Descriptions:

LibreVNA (TM) is a USB based full 2-port vector network analyzer designed by Jankae. Using 3 ADCs to sample data simultaneously and using FPGAs for signal processing, it is capable of scanning over 10,000 points of full dual-port measurements in less than 1 second. The ultra-low noise power supply design and the use of 16bit ADC, together with the precision CNC's aluminum shielded housing, achieve up to 100dB of effective dynamics. Many aspects are already comparable to lab-grade VNAs, but this is still an outgoing project. Some design features may not be perfect, especially the performance will drop when the frequency is higher than 3GHz, please fully understand the possible limitations before buying this machine. If you have any suggestions for future releases, please feel free to contact us as well.

Specifications:

Impedance: 50Ω

Test Port Connector: SMA, female

Number of Test Port: 2

Frequency Range: 100kHz to 6GHz

Frequency Accuracy: <2ppm

Number of Measurement Points: 2 to 4501

Speed 2-port - 4000 pts: <500ms (IFBW=50 kHz )

Measurement Bandwidths: 10Hz to 50kHz

Dynamic range (IFBW 10Hz): > 95 dB to 3GHz ,  > 50 dB to 6 GHz (Note 1)

Measurement parameters: S11, S21, S12, S22

Reflection directivity: > 40 dB (after calibration) (Note 2)

Output power: -40 dBm to 0 dBm (Note 3)

Power Supply: DC 5V, 1.5A(USB powered, or 3.5mm connector)

Power consumption: approx. 7W.

Interface: USB type-C

Supported Operating System: Windows, Linux

External Reference Input: SMA female; 10 MHz;

External Reference Output: SMA female; 10 MHz or 100MHz;

Further measurement options: Simple spectrum analyzer(Lack of mirror suppression and slower speed), Signal generator(Not precisely calibrated)

Feature:

1. Vector Network Analyzer

LibreVNA is a USB based full 2-port vector network analyzer designed by Jankae. Using 3 ADCs to sample data simultaneously and using FPGAs for signal processing, it is capable of scanning over 10,000 points of full dual-port measurements in less than 1 second.

2. Widely Frequency Range

The LibreVNA Antenna Analyzer provides a 100kHz to 6GHz ultra-wide frequency range(previous vna analyzers are about 10KHz-1.5/3GHz),the Frequency Accuracy is <2ppm,Due to structural limitations, S12 isolation is 10dB worse than S21. Above 3GHz, the performance decreases with increasing frequency, and the port isolation is only 50dB at 6GHz. Below 1MHz, the performance decreases with decreasing frequency, and the effective dynamic decreases to 70dB at 100kHz.

3. Powerful Function & Firmware Update

The ultra-low noise power supply design and the use of 16bit ADC, together with the precision CNC's aluminum shielded housing, achieve up to 100dB of effective dynamics. Many aspects are already comparable to lab-grade VNAs, but this is still an outgoing project.Support Firmware Update,can load a new microcontroller firmware and FPGA configuration into the LibreVNA. Do not disconnect power while updating the firmware!

4. Full S-Parameters Measurements

In Vector Network Analyzer operating mode, the LibreVNA can measure the complete S11, S21, S12 and S21 parameters. A source signal is generated and alternately applied to the RF ports. The incoming signal at both RF ports is measured, resulting in the four S-parameters S11 and S21 (when the source signal is routed to port 1) as well as S12 and S22 (when it is routed to port 2).

5. Can Be a Signal Generator & Spectrum Analyzer

Although the LibreVNA hardware is not designed to be used as a spectrum analyzer, the general hardware architecture of a spectrum analyzer is similar enough to that of a VNA to implement basic two-channel spectrum measurements. This is in no way on the same performance level as a dedicated spectrum analyzer but for simple measurements it might suffice if no other equipment is available.

Note 1:Due to structural limitations, S12 isolation is 10dB worse than S21. Above 3GHz, the performance decreases with increasing frequency, and the port isolation is only 50dB at 6GHz. Below 1MHz, the performance decreases with decreasing frequency, and the effective dynamic decreases to 70dB at 100kHz.

Note 2:The use of higher accuracy calibrators allows for higher precision measurements.

Note 3:The output power may decrease when the frequency is lower than 1MHz or higher than 3GHz.

Package include:

1 x LibreVNA host

1 x USB type-C data cable

1 x USB power cable

2 x 30cm SMA male to male SS405 RF cable

1 x SMA male calibration kit - OPEN

1 x SMA male calibration kit - SHORT

2 x SMA male calibration kit - LOAD

2 x SMA female to female connector

2 x SMA male to male connector

1 x English manual