Design of an ultra-wideband power sensor based on zero-bias diodes

This paper reports on the design and experiment of an ultra-wideband power sensor from 0.01GHz to 67GHz based on discrete zero-bias diodes. Emphasis is on the design of the matching circuits using a smart method. Other details such as the choice of diodes and the implementation of the microwave front end are also discussed. High performance has been achieved across the frequency band desired, which shows that the method is feasible.