I would like to measure Vrms of high power pure sinus
power from 1 Vp-p up to 60 Vp-p frequency from 8-15 Mhz signal pure sinus
found this from analog device AD8363: 50 Hz to 6 GHz 50 dB TruPwr™ Detector http://www.analog.com/en/rfif-components/detectors/ad8363/products/product.html
it is dedicated for small device input AC output Vrms DC the output can be scale to 0-5 volts DC so hope it will be suitable for Arduino ADC
but don't know what to do with the high power input? any suggestion how to decrease power? other solutions?