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Design >> RF Design >> wideband mixer design
https://designers-guide.org/forum/YaBB.pl?num=1133315761

Message started by coffeecat on Nov 29^th, 2005, 5:56pm

Title: wideband mixer design
Post by coffeecat on Nov 29^th, 2005, 5:56pm

hi,
i am working on a wideband mixer for uwb application. i found it very hard to maintain the gain/attenuation flatness over the frequency bands (3G~6G) with a simple RLC load. (Decreasing R can de-Q the gain but loses the gain). I tried switching between different RLC loads but the switches add alot of parasitics to the mixer. Any suggestions? Thanks!
coffeecat :)

Title: Re: wideband mixer design
Post by coffeecat on Nov 30^th, 2005, 4:58pm

someone suggested broadband matching to me.. may be i will try that. :)

Title: Re: wideband mixer design
Post by coffeecat on Dec 6^th, 2005, 5:01pm

i tried double-tuned load. still the bandwidth is around ~2GHz with less than 2dB of flatness... keep looking.. ::)

Title: Re: wideband mixer design
Post by coffeecat on Dec 15^th, 2005, 3:07pm

is it possible to plot the conversion gain of a mixer with respect to a range of LO frequencies for a single tone input signal?? ???

Title: Re: wideband mixer design
Post by coffeecat on Dec 22^nd, 2005, 4:19pm

i got the answers for my own questions. thanks, but no thanks. happy holidays. ;D