Consider a TM(n) mode of propagation along the z
direction in the space between parallel conducting
planes
(a) Show that as the frequency ω approaches the
cutoff frequency the wavelength for that mode
approaches ∞.
(b) Show that the averaged Pointing vector ? =
?u?vg ?z, where ?u? is the average energy density
of EM fields.
希望盡量有詳細的計算過程，感謝!!
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 114.46.16.90