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Foufou
Joined: 22 Oct 2006
Posts: 144
Helped: 1
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 03 Feb 2007 10:48 Gilbert Mixer help |
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Hi every body, I would like to ask a question about the gilbert mixer, I have red some articles about the design of the gilbert mixer in RF and the authors are always interested in the input matching (50 ohm) of this circuit and they don’t talk about the output matching , can any one explain me this point,
thinks
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hr_rezaee
Joined: 06 Oct 2004
Posts: 867
Helped: 88
Location: Iran-Mashhad
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| 03 Feb 2007 15:23 Gilbert Mixer help |
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Hi
as I know output matching is as important as input matching.
regards
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pkmisra
Joined: 25 Apr 2008
Posts: 2
Location: kanpur
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| 25 Apr 2008 14:07 Re: Gilbert Mixer help |
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hi,
Mixer output always goes to a LC filter(ideally non resistive), so output matching in most applications is not required. AS per maximum power transfer theorem, filter always tries to transfer all power from mixer output. The cases where other circuit is available after mixer output, there output matching will be required.
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