Ladies and gentlmen my apologies for the pause in the project development. There are some non-radio related troubles here and I have almost no free time for the radio. But the NEON project is alive and I will try to move it on with every minute of my free time...
I connected temporarily the Neon's IF Unit to the ADC on the DSP Unit of the T03DSP transceiver
and was able to measure parameters in quadrature mode. The full story is on the IF Unit page.
So now I need to design an ultra low noise synthesizer to match the Neon's RF fontend performance (the calculated IMD3 DR values are
107dB inside roofing filter and 116dB outside). The goal is to reach the synthesizer sideband noise better
then -140dBc/Hz@1kHz and -150dBc/Hz@10kHz - that will be a real challenge!..
The Control Unit hardware is almost ready. The new SOS3 real time OS (based on the
SOS/SOS2 RTOS) runs nicely on the STM32F103ZET6 (Cortex-M3 core).
I have to write a lot of the new code and port some old one (from the T03DSP)
yet, but you can view some pictures here already.
The links page was added. It will contain links to useful articles, related projects, datasheets
of the used ICs and various tools involved in the design process.
The site devoted to the project NEON was started...
All materials provided here are copyright by Oleg Skydan UR3IQO (unless otherwise explicitely specified). In all cases, materials are
provided for the purpose of self education
and training in Amateur Radio. No use may be made for commercial purposes without
permission of the author.
Please send any comments and questions to Oleg Skydan UR3IQO.
This page was last updated on 22.12.2017 18:28