- 对比*空间均匀平面波的波阻抗定义，定义波导的波阻抗为
Z = 横 向 电 场 横 向 磁 场 = E t H t Z=\frac{横向电场}{横向磁场}=\frac{E_t}{H_t} Z=横向磁场横向电场=HtEt
- E t , H t E_t,H_t Et,Ht 与传播方向之间满足右手定则
Z
T
E
=
η
1
−
(
λ
λ
c
)
2
Z_{TE}=\frac{\eta}{\sqrt{1-(\frac{\lambda}{\lambda_c})^2}}
ZTE=1−(λcλ)2
η
Z
T
M
=
η
1
−
(
λ
λ
c
)
2
Z_{TM}={\eta}{\sqrt{1-(\frac{\lambda}{\lambda_c})^2}}
ZTM=η1−(λcλ)2
Z
T
E
M
=
L
1
C
1
Z_{TEM}=\sqrt{\frac{L_1}{C_1}}
ZTEM=C1L1
- 理想媒质中均匀平面波的波阻抗为
Z T E M = η = μ ε = 120 π ε r Z_{TEM}=\eta=\sqrt{\frac{\mu}{\varepsilon}}=\frac{120\pi}{\sqrt{\varepsilon_r}} ZTEM=η=εμ =εr 120π