RF low power detector / low-cost

[jabidof]

qx5hayward

Hi everyone,
I need to develop a "low-cost" (<50$) "low-power" (-50dBm to 0dBm) detector working between 10MHz to 20MHz.

Any idea on this subject?

Regards

 

[Soben]

low power rf diode detector

A Diode power detector where u use the Square law characteristics of the diode will do for you, Problem is it measures up to -20 or -15 dBm , but if u use some 20dbm attenuators infront of your Detector u can extend it to 0 dbm that u require.

 

[rfmw]

I'd use one of the Maxim's Tru-power detector devices. Simple and accurate, and already covers your dynamic range...

 

[jabidof]

I have trouble finding the datasheet of the tru-power detector from maxim. Could you help?

Thks

 

[Borber]

You can use Analog Devices AD8307. There is a lot of projects with this chip on the web.

 

[jabidof]

Thanks for the info. Maybe you already know some "good" links?

 

[vfone]

**broken link removed**
http://www.arrl.org/qex/2005/QX5Hayward.pdf