Design of Cylindrical Dielectric Resonator Antenna Array for Applications at 9 GHz
A. Sudhakar1, M. Sunil Prakash2, M. Satyanarayana3

1A.Sudhakar, Department of ECE, GMR Institute of Technology, Rajam (Andhra Pradesh), India.
2M.Sunil Prakash, Department of ECE, MVGR College of Engineering, Vizianagaram (Andhra Pradesh), India.
3M.Satyanarayana, Department of ECE, MVGR College of Engineering, Vizianagaram (Andhra Pradesh), India.
Manuscript received on 07 March 2019 | Revised Manuscript received on 20 March 2019 | Manuscript published on 30 March 2019 | PP: 947-950 | Volume-8 Issue-5, March 2019 | Retrieval Number: E2893038519/19©BEIESP
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Abstract: This paper brings out a requirement to study a coaxial probe fed cylindrical dielectric resonator antenna array (CDRAA) suggested for applications at 9 GHz with a return loss of -32.5 dB. The proposed CDRAA comprises of eight cylindrical dielectric resonators arranged in four groups. The dimension of the antenna array is 70 mm × 60 mm. The suggested CDRAA is having a power divider circuit with circular patches and keeping the cylindrical shaped dielectric resonators on those circular patches on one side of FR4 substrate. On the rear side we have conducting ground plane with coaxial connector. Material used for cylindrical dielectric resonator is Teflon of relative permittivity 2.1. The software generated results show that CDRAA has a resonant frequency of 9 GHz. Design simulation of CDRAA is done using high frequency structure simulator (HFSS), based on finite element methods (FEM). Simulated and measured S11 parameters are in good agreement. The suggested antenna shows a maximum gain of 8.77dB.
Keyword: CDRAA, FR4, Coaxial Feed, Return Loss.
Scope of the Article: RFID Network and Applications