A comparison of the transient response of amplitude-modulated and frequency-modulated signals

The paper is an analytical investigation of the transient response of resistance-capacitance and resistance-inductance circuits, filters and transmission lines to a frequency-modulated voltage, using a unit-step function as modulating signal. The transient response is compared with that which is known to occur when the voltage is amplitude modulated, using the same modulating signal. The effects, on the response, of the bandwidth of circuits subsequent to the detector stage of a receiver are compared for the two types of modulation.