I'm a DAFE in Japan. Our customer is interested in ADM2867E due to Low Radiated Emissions. Then he wants to know the data of Radiated Emissions higher than 1GHz. Could you please give us it?
The data was gathered between 1GHz and 4GHz in anechoic chamber 3m from a horizontal antenna, which is the worst case orientation.
With peak detector the maximum emission from the evaluation…
Please see attached peak scan:
Hi Neil, thanks for the feedback.
The 4.205 GHz is gone, when Vcc is disconnected. The 3.77 needs Vio and the UART to be down.the 3.77GHz look like this (Frequency depends slightly on temperature:I will send the 4.205 when I get it.Regards,Thomas
Regarding GND2- we do not have a plane for GND2, it looks like this:
We will interrupt it with an inductor close to the chip and see if it helps.Regards,Thomas
Good Morning,Current finding: any modification on the GND2 structure has no effect on the emission.Regards,
We still do not have any improvement on this topic.do the slower Versions (ADM2863) have different characteristics in this regard?
One additional comment, the spurious we measure is about the same as shown above in your measurement. Unfortunately we have to test against the Radio emitting standard in RX mode, which is lower.