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AD-FMCOMMS1-EBZ  No OS Reference design - Signal Injection 802.11b

Question asked by DrTom on Feb 9, 2013
Latest reply on Feb 11, 2013 by DrTom

I have the No OS ref design running. I get the nice sinusoid waveforms on Chipscope using the RX,TX on antennas. I changed the receiver & transmitter to 2.412Ghz (802.11b channel 1) and it still gives me the nice sinusoidal output waves. I then disconnected the receiver antenna and connect the receiver's  SMA connector to a router through a cable with a 10db attenuator. The waveform looks like it did before but greatly attenuated but the waveform does not change if the router is powered or un-powered. The waveform I am seeing is from the FMCOMMS tranmitter and not from the router.

Can anyone tell me what I am doing wrong or interpreting wrong?


                           Transmitter ON but Receiver Connected to Router through cable



                              Transmitter and Receiver on Antennas