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常用的一些公式、特征参数等

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常用参数等Radio-Frequency and Microwave Communication Circuits: Analysis and Design Devendra K. Misra Copyright # 2001 John Wiley & Sons, Inc. ISBNs: 0-471-41253-8 (Hardback); 0-471-22435-9 (Electronic)

APPENDIX 2 CHARACTERISTICS OF SELECTED TRANSMISSION LINES

COAXIAL LINE Consider a coaxial line with its inner and outer conductor radii a and b, respectively, as illustrated in Figure A2.1. Further, er is the dielectric constant of insulating material. The line parameters L, R, C, and G of this coaxial line are found as follows: C and, L 200 lnb=a nH=m A2:2 55:63er lnb=a pF=m A2:1

If the coaxial line has small losses due to imperfect conductor and insulator, its resistance and conductance parameters can be calculated as follows: 1 1 R % 10 a b and, G 0:3495er fGHz tand lnb=a S=m A2:4
553



r fG……
标签:常用参数
常用的一些公式、特征参数等
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