Broadband Frequency Doubler/Multiplier

Abstract

This paper discusses the design and performance of a low cost broadband frequency doubler/multiplier realized in microwave integrated circuit (MIC) technology. The doubler/multiplier make use of four beam lead schottky diodes in bridge configuration for doubling along with a broadband balun as an feeding network. The complete design is realized on Rogers RO4003 8mil substrate. Measured result shows a conversion loss of 6.2dB to 17.8dB with fundamental suppression of more than 20dB for an input frequency of 3.6 – 18.5GHz.