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jupitorcuu
Joined: 24 Apr 2003
Posts: 84
Location: chinaBJ
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 20 May 2003 6:40 Can not find RF signal substractor symble in ADS2002 |
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When I want to draw a feedback system diagram in ADS2002,
I canot find a component like substractor.
I want to one signal substract the other signal,and then output
Because it is a function like reverse-coupler(it copy from one main signal),but not a coupler.
What is it in RF?
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Gemini1706
Joined: 03 Jul 2002
Posts: 84
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| 23 May 2003 4:55 |
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you need to do it in simulation just like you do it in the real world: inverse the signal (180 degree shift in phase) then add the two signals together using a 3-dB coupler.
To acheive the 180 degree you can create an s-parameter block that does not change amplitude, but changes phases by 180 degree.
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jupitorcuu
Joined: 24 Apr 2003
Posts: 84
Location: chinaBJ
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| 25 May 2003 8:08 |
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Thank you
/ Warning #1 - No thanks at Elektroda! Read forum rules before posting! /
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mwpro
Joined: 20 Apr 2001
Posts: 83
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| 25 May 2003 11:39 |
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| alternatives you can use symbolic defined devices.
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