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[請益] 關於HFSS模擬SDD21 數值大於0

[ comm_and_RF ]12 留言, 推噓總分: +4

作者: m14036353 - 發表於 2021/06/22 15:20(2年前)

5^F推profyang: 頻率收斂條件設嚴一點或者你用discrete111.243.33.58 06/24 14:34

6^F→profyang: 直接解解看2.52GHz確認看看111.243.33.58 06/24 14:34

[問題] Hspice使用S參數跑時域模擬

[ comm_and_RF ]24 留言, 推噓總分: +11

作者: changebob - 發表於 2020/12/10 01:25(3年前)

7^F推profyang: 講個幹話: ADS比較不容易發散XDDD114.32.221.23 12/12 21:53

12^F推profyang: 因為原PO既然問Hspice應該是ads沒得用114.37.141.44 12/13 20:42

13^F→profyang: 所以才說是幹話114.37.141.44 12/13 20:42

[問題] 請教求傳輸線互感

[ comm_and_RF ]5 留言, 推噓總分: +3

作者: shappyee - 發表於 2020/06/21 05:57(3年前)

5^F推profyang: Q2D114.37.160.171 07/12 16:14

[問題] S parameter 定義請教

[ comm_and_RF ]37 留言, 推噓總分: +8

作者: tkufc - 發表於 2020/04/06 07:01(4年前)

11^F推profyang: V+=(V+Z0*I)/2, V-=(V-Z0*I)/2 就這樣114.37.170.136 04/08 08:56

12^F→profyang: power wave定義多除個sqrt(real(Z0))114.37.170.136 04/08 08:57

13^F→profyang: 你看不懂入射波反射波直接用上面定義就114.37.170.136 04/08 08:58

14^F→profyang: 好了114.37.170.136 04/08 08:58

15^F→profyang: 因為講電壓波什麼的對電波組以外的覺得114.37.170.136 04/08 08:58

16^F→profyang: 很難理解但電壓電流總懂了吧?114.37.170.136 04/08 08:59

[問題]高頻訊號應該跟傳輸速度無直接關係吧？

[ comm_and_RF ]27 留言, 推噓總分: +7

作者: howshue - 發表於 2019/09/28 08:40(4年前)

21^F推profyang: PCIE之類的就是bit rate越大傳越快114.37.180.38 09/29 22:48

22^F→profyang: 但無線就是你說的對114.37.180.38 09/29 22:48

[問題] RF訊號的crosstalk

[ comm_and_RF ]9 留言, 推噓總分: +3

作者: keven92110 - 發表於 2019/08/22 21:57(4年前)

3^F推profyang: FEXT是KC-KL114.37.181.142 08/23 23:04

4^F推profyang: 是說,知道時域了你可以自己轉頻域...114.37.178.188 08/28 21:58

5^F→profyang: NEXT就是那個值只是他是一個pulse 寬度114.37.178.188 08/28 21:58

6^F→profyang: 是2*TD, TD就是傳輸線的time delay114.37.178.188 08/28 21:59

7^F→profyang: FEXT也差不多只是他寬度還跟tr有關114.37.178.188 08/28 21:59

8^F→profyang: 這都很簡單的波形轉一下頻域除以1/s就114.37.178.188 08/28 22:00

9^F→profyang: 可以了114.37.178.188 08/28 22:00

[問題] PCIe走線對地電容解Jitter問題

[ comm_and_RF ]4 留言, 推噓總分: +3

作者: japanner - 發表於 2019/07/13 15:52(4年前)

3^F推profyang: 電容可以解應該是DDJ吧感覺你可能本來114.37.130.15 07/21 20:57

4^F→profyang: 走線阻抗偏高114.37.130.15 07/21 20:57

HFSS 電磁波設置問題

[ comm_and_RF ]10 留言, 推噓總分: +3

作者: zac06 - 發表於 2019/03/23 15:31(5年前)

1^F推profyang: 不是有互易定理嗎? 發射跟接收pattern一118.166.216.144 03/23 22:48

2^F→profyang: 樣吧天線不是都這樣搞的?118.166.216.144 03/23 22:49

[問題] 天線 S 矩陣問題

[ comm_and_RF ]4 留言, 推噓總分: +1

作者: j0958322080 - 發表於 2019/01/17 17:22(5年前)

2^F推profyang: 就我看圖示的簡單理解 a是外面有其他天118.166.216.101 01/18 20:52

3^F→profyang: 線之類輻射過來的東西 b是你輻射出去的118.166.216.101 01/18 20:52

[問題] FFT補零的方法

[ comm_and_RF ]39 留言, 推噓總分: +8

作者: j0958322080 - 發表於 2019/01/11 08:42(5年前)

2^F推profyang: Matlab的fft，不補到2的次方也可以算你114.137.114.214 01/12 12:23

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