The impedance-loaded loop antenna is theoretically analyzed, in steady state using the Fourier series expansion technique. An expression is derived for the receiving transfer function or sensitivity. An equivalent circuit for the receiving antenna is presented. Numerical results are provided to illustrate the dependence of sensitivity on frequency, loop radius, distributed resistance and incident wave direction. The time-domain receiving response of a resistively loaded loop antenna for Gaussian and differentiated-Gaussian incident wave pulses is calculated and the numerical results are discussed.