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References about frequency doubler design

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liberal

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Who can upload some articles about Frequency Doubler ,or some advice for designing a Doubler?
10MHz-------20MHz.
 

Re: Frequency Doubler

Try phase-locked frequency multipliers..
Example: NE564
**broken link removed**
regards,
IanP
 

Re: Frequency Doubler

Hi liberal

Try this approach: Feed your 10MHz signal to a 4-diode rectifier. The output signal will have twice the frequency than the input (and also higher frequencies). The output signal has to be bandpassfiltered and amplified.

Bye
 

Re: Frequency Doubler

Hi liberal

Try this approach: Feed your 10MHz signal to a 4-diode rectifier. The output signal will have twice the frequency than the input (and also higher frequencies). The output signal has to be bandpassfiltered and amplified.

Bye
Click to expand...
I can understand it.Isn't the output of rectifier dc?
 

Re: Frequency Doubler

I think no bandpassfilter has any problems witch capacitive coupling, meaning dont bother yourself with the possible DC components.
 

Re: Frequency Doubler

Bye[/quote]
I can understand it.Isn't the output of rectifier dc?[/quote]

Answer that yourself. Draw the voltage vs time out of an unfiltered full wave rectifier on a sheet of paper. Is it DC, AC, or both?
 

Frequency Doubler

Hi,

any nonlinear circuit (e.g. a class-C amplifier stage) with a resonant circuit tuned at the desired harmonic will work: the nonlinearity generates harmonics and the tuned circuit selects the one desired. It is possible to optimize the circuit (the working point of the class C ampifier) in order to optimize the efficiency for the desired harmonic.
A particular circuit very efficient for a doubler (or other even-order multiplication) is the push-push configuration. It doesn't generate odd-order harmonics, so it is very easy to filter the double frequency component. Look for "push-push"
Regards

Z
 

Frequency Doubler

Hi,

You can use upconversion mixer as frequency doubler. The input is two same frequency signal.
One is small signal and the another is large signal.

You can search Gilbert Mixer paper or study Razavi RF textbook.
 

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