[問題] 把電壓波形做傅立葉轉換後
大家好,
這是我的電壓波形
http://ppt.cc/KREq
橫軸單位為us,縱軸單位為uv
週期T=2us
所以頻率為0.5MHZ
我把它做傅立葉轉換後
http://ppt.cc/euT!
出現了這樣的圖形
橫軸單位為MHZ,縱軸單位為nv
是說原本的電壓波形
是由做傅立葉轉換後0.5MHZ之前的各頻率分量所組合而成的
0.5MHZ之後是屬於雜訊的部分
這樣解釋對嗎?
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 140.115.41.159
推
04/10 15:23, , 1F
04/10 15:23, 1F
→
04/10 15:33, , 2F
04/10 15:33, 2F
→
04/10 18:23, , 3F
04/10 18:23, 3F
推
04/10 18:36, , 4F
04/10 18:36, 4F
→
04/10 19:19, , 5F
04/10 19:19, 5F
→
04/10 19:20, , 6F
04/10 19:20, 6F
推
04/11 00:12, , 7F
04/11 00:12, 7F
→
04/11 12:59, , 8F
04/11 12:59, 8F
→
04/12 20:53, , 9F
04/12 20:53, 9F
→
04/12 21:00, , 10F
04/12 21:00, 10F
→
04/12 21:01, , 11F
04/12 21:01, 11F
→
04/12 21:02, , 12F
04/12 21:02, 12F
→
04/12 21:03, , 13F
04/12 21:03, 13F
→
04/12 21:06, , 14F
04/12 21:06, 14F
推
04/17 19:52, , 15F
04/17 19:52, 15F
→
08/13 19:25, , 16F
08/13 19:25, 16F
→
09/17 23:18, , 17F
09/17 23:18, 17F