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[SOLVED] Mixer large bandwidth or RF Switch ?

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votientu

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Hello,

I am looking for a discrete device for this function.

I would call it a mixer with large bandwidth DC-9 GHz but it does not exist.
I think about a RF switch, but it is complicate to inverse the input signal.
In a paper I read, it is called Code modulating LNA, where the Vdd can be positive or negative.

Do you have any ideal about this device, I am looking for it for my project.

Thanks !
CM LNA.pngCM LNA.png
 

A balanced diode mixer is the usual solution to modulate a RF input signal with +/- 1. Or a balanced active modulator.

"Modulating LNA" sounds counter-intuitive, because an amplifier is expected to have a defined gain sign, either positive or negative which doesn't depend on the power supply.
 

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