In this program we study the idea of mixing in a super heterodyne receiver. To be specific, consider the block diagram of the mixer shown in Figure that consists of a product modulator with a local oscillator of variable frequency ?_b followed by a band-pass filter. The input signal is an AM wave of bandwidth 10 kHz and carrier frequency that may lie anywhere in the range of 0.535 to 1.605 MHz; there parameters are typical of AM radio broadcasting. It is required this signal to a frequency band centered at a fixed, intermediate frequency (IF) of 0.455 MHz Find the range of turning that must be provided in the local oscillator to achieve this requirement.

Band-pass filter uzl) si) cos (2f,) -