A capacitive fingerprint system is the most widely used biometric identification method for smartphones. In this paper, we propose a RF sensor-based liveness detection scheme. This method solves the ...

But the RF stage consumes power at idle status. Even at sleep status leakage current may cause power loss. In order to consume the least energy, then, RF circuit should be shut down when they are not ...

CMOS mixers are integral components in modern radio frequency (RF) circuit design, enabling frequency conversion in wireless systems while prioritising low power consumption. Recent progress in ...

Real-world applications Below is the circuit from Figure 14, which uses the RF transformer and is powered by a solar cell illuminated by a candle (approximate output of 1 foot-candle). Solar cell ...

This passive RF differential probe is a cost-effective solution for in-circuit measurements of RF systems operating within the frequency range of 500 MHz to 6 GHz. It is well-suited for situations ...

Renesas unveiled two 2.4GHz RF transceiver technologies supporting the Bluetooth® Low Energy low-power near-field communication standard at ISSCC 2022 ...