Analog Fourier Transform Channelizer and OFDM Receiver

An OFDM receiver, comprising:

• an RF I-Q receiver constructed and arranged to receive an externally generated signal band, downconvert received externally generated signal band to an in-phase baseband signal and a quadrature baseband signal;
• an analog multiplier based I-Q channelizing filter, comprising:
• a sample and hold circuit, constructed and arranged to sample and hold N consecutive analog sample pairs, each sample pair being a sample of the in-phase baseband signal and a sample of the quadrature baseband signal, and concurrently output the N consecutive analog sample pairs as N held analog sample pairs, and
• an analog-multiplier based Fourier Transform circuit, having N inputs, N outputs, and a plurality of analog multipliers and analog summers connected between said N inputs and N outputs, constructed and arranged to receive said N held analog sample pairs on said N inputs, to and output on said N outputs a corresponding N analog transform signals, representing an N-point discrete Fourier transform of said N held analog samples, each of said N analog transform signals having an in-phase component signal and a quadrature component signal having respective magnitudes and polarities representing an I-Q phase and magnitude;
• and
• a phase shift decoder constructed and arranged to receive at least one of the N analog transform signals and to output a corresponding binary data, based on said I-Q phase and magnitude.