2.4Ghz to 10Ghz Satellite transponder
I am thinking of building a 2.4Ghz up link to 10Ghz Down link Satellite Transponder
10Ghz Up-link and 2.4Ghz down link or the 2.4Ggz up link and 10Ghz down
Up-link 2.4 to 10Ghz can reasonably easy be done with SDR (pluto using first harmonic on output for 10Ghz)
I wanted to do it with SDR and was looking for reasonably priced Full duplex TX/RX SDR and was looking at the Pluto Plus SDR
see details here for using Python to controller the Pluto
https://pysdr.org/content/pluto.html
Looking at the Band Plan at 2.4Ghz
It seems we have about it seems we can use the band from about 2320Mhz up to 2400Mhz
10Ghz Band Plan
and on the 10Ghz Band 10Ghz up to 10.500Ghz
So 2.4Ghz uplink and 10Ghz downlink could easily be done with pluto plus and raspberry pi 3 using Gnuradio using the first harmonic on 5Ghz
 |
| 10Ghz Micro strip Band pass filter |
installing qusc-rflayout
cd
git clone https://github.com/thomaslepoix/Qucs-RFlayout.git
cd Qucs-RFlayout/
ls
mkdir build
cd build
cmake ../
make
sudo make install
see if it works by running it
qucsrflayout
Create the netlist using the following command (input file output file)
sudo qucs -n -i "/usr/share/qucs/examples/microstrip.sch" -o "/usr/share/qucs/examples/microstrip.net"
Ground station equipment same as QO-100
Creating pcb
Using the Qusc-RFlayout utility to create the pcb from design
select your sch file and click read
Then select the output folder at the bottom and select write to create the kicad pcb file
Open the kicad_pcb file in kicad
Here is the curve simulated on Qucs
Band pass section
Installing qucs from this url https://github.com/thomaslepoix/Qucs-RFlayout
Here is the circuit diagram of my 10 Ghz RF amp design
Simulating the rf Stub (3.9mm 90deg)
1/4 wave stub at 10ghz
Ref :using micro strip calculator Qucs
