Jun 8, 2017 #1 G GulraizAhmed Newbie level 4 Joined Jun 6, 2017 Messages 5 Helped 0 Reputation 0 Reaction score 0 Trophy points 1 Activity points 39 Hello, i have measured S21 parameter on network analyser and i need to right dow its characteristics and made a comparison with another s 21 graph . Kindly let me know what one must right whe explaining S21 graph. i am uploading graphs here. 1st graph 2nd graph
Hello, i have measured S21 parameter on network analyser and i need to right dow its characteristics and made a comparison with another s 21 graph . Kindly let me know what one must right whe explaining S21 graph. i am uploading graphs here. 1st graph 2nd graph
Jun 8, 2017 #2 pancho_hideboo Advanced Member level 5 Joined Oct 21, 2006 Messages 2,847 Helped 767 Reputation 1,536 Reaction score 733 Trophy points 1,393 Location Real Homeless Activity points 17,490 GulraizAhmed said: Kindly let me know what one must right whe explaining S21 graph. Click to expand... Who can know your DUT ? If you want to be helped, you have to learn how to describe technical documents.
GulraizAhmed said: Kindly let me know what one must right whe explaining S21 graph. Click to expand... Who can know your DUT ? If you want to be helped, you have to learn how to describe technical documents.
Jun 8, 2017 #3 G GulraizAhmed Newbie level 4 Joined Jun 6, 2017 Messages 5 Helped 0 Reputation 0 Reaction score 0 Trophy points 1 Activity points 39 Sorry i am new here. My Device under test is a Passive filter enclosed in a box. I am measuring in between 300MHz and 200 GHz.
Sorry i am new here. My Device under test is a Passive filter enclosed in a box. I am measuring in between 300MHz and 200 GHz.
Jun 8, 2017 #4 pancho_hideboo Advanced Member level 5 Joined Oct 21, 2006 Messages 2,847 Helped 767 Reputation 1,536 Reaction score 733 Trophy points 1,393 Location Real Homeless Activity points 17,490 GulraizAhmed said: My Device under test is a Passive filter enclosed in a box. Click to expand... Who can know what filter you use ? Again surely learn how to describe situations.
GulraizAhmed said: My Device under test is a Passive filter enclosed in a box. Click to expand... Who can know what filter you use ? Again surely learn how to describe situations.
Jun 8, 2017 #5 C CataM Advanced Member level 4 Joined Dec 23, 2015 Messages 1,275 Helped 314 Reputation 628 Reaction score 312 Trophy points 83 Location Madrid, Spain Activity points 8,409 GulraizAhmed said: I am measuring in between 300MHz and 200 GHz. Click to expand... Your 1st plot from post#1 shows frequency from 300 kHz to 200 MHz.
GulraizAhmed said: I am measuring in between 300MHz and 200 GHz. Click to expand... Your 1st plot from post#1 shows frequency from 300 kHz to 200 MHz.
Jun 8, 2017 #6 FvM Super Moderator Staff member Joined Jan 22, 2008 Messages 52,422 Helped 14,749 Reputation 29,780 Reaction score 14,101 Trophy points 1,393 Location Bochum, Germany Activity points 298,107 I agree with pancho_hidebo. Both S21 magnitude curves show an attenuation of > 35 dB for most frequencies. We really can't know if this an intended behavior (e.g. a filter no suppress any RF on a low frequency or DC line) or failure. I am measuring in between 300MHz and 200 GHz. Click to expand... According to the first diagram factor 1000 lower frequency.
I agree with pancho_hidebo. Both S21 magnitude curves show an attenuation of > 35 dB for most frequencies. We really can't know if this an intended behavior (e.g. a filter no suppress any RF on a low frequency or DC line) or failure. I am measuring in between 300MHz and 200 GHz. Click to expand... According to the first diagram factor 1000 lower frequency.