First test

A project log for RF backscatter module

An RF transmitter module, that use strong RF signals to transmit data by partially reflecting it.

JulienJulien 07/11/2018 at 11:370 Comments

Today I built a quick pcb with a pine diode and an SMA connector. The pin diode switch between a sort and an open circuit.

The pine diode I used was not the best choice, but the only I already have in my pile of junk. I tested it with my VNA, to metter the impedance change.

It's a big fail. My two impedances are near the same ... the impedance doesn't change from a short...

Maybe this IC was damaged, because it was unsoldered on junk, maybe also I heated it too mutch, or even it's because I missed to add a DC blocking capacitor.