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Frequency agile active microstrip antenna
Author(s) -
Gautam A. K.,
Vishvakarma B. R.
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.22174
Subject(s) - microstrip antenna , patch antenna , engineering , antenna (radio) , microwave , electrical engineering , electronic engineering , microstrip , acoustics , radiator (engine cooling) , antenna measurement , physics , telecommunications , mechanical engineering
A new technique for designing the frequency agile microstrip antenna is presented. The frequency agility is achieved by symmetrical loading of two identical MOS capacitors at the radiating edge of the patch, in which the operating frequency of the rectangular microstrip antenna is electronically controlled by the bias voltage of MOS capacitors. Theoretical model for the antenna is developed using modal cavity model approach and results are also simulated with MOM based simulator. The tuning range is found to be 1.527 GHz (61.09%), which is much better than earlier reported data and the unloaded patch radiator. Antenna shows consistent return loss and radiation pattern for the entire tunable frequency range. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 431–434, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22174