Title :
Microstrip multistage coupled ring bandpass filters using spur-line filters for harmonic suppression
Author :
Griol, A. ; Marti, J. ; Sempere, L.
Author_Institution :
ITACA Res. Inst., Univ. Politecnica de Valencia, Spain
fDate :
4/26/2001 12:00:00 AM
Abstract :
Bandpass filters based on microstrip coupled ring resonators including spur-line filters to suppress higher harmonics have been investigated. Two topologies based on placing spur-line filters into or out of the coupled rings have been considered and compared. A harmonic suppression ratio >30 dB in a flat bandpass filter centred at 2.44 GHz is obtained placing spur-line filters into and out of the microstrip coupled rings
Keywords :
UHF filters; band-pass filters; harmonics suppression; microstrip filters; notch filters; passive filters; 2.44 GHz; harmonic suppression; higher harmonics; microstrip bandpass filters; microstrip coupled rings; multistage coupled ring filters; second-order harmonics; spur-line notch filters;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20010376
