Title : 
Aperture-backed microstrip stepped impedance resonator with ultra-broad rejection bandwidth
         
        
            Author : 
Wang, H. ; Zhu, L.
         
        
            Author_Institution : 
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
         
        
        
        
        
        
        
            Abstract : 
An improved microstrip stepped impedance resonator (SIR) with backed aperture is developed for the purpose of effective suppression of multiple spurious resonances. By backing the aperture at the centre and widening the strip widths at two sides, this novel SIR with miniaturised size achieves the ultra-broad rejection bandwidth of 4.0 to 17.6 GHz, as exhibited in the simulated and measured results.
         
        
            Keywords : 
microstrip resonators; resonance; 4 to 17.6 GHz; backed aperture; microstrip stepped impedance resonator; multiple spurious resonance suppression; strip widths; ultrabroad rejection bandwidth;
         
        
        
            Journal_Title : 
Electronics Letters
         
        
        
        
        
            DOI : 
10.1049/el:20045805