N2PK Vector Network Analyzer

An affordable 0.05...50MHz home made VNA of a Lab quality from Paul Kiciak, N2PK

This page is about my implementation of the N2PK Vector Network Analyzer (VNA), which is a lab quality instrument designed by Paul Kiciak, N2PK. If you have not heard about N2PK VNA before, I recommend you to read through the set of comprehensive materials available from Paul N2PK's WEB site archive hosted on this site. The N2PK Web site was shut down in April 2020 and all information was transferred to this site in a form of browsable archive on behalf and with permission of the owner, Paul Kiciak, N2PK.

The N2PK VNA Archive also has information how to subscribe to N2PK VNA mailing list, so that you could learn from and exchange information with others about hardware builds, troubleshooting techniques, part replacements, software use, etc. If then you decide you want to build it, you are welcome to come back here, where I will be posting information about my experience with the VNA.

  The project main page with the history
VNA enclosure article
The assembled prototype board pictures
Construction of a bridge for the reflection measurements
Modification of the reflection bridge to improve its directivity
The unit construction hints and tips
Results of the noise test, showing the dynamic range of the VNA
The schematics
Latest PCB v5.x with on-board USB support
The parts list (BOM)
Screenshots of the practical measurement sessions
A homebrew transverter to extend the VNA frequency range to VHF/UHF and higher while keeping good measurements accuracy
A 70dB 1GHz Digital Step Attenuator. A perfect accessory for the N2PK VNA.
Comparisons of different network analyzers currently available on the Ham Radio market. Research performed by Rudy Severns, N6LF.
A handy Return Loss/SWR tool which you may find very useful when working with the VNA and simply for your daily needs around the shack
PCB kits availability
Assembled VNA

Thanks for dropping by and reading this page. Please feel free to contact me via the email address at the bottom of this page if you have questions.

Contact: miv@makarov.ca