Erratum for: Miniaturized lowpass filter with wide band rejection using modified stepped-impedance hairpin resonator

Wideband Bandpass Filter Using Stepped Impedance Resonator with Susceptibility Test

A stepped impedance resonator (SIR) based wideband bandpass filter (BPF) with a good rejection level in the extended upper stopband is presented in this article. The proposed SIR is found to have the ability to introduce two transmission poles in the passband. By appropriately selecting the impedance ratio and length ratio (α) of the SIRs, the BPF can provide a wide passband and a sharp rejecti...

Compact Microstrip Bandpass Filter Using Miniaturized Hairpin Resonator

A compact microstrip bandpass filter using miniaturized hairpin resonators is presented in this letter. Two modified stepped impedance hairpin resonators connected by parallel coupling are designed for the bandpass filter. The proposed miniaturized hairpin resonator is composed of a microstrip line and rectangular ring structures between parallel high impedance lines. A big capacitance in the h...

Design and Analysis of Ultra-wide Band Bandpass Filter Using Spiral Stub-Loaded Triple-Mode Resonator with a Notched Band

An ultra-wide band band-pass filter using novel spiral stub-loaded triple-mode resonator (SSLTMR) is presented. New spiral stub loaded resonator is analyzed with odd and even modes analysis for this class of BPF, achieving higher band wide and size reduction. In order to have a good response characterized, two (SSL-TMRs) and two quarter wavelength digital coupled lines are used. This new design...

Wide Stopband and Sharp Roll-off Microstrip Lowpass Filter using Modified Rhombic Shaped Resonator

Microstrip Stepped Impedance Resonator Bandpass Filter With an Extended Optimal Rejection Bandwidth

Bandpass filters with an optimal rejection bandwidth are designed using parallel-coupled stepped impedance resonators (SIRs). The fundamental ( ) and higher order resonant harmonics of an SIR are analyzed against the length ratio of the highand lowsegments. It is found that an optimal length ratio can be obtained for each highto lowimpedance ratio to maximize the upper rejection bandwidth. A ta...