通信电子线路-(谢沅清-邓钢-著)-电子工业出版社-课后答案-1.pdf

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¤Mûk 75 Ω Êôg“ íÚJ'0 50 ΩXôg“Sü yÞ 50 Ω óQ
Ê ¡ØÏD Ôôg“XSz 30 cm Mûk 50 Ω µËd¹0e[ 500 MHz œÃy
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· ´3ë óùԉãb ¶S œÃÁÃX´3ë“ ’Sz l y
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11
üSz 30 cm Xôg“œÃ ¹ l + 30 = λ íôg“g9J(ä
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e[ 500 MHz XµË J¶Sλ
×103 10
λ = = 60 cm
×10500 6
λ
Sz 30 cm Xôg“ Íe[ 500 MHz XµË b ¾ÝœÃÔى g9Ã!
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Ì'bJ(ä lãáÃÑr„
¹µËe[!Ç 100 MHz 8ʹ0¶S
×103 10
λ = = 300 cm
×10100 6
λ
= 75 cm
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´3ë óhb l = 75−30 = 45 cm XœÃÁÓ ’ ó£ L íhÝ