Re: Calibrating an RF detector
Just a few experiences with the AD8310 which is the low frequency (440MHz) version of this range of devices.toggle quoted messageShow quoted text
Linearity was good but there was quire a large variation of output voltage with frequency so we havr ro calibrate at each frequency of interest. The 50MHz calibrators are usually used for thermal power meters.
The filter capacitor CLPF should not be omitted as rectified RF can otherwise appear on the output.
We encountered problems with the regulation of the supple and ended up using one of the A/D inputs of the Arduino processor to compensate for variations.
Examination of Fig 15 on the AD8317 data sheet will show the variation of input impedance with frequency.
It will pay to read the data sheet carefully to see how well it will suit your application.
On 27/08/2017 08:17, willis.mj@... [ukmicrowaves] wrote: