SIMILARITY CONSIDERATIONS FOR VARACTOR MULTIPLIERS

摘要

The systemization of varactor multiplier results by the methods of dimensional analysis shows that additional experimental work is required to develop a better equivalent circuit to represent the varactor in the VHF region. Detailed mathematical analyses based on the depletion-layer will nevertheless be of considerable value, since it is likely that this equivalent circuit is approached in the microwave region. The results that have been derived for efficient multipliers show that theoretical analyses of efficiency will not likely form the basis of choosing the harmonic order to be preferred in practical multipliers, nor will such theories provide an indication of optimum fundamental frequency. These choices will be based on practical considerations such as circuit simplicity and transistor availability.