RETRACTED: Novel method for skirt response improvement of open-stub low-pass filter

Autor: Wei-Ting Liu, Jan-Dong Tseng
Rok vydání: 2007
Předmět:
Zdroj: Microwave and Optical Technology Letters. 49:2434-2438
ISSN: 0895-2477
DOI: 10.1002/mop.22764
Popis: A direct circuit replacement method using interdigital low-pass structure directly replaced all open stubs of odd-order open-stub low-pass filter to achieve sharp skirt response. The characteristics of the interdigital structure are analyzed by lumped element equivalent circuits and investigated by full-wave electromagnetic simulator, IE3D. These simulated results were then applied as a guideline for the replacement. Two open-stub low-pass filters were designed by this method to enhance the skirt response near 3-dB cutoff frequency. The measured results show very good improvement on skirt response and the rejection level in stop band. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2434–2438, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22764
Databáze: OpenAIRE