NanoVNA is very tiny handheld Vector Network Analyzer (VNA),designed by edy555, it is a very portable but high-performance vector network analyzer. It is standalone with lcd display, portable device with battery.
Edy555 put his software at https://github.com/ttrftech/NanoVNA
View this link to get the original design documentation for edy555.
Again sweep the network analyzer over the desired frequency range. You may refer to the network analyzer manual for details. After subtracting the calibration data, PSRR data is plotted. Figure 3 shows an example of PSRR plot. Table 1 shows a list of network analyzers can be used with the TS200. List of network analyzers. Application: PQ-Box 200 is a high-performance, portable network-analyzer, power meter and transient recorder. User-friendliness was one of the main topics during development. The mobile device has been developed for mobile operation (protection degree IP65). Press the power button to power up the instrument first. Confirm if the Power LED is 8. Then, power on the PC, click the Network Analyzer icon to execute the VNA application. Select the required P50xxA, then click RUN. Confirm if the instrument status is green. See the Help: Quick Start SFP Launcher for more information. The network analyzer is controlled with a BeagleBone 'cape'. This board provides power management, reference clock synthesis, and routes IO pins on the BeagleBone to headers for the other modules. Clocks synthesis is done with an AD9577. Control of this chip is surprisingly simple over I2C, my software (almost) worked on the first try.
At first, NanoVNA was designed to work at 50kHz-300MHz. NanoVNA's mixer SA612A needs 5V power supply to work properly. The battery can't be driven directly. The original version of NanoVNA needs external USB power supply to work properly.Hugen recreated the NanoVNA based on the schematic of the edy555 and added a DC-DC circuit to allow the NanoVNA to work independently. Hugen tried to extend the measurement frequency using harmonics, allowing the NanoVNA to measure frequencies up to 900MHz. The Hugen version of the hardware and software is available through this link.
You can make or purchase a finished NanoVNA at a low cost. NanoVNA is now the most active vector network analyzer and antenna analyzer project in the community. Usually buying a finished NanoVNA-H is the most convenient way to get NanoVNA.
Edy555 is updating his software, harmonic extensions have been added, usually a well-made NanoVNA can be acquired better than 40dB dynamics at 900MHz . After community discussions, the improved NanoVNA-H rev3.4 and NanoVNA-H 4 can still have 40dB dynamics up to 1.5GHz. Thanks to the excellent performance of the improved NanoVNA-H Rev3.4, edy555 has increased the frequency limit of his 0.7.0 firmware to 2.7GHz, but users should be aware of the uncertainty measured above 1.5GHz.
Pqbox200 Power Network Analyzer Driver Download
Cho45 adds TDR (Time Domain Reflectometer) functionality to the NanoVNA. Time domain measurements are widely required by the community to quickly measure the length of the coaxial cable and determine the cable fault point by calculating the discontinuous impedance.