“Design and Simulation of GaussianFSK Transmitter in UHF Band Using Direct Modulation of ΣΔ Modulator Fractional-N Synthesizer”. Al-Khwarizmi Engineering Journal 4, no. 3 (September 1, 2008): 1–7. Accessed May 2, 2024. https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/588.