.14?106?159?10?6?20?j1006?12?2?3.14?10?177?10?zf1?01m?2?z22?2?3.14?10?6?3.18?10?6?0.768?j3.84?20?j10062 3?15

7、解：?r?l159?10?20?r1rpc50?103?159?10?12?rf1?0?m?0f0106q?2?2?1002?f0.714?103 3?16解：1?rf1?01m?2?r2?10?7?10?6?20?52rab?2?3?q?rr1?01l?21?rf1?10?7?100?10?6?40?k?5?202?01m?01lr1107?10?6?25107?100?10?6?20052?f0.711?2?2?1?22?2?2?1?0.013f0q200 i1113?17解：?q?22.522i01.25?2?f?10?103?1?1?q?300?103?q?f?0?11r?11.8q?

8、0c22.5?2?3.14?300?103?2000?10?12?2?f?10?103?1?1?q300?103?qf?0?q?q?30?22.5?7.51?2?串联联谐?l1?375hl2c?3?18解：?1?l2?125?并联联谐?l1?l2?c? i?i012?12?1?q?302 4?5解：当f?1mhz时，?0?0f1?f?t0?0f1?f?t0?0f1?f?t?2?50?50?106?1?250?106?502?49当f?20mhz时，?2?当f?50mhz时，?2?50?20?101?250?106?506?2?12.1?50?50?106?1?250?106?2?5 4?7解：

9、gb?e?gm?cb?eie1?0.754?ms?26?0?1?26?50?1?0?50?0.754?10?3?37.7?ms?rb?egm37.7?10?3?24?pf?62ft2?3.14?250?10a?1?rbb?gb?e?1?70?0.754?10?3?1b?cb?erbb?2?3.14?107?24?10?12?70?0.1yie?gb?e?j?cb?e?a?jb?0.754?10?3?a2?b2?0.895?j1.41?ms?j2?3.14?107?24?10?12?1?j0.1?12?0.12j2?3.14?107?3?10?12?1?j0.1?yre?0.0187?j0.187?ms?2222a?b1?0.1gm?a?jb?37.7?10?3?1?j0.1?yfe?37.327?j3.733?ms?a2?b212?0.12?g?j?cb?c?a?jb?j?c?1?rga?jb?yoe?gce?j?cb?c?rbb?gmb?c?b?c?bb?ma2?b2a2?b2?1?j0.1?j2?3.14?107?3?10?12?1?70?37.7?10?3?2?0.049?j0.68?ms?2?1?0.1?av?4?8解：令?a?vo?av?令?a?vo?mm?g?