What is it about?
Bandstop filter (BSF) is first constructed using open stubs and spurline. The stop bandwidth of this conventional structure is further increased by placing a complementary split ring resonator (CSRR) exactly below the 50 Ω microstrip line. By embedding this BSF with a wide rejection band in the input port of the PCML bandpass filter, unwanted passbands of bandpass filter is eliminated.
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Why is it important?
Out of the band filter performance for parallel coupled microstrip filter is greatly enhanced by using the above mentioned bandstop filter
Perspectives
harmonic rejection upto five times the fundamental frequency with more than 20 dB rejection level is reported
Rakhesh Singh Kshetrimayum
Indian Institute of Technology Guwahati
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This page is a summary of: HARMONIC SUPPRESSION OF PARALLEL COUPLED MICROSTRIP LINE BANDPASS FILTER USING CSRR, Progress In Electromagnetics Research Letters, January 2009, EMW Publishing,
DOI: 10.2528/pierl08122602.
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