Design of a rugged millimeter-wave doubler using a series varactor configuration

Abstract

A series diode microstrip doubler using a commercially available varactor diode has been developed using hard substrated technology in Q-band. The multiplier exhibited a conversion loss of less than 8 dB when driven by 200 mW. Temperature testing over the -60 to +100 degrees C range showed an output power variation of +or-1 dB. The design has exhibited the ability to withstand 30-g sine and 24-g rms vibration without failure.<>