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Compact microstrip low pass filter design using U ‐shaped folded high‐impedance line
Author(s) -
Rajput Anil,
Patel Kamlesh,
Birwal Amit
Publication year - 2018
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.31245
Subject(s) - low pass filter , m derived filter , filter (signal processing) , constant k filter , microstrip , electronic engineering , high pass filter , line filter , voltage controlled filter , waveguide filter , ripple , acoustics , band stop filter , prototype filter , filter design , mechanical filter , butterworth filter , electronic filter topology , engineering , physics , electrical engineering , voltage
A microstrip low pass filter using a U‐shaped folded high impedance line is designed. Comparison with conventional filter has shown almost ripple free pass band and better stop band characteristics in the filter with folded line. Effective optimization of filter dimensions led to smoother and spurious free responses, which are desirable in the radio frequency and microwave systems. Size of overall filter is reduced by 7.5% and 9.02% for third order and fifth order filters, respectively. Both simulated and measured responses of fifth order filter are presented and found in agreement.