Design of Ultra-wideband Low-Cost DC Block

In this paper, DC block for planar circuit is researched. Firstly, the Capacitance of DC is calculated. Secondly,based on the equivalent circuit model of surface mount capacitor, the effect of the package size and component number are analyzed. Finally, a DC block worked at 0.1-10 GHz is developed. Measured results show that this its performances meet can meet the design requirements.