Thorben_1992
Newbie level 2
Hello everybody,
I´m measuring the impedance and the sensitivity of a RFID IC. First I was measuring the Impedance of the IC. After this step I was designing a matching network which transforms the 50 Ohms SMA-Connector to the Impedance of the IC.
The impedance matching of the IC with this matching network is great (measurement:s11<-30dB). Since the IC is fully passive and works with Energy Harvesting, the figure of merits is the sensitivity, how much input power is required for power up the IC.
Now the strange thing: The sensitivity is better with a matching network, which is not very well matched (s11 ~ -7dB). The difference is around 2dB.
Has anybody an idea, what could be a possible reason? I have really no idea.
Thanks a lot and best regards
Thorben
I´m measuring the impedance and the sensitivity of a RFID IC. First I was measuring the Impedance of the IC. After this step I was designing a matching network which transforms the 50 Ohms SMA-Connector to the Impedance of the IC.
The impedance matching of the IC with this matching network is great (measurement:s11<-30dB). Since the IC is fully passive and works with Energy Harvesting, the figure of merits is the sensitivity, how much input power is required for power up the IC.
Now the strange thing: The sensitivity is better with a matching network, which is not very well matched (s11 ~ -7dB). The difference is around 2dB.
Has anybody an idea, what could be a possible reason? I have really no idea.
Thanks a lot and best regards
Thorben