“Design and Simulation of GaussianFSK Transmitter in UHF Band Using Direct Modulation of ΣΔ Modulator Fractional-N Synthesizer”, alkej, vol. 4, no. 3, pp. 1–7, Sep. 2008, Accessed: Apr. 30, 2025. [Online]. Available: https://www.alkej.uobaghdad.edu.iq/index.php/alkej/article/view/588