A simple and cheap vector network analyzer, including support software.
As seen on kickstarter: https://www.kickstarter.com/projects/1759352588/xavna-a-full-featured-low-cost-two-port-vna
Directory layout
- libxavna: C & C++ library for accessing the hardware, see README.md in subdirectory for more info
- vna_qt: QT GUI
- pcb: schematics, pcb layouts, and simulation files
- vhdl: circuitry implemented on the fpga
Spec 8000 ifications
- Frequency range: guaranteed 137MHz - 2500MHz, typical 135MHz - 3500MHz
- Output signal level (configurable in software): -20dBm to 10dBm, with 1dB increments
Interfacing
- The main board connects to a PC through usb and communicates via a virtual serial port device; the PC software sets the frequency and other parameters by sending two-byte register write commands, and the device sends averaged vector values representing magnitude and phase of measured waves.
For pre-compiled executables go to: https://github.com/xaxaxa-dev/vna/releases
Building on linux
Build libxavna (required for QT GUI):
sudo apt-get install automake libtool make g++ libeigen3-dev libfftw3-dev
cd /PATH/TO/vna
autoreconf --install
./configure
make
cd libxavna/xavna_mock_ui/
/PATH/TO/qmake
makeBuild & run QT GUI:
sudo apt-get install libqt5charts5-dev
cd /PATH/TO/vna
cd vna_qt
/PATH/TO/qmake
make
export QT=/PATH/TO/QT # e.g. ~/qt/5.10.1/gcc_64
../run ./vna_qtBuilding on mac os
brew install automake libtool make eigen fftw
cd /PATH/TO/vna
./deploy_macos.sh
# result is in ./vna_qt/vna_qt.appCross-compile for windows (from linux)
Download and build MXE:
cd ~/
git clone https://github.com/mxe/mxe.git
cd mxe
export QT_MXE_ARCH=386
make qt5 qtcharts cc eigen fftw pthreadsEdit mxe/settings.mk and add i686-w64-mingw32.shared to MXE_TARGETS.
Build
cd /PATH/TO/vna
export PATH="/PATH/TO/MXE/usr/bin:$PATH"
./deploy_windows.shT/R version
- fpga: XC6SLX9-2TQG144C
- adc: AD9200
- mixer: AD8342
- synthesizers: ADF4350
- rf switches: BGS14GA14
- programmable attenuator: PE4312
Full two port version
- fpga: XC6SLX9-2TQG144C
- adc: ADC10080
- adc driver: ADA4932-1
- mixer: AD8342
- synthesizers: ADF4351
- rf switches: RFSW6024, BGS12PL6
- programmable attenuator: PE4312