This paper presents the synthesis and design of multi-mode dual-band bandstop filter (MM-DBBSF). A highly selective response is obtained using a quarter wavelength coupled line structure. It has been shown that by increasing line's order, selectivity transmission zeros are increased in desired stopband. Moreover, step impedance resonator (SIR) used between two lines to achieve more poles for be...

In this study, a novel compact bandstop filter (BSF) by utilizing the defected ground structure (DGS) and microstrip (DMS) techniques are presented. DGS, DMS, compensated capacitors used on both bottom top layers to obtain sharp transition wider stopband. The operating frequency bandwidth of can be comfortably regulated tuning dimensions etched structures. addition parametric studies, an equiva...

We propose, for the first time, neural space-mapping (NSM) optimization for electromagnetic-based design. NSM optimization exploits our space-mapping (SM)-based neuromodeling techniques to efficiently approximate the mapping. A novel procedure that does not require troublesome parameter extraction to predict the next point is proposed. The initial mapping is established by performing upfront fi...