Frequency Shift Keying FSK is a digital modulation technique in which the frequency of the carrier signal changes according to the digital signal changes. FSK is a frequency modulation scheme.
The ultra high frequency (UHF) radio frequency (RF) wireless receivers are designed to minimize the number of external components while maintaining RF design flexibility. These ISM band RF receivers are unique in that they consume only 3 mA in active mode. The RF transceivers for ultra-long-range, narrowband and wideband machine-to-machine (M2M) communications operate in the license-free ISM band at 433, 868 and 915MHz. They feature highly integrated RF transceiver chip architectures designed to maximize range, extend battery life, provide robust performance and minimize the use of external components.