Improved high rejection for notch filter using square ring resonator with flexible electromagnetic coupling | Zendy

Harikrishna J. V. S. | Zendy; Karekar R. N. | Zendy; Aiyer R. C. | Zendy

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Improved high rejection for notch filter using square ring resonator with flexible electromagnetic coupling

Author(s) -

Harikrishna J. V. S.,

Karekar R. N.,

Aiyer R. C.

Publication year - 2007

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.22396

Subject(s) - resonator , microstrip , microwave , coupling (piping) , square (algebra) , band stop filter , filter (signal processing) , port (circuit theory) , flexibility (engineering) , optoelectronics , ring (chemistry) , electromagnetic radiation , electrical engineering , engineering , physics , electronic engineering , acoustics , optics , telecommunications , low pass filter , chemistry , mechanical engineering , mathematics , statistics , geometry , organic chemistry

A novel technique of electromagnetic coupling for microstrip notch filter is reported, It employs a full wave ( λ g ) square ring microstrip resonator for 2.4 GHz with one arm ( λ g /4) coupled electromagnetically to a 2‐port 50‐Ω feed line, under it. The square ring resonator and feed line are on two separate TMM4 ( ε r = 4.5) substrates. Electromagnetic coupling not only offers improved rejection but also the flexibility in various ways, for example, for easy replacement of resonator. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 1201–1203, 2007; Published online in Wiley InterScience (www.interscience.wiley.com) DOI 10.1002/mop.22396

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