Fourier transforming microwave impulses using low-cost analog circuits

Summary form only given, as follows. A low-cost analog circuit architecture to acquire the (complex-valued) spectrum of microwave impulses is designed. The proposed architecture consists of multiple channels to down-convert the input signal, each of which obtains a small portion of the input´s spectrum. The multiple narrow-band outcomes are then merged to construct the entire wide-band spectrum. The input signal´s spectrum obtained by our circuit shows excellent agreement with the data measured by a 40-GHz oscilloscope.