The Designer's Guide Community Forum

The Designer's Guide Community Forum
https://designers-guide.org/forum/YaBB.pl
Design >> RF Design >> Can I use a Directional Detector as an ASK-Demodulator?
https://designers-guide.org/forum/YaBB.pl?num=1362407186

Message started by Dr. von Rosenstein on Mar 4^th, 2013, 6:26am

Title: Can I use a Directional Detector as an ASK-Demodulator?
Post by Dr. von Rosenstein on Mar 4^th, 2013, 6:26am

first: sorry for my bad english!

hi,
i need an ASK-demodulator. carrier frequency: 24 GHz. data frequency: some kHz. i wonder if a directional detector (for example http://www.avagotech.com/pages/en/rf_microwave/amplifiers/detectors/vmmk-3313/) can assume this function. responds such a device quickly enough?

thank you for all answers!

Title: Re: Can I use a Directional Detector as an ASK-Demodulator?
Post by rfcooltools.com on Mar 10^th, 2013, 6:18pm

Dr.

It depends on the bandwidth of the detector and the C/N you need. Contact the manufacturer to get the bandwidth of the power detector. it might be as simple as adjusting the output rc filter components to get the response you need.

http://rfcooltools.com

Title: Re: Can I use a Directional Detector as an ASK-Demodulator?
Post by Dr. von Rosenstein on Mar 11^th, 2013, 1:13am

in the application notes (http://www.avagotech.com/docs/AV02-3049EN) on page 4 one can read:
"The -3 dB video bandwidth of the VMMK-3313 by itself is approximately 30 MHz and is based on the expression..."
is this the bandwidth you mean?