Design and analysis of Dual segments two element array antenna for wideband applications

Author

Ain, Mohd Fadzil Bin ; Ullah, Ubaid ; Sulaiman, Ahmad Asari ; Othman, Mohamad Arif ; Qasaymeh, Y.M. ; Ahmad, Zainal Arifin ; Hutagalung, Sabar Oerita

Author_Institution

Sch. of Electr. & Electron. Eng., Univ. Sains Malaysia, Nibong Tebal, Malaysia

fYear

2011

fDate

12-14 Dec. 2011

Firstpage

398

Lastpage

402

Abstract

A Broadband Dual-segment two element array mount up with reflector, operates at center frequency of 7.5 GHz is reported. Each Dielectric Resonator (DR) comprises of two DR´s with diverse permittivities stacked in concert. The bottom segment is of Barium Zinc Tantalum (BZT) with reasonably high dielectric constant and serves as impedance transformer; while the top segment is of RogersRT6010 of low permittivity and serves as resonator. These DR´s are excited by executing T-Junction equal power divider (50Ω - 100 Ω). This arrangement reveals a wide impedance bandwidth of 21% for simulation while 24% for measured. Also a realistic enhance of 2 - 2.5 dB in the gain and directivity of the antenna has been witnessed by optimizing reflector size and location in the near field region of antenna. Analysis of the antenna is performed by implying CST 2008 and fabricated on Rogers 4003C with ε_s= 3.38. Reasonable agreement between simulated and experimental results was observed.

Keywords

dielectric resonators; microwave antenna arrays; microwave resonators; permittivity; power dividers; CST 2008; DR; RogersRT6010; T-Junction equal power divider; antenna near field region; barium zinc tantalum; broadband dual-segment two element array antenna; dielectric constant; dielectric resonator; frequency 7.5 GHz; gain 2 dB to 2.5 dB; impedance transformer; resistance 50 ohm to 100 ohm; Antennas; Approximation methods; Dielectrics; Gain; Monitoring; Resonant frequency; Wideband; Antenna Array; Dielectric Resonator Antenna; Dual segments; Reflector; Two element array;

fLanguage

English

Publisher

ieee

Conference_Titel

RF and Microwave Conference (RFM), 2011 IEEE International

Conference_Location

Seremban, Negeri Sembilan

Print_ISBN

978-1-4577-1628-7

Type

conf

DOI

10.1109/RFM.2011.6168776

Filename

6168776