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A comparison of the performance of different tapers in continuous microstrip electromagnetic crystals
Author(s) -
Erro M. J.,
Laso M. A. G.,
Lopetegi T.,
Garde M. J.,
Benito D.,
Sorolla M.
Publication year - 2002
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.10663
Subject(s) - stopband , microwave , bandwidth (computing) , microstrip , ground plane , optics , materials science , amplitude , acoustics , physics , engineering , electrical engineering , telecommunications , band pass filter , antenna (radio)
The influence of the window shape in the frequency response of electromagnetic crystals (ECs), made by etching a sinusoidal continuous pattern of constant period and variable amplitude on the ground plane of a microstrip line, is studied in terms of rejection level, bandwidth, side‐lobe level, and stopband abruptness. A new parameter, the equivalent number of periods, is found to be a good estimate of the increase in length needed to maintain the rejection level and bandwidth of the uniform structure, while reducing the secondary lobes by applying a window. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 36: 37–40, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10663