Zak28
Advanced Member level 2
Im looking for a simple yet rather accurate circuit to measure ambient rf power. This circuit should be 100Mhz - 6Ghz. IIRC a precision rf diode fed with just around of potential to overcome its particular semi conducting voltage threshold will output on the order of microwatts if coupled to a wideband arial. Im likely going to build a mini equiangular spiral antenna just because its ideal for such a wide band meter. MY MAIN CONCERN is NOT the arial or the output circuitry (which can be made really fancy with displays and such) rather its the actual acquisition mechanism itself. Perhaps the diode method is faulty and this is why I would like input to a legitimate rf power acquisition method for this wide band meter. All I need is a potential or current to relate to some rf power at some frequency preferably frequency to power stays linear. Please keep any digital circuitry out of your recommendations. Im sure this can be achieved with analog only components.