In my haste, I had forgotten about reverse polarity SMA connectors (RP-SMA). I then proceeded to try to sort through a number of antennas to compare them and things got real flakey and in one case showed that I had an open antenna!
I calibrated a range of 2.3-2.8 GHz to have a look at a WiFi antenna.Īnd a quick look at a LoRa antenna (re-calibrated to 850-950 MHz range). Here's a quick shot of the Smith chart on the unit after calibration with a 50 ohm load at the end of the test cable. Computer software compatible: Linux, Windows (7+).Display tracking: 4, mark: 4, save settings: 5.Port 2 return loss: >= 13dB (to 3GHz), 20dB (to 1.5GHz).
System dynamic range (after calibration): 70dB (50k to 1.5GHz) 60dB (to 3GHz).SEESII Nanovna 10kHz-3GHz Vector Network Analyzer With Metal Case The kit comes with a couple of 12" SMA Male to SMA Male cables and the calibration plugs (open/short/50 ohm load) and a barrel adapter and USB cable. The primary interface is a 3.2" TFT (320x480) touchscreen, but I plan to use it mostly over the USB interface using the VNA_QT software. The 3GHz range will let me test all of the antennas that I currently have (LoRa, WiFi, Bluetooth, cellular) with the exception of testing at the 5.8GHz WiFi frequency. I got an unofficial hardware clone from Amazon that copies the NanoRFE design and is firmware and software compatible, but may not meet the full performance specs. Since my main requirement is BLE and WiFi, I decided to buy a 3GHz V2 model (currently V2 only goes to 4GHz although there is a V3 model coming that will go to 6GHz and has a lot better performance, but at a much higher price). I've seen reviews in the community and on the internet and the NanoVNA seems to be a handy tool to have in one's toolkit. I just haven't had a compelling reason to get one until now. I've wanted to get a NanoVNA for a while. I'm starting a project involving BLE Transmitter testing and I needed something to help me select some antennas to use.
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