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Tunable Bandpass filter for the AD8362 input


I would like to use the AD8362 to measure the rms RF level at a specific frequency, even better would be to has this frequency adjustable

Can anyone suggest a way or supporting components, for example, to limit the rf input to the chip to say 905-915 MHz? or maybe there is a better suited IC for this purpose?

I need to detect for the presence of various signals at specific frequencies at a short distance, GSM transmitting on both 900 and 1800, wifi, and some others, but i want to exclude things like DECT and radios from being measured

I would be happy to switch in different filters if need be

Any ideas or ref designs very much appreciated

I have the AD8362 working fine, everything is looking good, now im down to filtering its input somehow

Many thanks


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