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The SNR of a Frequency Doubler

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2 Author(s)
Oberst, J. ; Bell Telephone Labs.,Inc., Holmdel, NJ, USA ; Schilling, D.

The output signal-to-noise ratio (SNR) of a frequency doubler is calculated using the transform method for nonlinear systems with stochastic inputs. The class of nonlinearities considered is the even V th-power-law devices. It is found that the squarer ( V = 2 ) is optimum at low SNR, while for high SNR, V \rightarrow 0 is best. Choice of the bandpass filters in the system is also considered.

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Communication Technology, IEEE Transactions on  (Volume:19 ,  Issue: 1 )