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Passive Subharmonic Generation Using Memoryless Nonlinear Circuits

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2 Author(s)
Safarian, Z. ; Dept. of Electr. Eng.-Electrophys., Univ. of Southern California, Los Angeles, CA, USA ; Hashemi, H.

A passive subharmonic generation and frequency downconversion method using a memoryless nonlinear circuit coupled to a linear passive resonator is presented. The frequency downconverter can be used to transfer the energy from a high-frequency signal to a lower frequency without requiring any dc power supply. In the synchronous mode, the passive downconverter acts as a self-powered frequency divider. The characteristics of the self-powered frequency downconverter have been studied analytically, and design tradeoffs have been shown for the specific case of a cross-coupled differential pair nonlinearity. As an example, a low-frequency prototype is implemented with discrete components. Analytical results and design procedures are verified in discrete and integrated prototypes.

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:60 ,  Issue: 12 )