Uwb-BPF With Application Based Triple Notches and Suppressed Stopband

Abstract

Abstract-An ultra-wideband (UWB) bandpass filter (BPF) with application oriented triple notches and simultaneously suppressed stopband is proposed.Implementing complementary split ring resonator (CSRR) and novel complementary meandered folded split ring resonators (CMFSRR) shaped defected ground structures (DGS) in the ground of proposed structure generates the triple notch in the UWB passband. The notch positions are functions of CSRR/CMFSRR profile dimensions. Stopband is suppressed using the dual attenuation poles generated by the double equilateral-U (DEU) shaped DGS. An approximate lumped equivalent circuit model of the proposed filter is presented. Measured results obtained are in good agreement with the equivalent circuit model and full wave electromagnetic (EM) simulation. The filter is small in size with an overall area of 26.06 mm× 11 mm.

A Parametric Analysis of Modified Complementary Split Ring Resonator Low-Pass Notch Filter Suitable for the Coexistence of 5.8 GHZ DSRC and 5.9 GHZ Its Applications

“…The technologies taken into consideration, in addition to coplanar split-ring resonator [5,6,12], are the transmission line defected ground structure [4], stepped-impedance stub-loaded resonator [13], and composite right/left-handed [14]. The comparison is made in terms of the insertion loss (IL) exhibited at both the pass-and stop-frequencies, and specifically we calculated figure of merit slope = 10 9 |(IL pass − IL stop )/(f pass − f stop )|.…”

“…From a behavioral point of view, DGSs act as parallel L-C resonators which resonate at given frequencies, depending on the their dimensions and shapes. Several applications demonstrate the potentiality of this structure as passband and stopband (notch) filter [5].…”

“…In this paper, we consider the resonant structures described in [7], referred to a complementary split ring resonator (CSRR) as shown in Fig. 2(a), for which semi-analytical models for the design of notch filter and bandpass filter already exist [5,10]. Nevertheless, simulations of those structures carried out by using a commercial CAD exhibited a high-pass notch behavior and a transition bandwidth too large for the specific purpose of the targeted applications.…”