Experimental Study of FM Complex Differentiation Using HackRF

Various innovations in wireless communication systems were created to get devices with optimal performance and configurable. FM receiver systems which generally consist of analog components began to shift to more sophisticated devices. Software Defined Radio (SDR) is a software configurable radio receiving device. This paper describes the implementation of a complex differentiation FM receiver based on an SDR device. HackRF is an SDR device with a frequency band that can be used as a signal receiver from FM broadcast transmitters. The FM signal will be received by HackRF which serves to downconvert the signal. The FM signal is mixed with a complex exponential signal at a local frequency to be demodulated. The result of mixing these signals produces in-phase and quadrature signals. The signals are processed separately or can be called complex differentiation discriminators. These complex differentiation distinctions are described at each stage of the mathematical analysis. The results obtained from this differentiation complex FM receiver indicate that HackRF can be used as a complex differentiation FM receiver.