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time of flight in at86rf233
Strange but interesting. Where is it used for ranging? What is the "ranging library"?   I understand that FCC might be worried about the system being re-calibrated without an...
Tuesday, 23 September 2014 - 18:59
Wifi and Zigbee Co-existence
This paper might be interesting:   See especially the figure 6. This illustrates quite well the idea of the above...
Tuesday, 16 September 2014 - 22:15
Atmega128RFR2 rx frame filter question
I double checked and guess what -- the crc in my almost random frame was accidentally correct! So, everything working as expected, nothing to see here folks... :)
Tuesday, 16 September 2014 - 21:48
time of flight in at86rf233
As I said, it is for measuring the carrier frequency difference, not distance. Distance would be impossible, of course.   By capacitor trims being too coarse, do you mean...
Tuesday, 16 September 2014 - 21:31
time of flight in at86rf233
For the original poster:   Like said before, seems like your problems are not related to TOM, get your communications working normally first.  
Friday, 12 September 2014 - 11:12
time of flight in at86rf233
This is an interesting new functionality, though it seems to be badly named.    It is meant for measuring the radio frequency (and preamble synchronization) difference...
Friday, 12 September 2014 - 10:49
Atmel SamR21
This is a very interesting new product line, however it's quite strange that there is no datasheets for any of the chips. I also have the Xplained board on hand, but do not know...
Friday, 4 April 2014 - 12:59
Balun/filter design for Atmega256RFR2
Thank you for your valuable input, I really appreciate it. This is an interesting topic indeed. I have been drawing, simulating and measuring more or less RF related PCBs since...
Thursday, 30 January 2014 - 12:03
Balun/filter design for Atmega256RFR2
Please do elaborate on "low performance". How many dB do you estimate to loose with custom balun vs. integrated balun? Many projects are not critical for link budget. If the...
Wednesday, 29 January 2014 - 15:31
Balun/filter design for Atmega256RFR2
Hmm, strange. Custom made balun seems to be very popular in the industry though. For example, i think TI and Nordic Semi use them in most of their example designs for low cost 2....
Wednesday, 15 January 2014 - 08:06
AT86RF230 End Of Life
By the way, the official replacement for AT86RF230 is AT86RF233. However, switching to RF233 will naturally void all certifications, as it is both electrically and logically...
Monday, 21 October 2013 - 11:53
AT86RF230 End Of Life
I also have a couple of certified products which use the AT86RF230 and I agree that the communication from Atmel's part has been bad. Even now I cannot find conclusive EOL...
Monday, 21 October 2013 - 11:38