Help me understand a peak detector diagram

[zhaozenghui]

I`m current doing research on the AGC .But the picture of this I can`t understand .Can you say something about it .
And how can I control S1,S2,when on and when off!
Vn ,Vp need inductor to get from Vin+,Vin- ??

 

[jecyhale]

Re: peak detector ,help

Can you tell us the frequency?

I have designed one which works with the frequency lower than 10MHz.


Added after 1 minutes:

I`m current doing research on the AGC .But the picture of this I can`t understand .Can you say something about it .
And how can I control S1,S2,when on and when off!
Vn ,Vp need inductor to get from Vin+,Vin- ??

It seems that A and B are inverters, isn't it?

This PD is too complex, why not use a simple one?

 

[zhaozenghui]

Re: peak detector ,help

I don`t have another circuit!! it`s work at 46MHz

Can you provide some for me ,Thanks!!

Added after 3 minutes:

Ａｎｄ　Ｉ　ｔｈｉｎｋ　Ａ　ｂｅ　ｉｎｖｅｒｔｅｒ　ｔｏ　Ｂ
Ｉｔ｀ｓ？？

 

[alvays]

peak detector ,help

Is this one working as a rectifier?
In postive half of period, the current flows along the left side, but in negative half, current flows along the right side.

 

[n1cm0c]

Re: peak detector ,help

Do you have a published reference for this circuit ?
I don't see clearly why it has two stages of LPF.