volume | PIER Journals

2009-03-10

A Compact Composite Broad Stop-Band Elliptic-Function Low-Pass Filter for Ultra Wide-Band Applications Using Interdigital Capacitors

Mehdi Nosrati,

Mr. Mehdi Nosrati

Islamic Azad University, Dehloran Branch

Iran

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Tayeb Faraji,

Dr. Tayeb Faraji

Kermanshah Azad University

Iran

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Zahra Atlasbaf

Dr. Zahra Atlasbaf

Tarbiat Modares University (TMU)

Iran

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Progress In Electromagnetics Research Letters, Vol. 7, 87-95, 2009

doi:10.2528/PIERL09011707

Abstract

A compact composite ultra wide-band elliptic-function low-pass filter is introduced by combining in cascade a microstrip stepped-impedance resonator using interdigital capacitor and an admittance inverter. A triple cascade low-pass filter is designed, analyzed and tested with this technique accompanied by its equivalent circuit model. This composition acts similar to composite filter with desire attenuation and matching properties in order to obtain wide bandwidth and broad stop-band. The proposed low-pass filter features the sharpness of cut off frequency, low insertion-loss, enhancement of bandwidth up to X-band frequencies and very compact size.

Citation

Mehdi Nosrati Tayeb Faraji Zahra Atlasbaf , "A Compact Composite Broad Stop-Band Elliptic-Function Low-Pass Filter for Ultra Wide-Band Applications Using Interdigital Capacitors," Progress In Electromagnetics Research Letters, Vol. 7, 87-95, 2009.
doi:10.2528/PIERL09011707
http://www.jpier.org/PIERL/pier.php?paper=09011707

References

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