Computation and optimization of resonant frequency and input impedance of a coax-fed circular patch microstrip antenna

GÜREL Ç. S., Aydin E., Yazgan E.

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, cilt.49, sa.9, ss.2263-2267, 2007 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 49 Sayı: 9
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1002/mop.22675
  • Dergi Adı: MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2263-2267
  • Anahtar Kelimeler: microstrip antenna, resonant frequency, input impedance, circular patch, AIR GAPS, DESIGN
  • TED Üniversitesi Adresli: Hayır

Özet

Microstrip antennas are important elements of today's wireless communication networks. In their various applications, it is critical to provide wide hand operation around the resonant frequency providing good impedance match between the antenna element and the feed. In this study, new, simple, arid accurate computation of resonant frequency and input impedance of double-layered, coaxial fed circular disk microstrip antenna with air gap is performed. In the analysis, new effective radius and permittivity expressions are used in simple and modified form including modal effects. Then, a new approach is proposed to provide input impedance matching (it resonant frequency via the application of microgenetic algorithm for wide hand operation. The accuracy of theoretical calculations and impedance matching approach are presented for various,structural parameters and operational modes of the antenna. (C) 2007 Wiley Periodicals, Inc.