問題詳情

4. The cutoff frequency of the mode of a rectangular waveguide (with dimensions a and b) is


m or n= 0, 1,2..., for

modes (but not both 0) and m or n = 1 , 2..., for

modes.
【題組】(Ⅰ) Please determine the lowest five modes for the following cases:(i) b/a=1 (5%);(i) b/a=1/2 (5%); (iii) b/a=1/3 (5%).

參考答案