MULTI-HARMONIC DC-BIAS NETWORK BASED ON ARBITRARILY WIDTH MODULATED MICROSTRIP LINE

In this work, we present a novel DC-bias network for multi- harmonic microwave circuits based on an arbitrarily width-modulated microstrip line. The arbitrary shape of the width-modulated microstrip line is obtained by using multiple microstrip taper sections. The method is illustrated through the design of four difierent DC-bias networks blocking from 1 to 4 harmonic components of a 2.5GHz signal. The designs with an optimum shape for the arbitrarily width- modulated microstrip line have been manufactured and measured, obtaining a good agreement between the simulated and measured behavior.