I am looking for a RF Detector, which would detect 30 to 50watts of RF Power, with a frequency range of 700MHz to 2.5GHz. can anyone please suggest me some detectors?
You will need to pad down that power level to around 10 mW before applying it to a typical integrated RF Detector. If you are using a directional coupler to sniff some of the power, then the coupling factor of the coupler (usually 10-20 dB) will give you a good start. As regards which detector to use, take a look at ADL5903 (www.analog.com/adl5903) or ADL5501 (www.analog.com/ADL5501). . They have 35 and 30 dB of detection range resppectively which is much more than what you need I think.
Thanks, that was really helpful. can I use a multi band antenna in RFIN with impedance matching circuit. And will get the true power in all bands.
Yes but remember that the RF detector is broadband and has no frequency selectivity. So if your antenna picks up a -10 dBm tone at 1 GHz and another -10dBm tone at 2 GHz, the detector will report a total power of -7 dBm.
can you suggest me some simulators where I can put together ADL5903, D coupler and other circuit to simulate and see the performance.
I think 5903 works best for me.
Unfortunately, we don't offer a behavioral model for this device. Some simulators have a "log amp" function that you could use to try to put together a model for the device. Easiest thing to do in my opinion is to purchase and eval board.
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