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Optimising the coaxial‐fed location to enhance circular polarization bandwidth of stacked microstrip antennas
Author(s) -
Nasimuddin N.,
Esselle Karu P.,
Verma A. K.
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.22096
Subject(s) - microstrip antenna , bandwidth (computing) , microwave , coaxial , engineering , patch antenna , coaxial antenna , diagonal , circular polarization , electronic engineering , microstrip , electrical engineering , optics , physics , antenna (radio) , telecommunications , mathematics , geometry
A new technique is developed to best locate the coaxial feed of a circularly polarized stacked microstrip antenna with the objective of improving the axial‐ratio bandwidth and CP quality of the antenna. In the proposed technique, we move the single feed on an arc between the diagonal and main axis of the driven patch to optimize CP performance. An antenna, on the basis of this technique, has been designed using the Microwave Studio software, and a prototype has been fabricated and tested. The antenna measurements show an excellent 14.8% AR bandwidth, 8 dB gain (over the impedance bandwidth), and 19.5% impedance bandwidth. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 132–135, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22096