[TriEmbed] Power output measurement

[John Wettroth]

Rodney,
I have a Spectrum Analyzer that goes up to 4 Ghz that can give you a pretty good not super precise idea if you can’t find something better.
 
What you really want is an RF Power Meter- these use a calorimetric approach and give you RMS power no matter your waveform.  I don’t have one.
 
My spectrum analyzer gives good results for CW but will read only peak on any modulated waveform- BT is OFDM I believe.  We could fake it by looking at its readings vs. a “good” BT waveform.
 
Regards,
John M. Wettroth
E: jwet at mindspring.com
M: (919) 349-9875 
H:  (984) 329-5420
 
From: TriEmbed <triembed-bounces at triembed.org> On Behalf Of Rodney Radford via TriEmbed
Sent: Wednesday, March 23, 2022 10:46 AM
To: TriEmbed Discussion <triembed at triembed.org>
Subject: [TriEmbed] Power output measurement
 
Does anyone here have a way to measure total radiated power out of a device in the Blueetooth spectrum?

I have a device (for work) that is supposed to be putting out 20 dBm and I would like to confirm how close we can get to that. I have a small SMA output from the board and need a power meter that can measure the total radiated power across the Bluetooth frequencies (frequency hopping is enabled).
 
This would be as a special favor to me as I do not have the authority to make a payment on behalf of my company, but if this test is successful, I do think it could generate opportunities in the future.
 
I would also need to get this approved by work before I can show up with a device, but before approaching them, I wanted to see if there is anyone that can run this test for us. 
 
Thanx,
Rodney
 
 
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