A Design Study of a Miniaturized Equalizer Based on CSRR Structure

In this paper, a microstrip equalizer based on a new resonant structure of CSRR is designed by cascading the resonant characteristics of CSRR, loaded on an alumina ceramic substrate. Compared with the conventional dendritic resonator, the resonator of CSRR structure has better capacitive and inductive characteristics and can reduce the circuit size with the same index. Modeled by HFSS simulation, the designed equalizer has a volume of 9. 2mm$\times$ 6mm$\times$ 0.254mm, a maximum equilibrium of 13dB in the 10GHz to 16GHz band, a minimum insertion loss of 0. 9dB, and a return loss better than 11dB. This paper provides a new idea for the design of miniaturized equalizer in low frequency band.