CERAMIC WAVEGUIDE FILTERS WITH WIDE SPURIOUS-FREE STOPBAND RESPONSE

Spurious Response Suppression in Waveguide Filters using E-Shaped Chiral Resonators

In this paper, chiral E-shaped resonators are used in a waveguide. Direction of EM wave and position of resonators for effective excitation is studied and various resonances of E-shaped resonators are determined. As a consequence an analytical equivalent circuit model is proposed. Finally, an array of these resonators is used to realize a wide reject band. The resulted band stop filter performa...

UWB-Bandpass Filters with Improved Stopband Performance

High-Q Dielectric Combline Resonator with Wide Spurious Free Performance

Lower dielectric constant material loaded Combline resonators achieve high-Q and excellent spurious free performance is presented. A design and characteristics are discussed. Simulated responses are presented in this paper. Index Terms combline resonators, permittivity. dielectric constant,

Microstrip Bandpass Filters Using End- Coupled Asymmetrical Step-impedance Resonators for Wide-spurious Response

This paper proposes asymmetrical step-impedance resonators bandpass filters (ASIRs) for suppressing a wide stopband, ensuing in size reduction and ease of fabrication. The filters have been designed at the operating frequency around 2.0 GHz using halfand quarter-wavelength asymmetrical step-impedance resonators. The concept of existent oddand even-mode characteristics is used to approve the pro...

Wideband Dual Mode Bandpass Filter with Wide Spurious Response Suppression

Wide Spurious Response Suppression Surin Ahonnom1 ,Somsin Wangkhuntod 2 , Prayoot Akkaraekthalin 3 2 , 1 Department of Electronic Engineering Faculty of Engineering and Architecture Rajamangala University of Technology isan, 477 suranarai Rd. Muang, Nakhonratchasima 30000, Thailand. E-mail: [email protected], [email protected] 3 Department of Electrical Engineering, Faculty of Engineering ...