helpniom.blogg.se - Nanovna v3

Info about the baseband VGA design: A RFIC switch is used to switch the shunt resistor in the feedback path.The performance should be comparable or better to V1.The Audio codec is removed and the stm32 built in ADC is used instead.A variable gain amplifier is added at baseband using one opamp and switched feedback resistors for improved dynamic range.The 3 mixers are replaced with one higher spec mixer (ad8342) that is switched between the 3 channels.It's going to be based on the adf4350 + si5351.The nanoVNA will eventually reach 3GHz (and at a similar price to version 1).Over on the NanoVNA groups.io forums we've seen discussion about a NanoVNA hardware version 2.0 being in the works and it could be ready as soon as January 2020. Previously we've been posting about the NanoVNA which is an open source VNA project by / ttrftech that has recently become extremely affordable at less than US$50 for a fully assembled unit thanks to Chinese manufacturing (or a little more if you order it via Amazon).

OctoA NanoVNA 2.0 is in the Works: Same Price, Frequency Range up to 3.5 GHz, Higher Dynamic Range

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GOES 16/17 and GK-2A Weather Satellite Tutorial.