Frequency Agile Annular Ring Microstrip Antenna Loaded with MOS Capacitor
Authors: Kanaujia, B.K.1; Singh, A.K.2; Vishvakarma, B.R.3
Source: Journal of Electromagnetic Waves and Applications, Volume 22, Number 10, 2008 , pp. 1361-1370(10)
Publisher: VSP, an imprint of Brill
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Abstract:
A new techniques for designing the frequency agile annular ring microstrip antenna (ARMSA) is presented. The frequency agility is achieved by loading the MOS capacitor on annular ring microstrip antenna. Instead of controlling the resonance frequency by changing the radii of annular ring microstrip antenna, it is also possible by means of changing the gate bias voltage of MOS capacitor without altering the radii of annular ring microstrip antenna. The investigations based on cavity model are carried out for the various thickness of oxide (Si3N4) layer from 100 Å to 400 Å. It is found that the maximum frequency agility 51.56% (1.65 GHz) is obtained for 100 Å and minimum frequency agility 30.31% (0.97 GHz) is obtained for 400 Å.Document Type: Research article
DOI: 10.1163/156939308786348910
Affiliations: 1: Department of Electronics and Communication Engineering, Faculty of Engineering and Technology, M. J. P. Rohilkhand University, Bareilly 243006, India 2: Department of Electronics and Instrumentation and Engineering, Faculty of Engineering and Technology, M. J. P. Rohilkhand University, Bareilly 243006, India 3: Department of Electronics Engineering, Institute of Technology, B. H. U., Varanasi, 221005, India
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