EEVblog Electronics Community Forum

Electronics => RF, Microwave, Ham Radio => Topic started by: CopperCone on July 09, 2018, 04:21:25 am

Title: high power mixer?
Post by: CopperCone on July 09, 2018, 04:21:25 am

Can you mix high power signals? Like if you had two high power signals you want to efficiently mix without amplification afterwords.

Title: Re: high power mixer?
Post by: helius on July 09, 2018, 05:16:08 am

It is possible for microwaves.
https://en.wikipedia.org/wiki/Magic_tee
https://en.wikipedia.org/wiki/Wilkinson_power_divider

Title: Re: high power mixer?
Post by: T3sl4co1l on July 09, 2018, 07:34:42 am

Nonlinear mix, not linear superposition (audio mixing).

Here's an example at power: http://davidberning.com/technology (http://davidberning.com/technology)

Only used as a DC transformer, but that's one possible application of a mixer: synchronous modulating and demodulating at a driven clock frequency.

I don't know of any general method for high frequencies.  At low frequencies, it's just ordinary power electronics.

Tim

Title: Re: high power mixer?
Post by: Wolfgang on August 08, 2018, 12:02:13 am

Do you want a "transmit" mixer ?

What frequency range should it have ?
What are the power levels ?
Is efficiency an issue ?