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The equiangular spiral antenna at low frequencies
Author(s) -
McFadden Michael,
Scott Waymond R.
Publication year - 2009
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.24092
Subject(s) - cutoff , logarithmic spiral , spiral antenna , cutoff frequency , spiral (railway) , equiangular polygon , microwave , antenna (radio) , finite difference time domain method , physics , optics , mathematics , engineering , geometry , electrical engineering , mathematical analysis , telecommunications , dipole antenna , coaxial antenna , quantum mechanics , monotone polygon
The effect of the geometry of the equiangular spiral antenna on the lower cutoff frequency of operation is studied using the finite‐difference time‐domain method. Graphs are provided that allow calculation of the cutoff frequency from the desired performance and geometry. Additionally, the patterns of the antennas at cutoff are shown. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 536–540, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24092