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Frequency response of passive return-to-zero downconversion mixer
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promach:
Why for fourier analysis/representation of square wave, the book snippet shows first harmonics to have amplitude of 2/pi  ?

https://en.wikipedia.org/wiki/Square_wave#Fourier_analysis


--- Quote ---In the frequency domain, this harmonic consists of two impulses at ±ωLo , each having an area of 1/pi. Thus, as shown in Fig. 6.18(b), the convolution of an RF signal with these impulses creates the IF signal with a gain of 1/pi ( ≈ -10 dB).
--- End quote ---

Could anyone elaborate on the above book sentence quote ?



T3sl4co1l:
Amplitudes are peak, not RMS.  Not that that matters regarding the factor of pi, for which that's simply the amount needed to reconstruct a square wave.

Tim
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