微波技术-传输线和波导

1、)1A(0HkzHH0EkzEE2222t2222t zjeAzZ )().().().().(d53xHyEkjEc53yHxEkjEb53yHxEkjHa53xHyEkjHzz2cyzz2cxzz2cyzz2cx 00 zzHE0 ck0022 HEtt k)14. 3(02ttEcl dHI)16. 3( ttTEMHEZ)17. 3()17. 3(bHEZaHEZxyTEMyxTEM u TE TE波的特征波的特征l E Ez z=0=0，H Hz z00，即磁场有纵向分量，电场无纵，即磁场有纵向分量，电场无纵向分量，只有横向分量。向分量，只有横向分量。uHkhjEvHkhjEvHkh

2、jHuHkhjHzcuvzcvuzcvvzcuu 2222 xHkjEyHkjEyHkjHxHkjHzcyzcxzcyzcx 2222 )20. 3(022222 zcHkyx)22. 3( kHEHEZuvvuTE u TM TM波的特征波的特征l H Hz z=0=0，E Ez z00，即电场有纵向分量，磁场无纵，即电场有纵向分量，磁场无纵向分量，只有横向分量。向分量，只有横向分量。uEkhjHvEkhjHvEkhjEuEkhjEz2cuvz2cvuz2cvvz2cuu xEkjHyEkjHyEkjExEkjEzcyzcxzcyzcx 2222 )25. 3(022222 zcEkyx)2

3、6. 3(kHEHEZuvvuTE )14. 3(02 t ECCvCLIVZ 1000 dsEEVC*20 CsdlHHIRR*20 LCv11 022 zctHk 022 zctEk0 zE00 axxzxH00 byyzyHxHkjEyHkjEyHkjHxHkjHzcyzcxzcyzcx 2222 )78. 3(sincossincos),(ykDykCxkBxkAyxhyyxxz bnkamkDByx 00)81. 3(coscos),(zjmnzeybnxamAzyxH )82. 3(cossin)82. 3(sincos)82. 3(sincos)82. 3(cossin22222

4、222beybnxamAamkjxHkjEaeybnxamAbnkjyHkjEdeybnxamAbnkjyHkjHceybnxamAamkjxHkjHzjmnczcyzjmnczcxzjmnczcyzjmnczcx )101. 3(sincos)101. 3(cossin)101. 3(cossin)101. 3(sincos22222222deybnxamBamkjxEkjHceybnxamBbnkjyEkjHbeybnxamBbnkjyHkjEaeybnxamBamkjxEkjEzjmnczcyzjmnczcxzjmnczcyzjmnczcx )100. 3(sinsinzjmnzeybn

5、xamBE )104. 3(kHEHEZxyyxTM )86. 3( kHEHEZxyyxTM 2222 bnamkcc 212 cg )83. 3(22222 bnamkkkc 2cp1vv vvp 2cg1vv vvg 2gpvvv zj10yzj10 xzj10zexaAajEexaAajHexaAH sinsincos10c01c20c 01c20c10cffff 10y0 xzzx0 xsAaHaaJ 10y0 xzzx0 xsAaHaaJ xaAajaxaAaHaHaaJzxyxxzzyys sincos101000 xaAajaxaAaHaHaaJzxbyxxzzybys sin

6、cos1010 ztj10z2axseAajaJ ).(ReRe*9234bAadxdyaHE21P22103a0 xb0yz10 c2ssl933dlJ2RP).( ).(/tan293mNP2k2d b0ya0 x2sz2sxs2sysldxJJRdyJRP).(9532a2abARP232210sl ).(/963mNpkab2kbaRba2a2abR2P2P2323s3232s210lc zwvu11zhrhh)110. 3()110. 3()110. 3()110. 3(2222dEHkjEcEHkjHbHEkjEaHEkjEzzczzczzczzc 222 kkc 134. 30,

7、11112. 30,1122222222 zczcekhk0 azH 有有限限值值 0 zH)111. 3(022 zczHkHzjzzehH 0,11222222 zchk)()(),( PRhz 22222221 dPdPkddRRdRdRc znzHnH .2, 12)115. 3(0222 PkdPd )116. 3(0222222 PkkddRdRdc )117. 3(cossin kBkAP znzHnH .2, 12整整数数） nnk( )117. 3(cossin nBnAP 注意！注意！ P的解中正弦项和余弦项分别是圆波导中的单独解，它们的的解中正弦项和余弦项分别是圆波导中的

8、单独解，它们的存在与激励有关。存在与激励有关。 )120. 3()( cncnkDYkCJR )121. 3(sincoszjcnzennkAJH 0 azH )125. 3(apknmcnm )124. 3(0)( akJcn)127. 3(2)126. 3(2 apfapknmcnmnmnm zjcnczczjcnczczjcnczczjcnczcennkAJkjHkjEennkAJknjHkjEennkAJknjHkjHennkAJkjHkjH sincos)(cossin)(cossin)(sincos)(222222)129. 3( kHEHEZTE 圆波导圆波导TETE模的模的pp

9、nmnm值值 由于由于pp1111值最小，对应于最长的截止波长，因此值最小，对应于最长的截止波长，因此TETE1111模是圆波导的最低传播模式，即基模。模是圆波导的最低传播模式，即基模。 )130. 3(sincos1aekAJHzjcz )130. 3(sincos)()130. 3(cossin)()130. 3(cossin)()130. 3(sincos)(112121cekAJkjEbekAJkjEeekAJkjHdekAJkjHzjcczjcczjcczjcc )17.(12)()(222202222CpJpnpxdxxJxnxJnmnmnmnmpnnnm aaddHEHEddzH

10、EP020*020*0Re21Re21 )131. 3(142111420akJpkAPcc 202022222adHHRadJRPzsssl )132. 3(12212422akJakaRAPccsl )133. 3(/112211222112240mNPpkkakRpakakRPPcscslc 022 zczEkE0 azE 有限值有限值 0 zE znzEnE .2, 12 )135. 3(sincos nnkAJEcnz )138. 3(apknmc )139. 3(22 apknmnm 传播常数传播常数截止频率截止频率)140. 3(22 apkfnmccnm TM TM1111模与

11、模与TETE0101模有相同的模有相同的截止频率，即它们是简并截止频率，即它们是简并的的. . nnkAJkjHkjHnnkAJknjHkjHnnkAJknjEkjEnnkAJkjEkjEcnczccnczccnczccnczcsincos)(cossin)(cossin)(sincos)(222222 波阻抗波阻抗)142. 3(kHEHEZTM zjczekAJH0 zjccekJkjH 0 zjccekJkjE 0 zjcczjcczjczekAJkjHekAJkjEekAJE 000)143. 3(011222 0,0 bVa )145. 3(, PR )148. 3(1)147. 3

12、(2222 kdPdPkddRddRp )150. 3(sincos nBnAP 0 R 153. 3lnln0ztjeabbV DC ln ztjreabVE ln0 ztjrreabVEzEjH ln10 ldHl dHI 200 ztjeabVI ln200 ababIVZrrln60ln2000 0),(11222222 zchk00 bzazHH nnkDYkCJHcncnzcossin )158. 3(0)()158. 3(0)(bbkDYbkCJaakDYakCJcncncncn )159. 3(akYbkJbkYakJcncncncn 0),(11222222 zcek00 b

13、zazEE nnkDYkCJEcncnzcossin akYbkJbkYakJcncncncn bac 11 bacffrrc 11bakc 2)176. 3(rpcv )177. 3(000kvrrp )178. 3(10CvCLZp )179. 3(441. 0300abwbZer )179. 3(35. 035. 035. 002bbwbwbwbwbwe )180. 3(1206 . 085. 012000aZxZxbWrr )180. 3(441. 0300bZxr mNpZBbZRZAtbZRrosrrsc/12016. 0120301017. 200003 ttbtbtbtbWA2

14、ln121 tWWttWbB 4ln21414. 05 . 07 . 05 . 01 )182. 3(0 , 20,2byaxyxt )183. 3(0,)183. 3(0, 02byxayxbyax 2202,02,2,02,WxWybxybxobxbxs oddnnoddnnbybybanaxnBbyaynaxnAyx112sinhcos20sinhcos, .5 , 3, 1.5 , 3, 12coshcos20coshcosnnnnybybybanaxnAanbyaynaxnanAyE 2/,2/,byxDbyxDyys )187. 3(2coshcos2,.5,3, 10 nnrsabnaxnanA )188. 3(2021 WxWxxs 189. 32/cosh2sin202abnnaWnaArn 22191. 3)/(WWsmCWdxQ 20,.5 , 3, 1)190. 3(2sinh, 0bnnyabnAdyyxEV )192. 3(/2/cosh2/sinh2/sin2,.5 ,