Tri-band composite cylindrical dielectric resonator antenna with hybrid mode excitation and cross-polarization suppression

2017 ◽  
Vol 27 (8) ◽  
pp. e21130 ◽  
Author(s):  
Anand Sharma ◽  
Ravi Kumar Gangwar
Keyword(s):  
Dielectric Resonator ◽  
Cross Polarization ◽  
Dielectric Resonator Antenna ◽  
Hybrid Mode ◽  
Mode Excitation

scholarly journals A Compact Wide-Band Hybrid Dielectric Resonator Antenna with Enhanced Gain and Low Cross-Polarization

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Feibiao Dong ◽  
Limei Xu ◽  
Wenbin Lin ◽  
Tianhong Zhang
Keyword(s):  
Frequency Band ◽  
Dielectric Resonator ◽  
Return Loss ◽  
Wide Band ◽  
High Gain ◽  
Hybrid Design ◽  
Cross Polarization ◽  
Dielectric Resonator Antenna ◽  
Small Base ◽  
Air Layers

By loading two printed patches to the dielectric resonator antenna (DRA), a compact wide-band hybrid dielectric resonator antenna with enhanced gain and low cross-polarization is presented. The proposed antenna utilizes a combination of a rectangular dielectric resonator and two printed patches. Due to the hybrid design, multiple resonances were obtained. By adding two air layers between the dielectric resonator and the printed patches, the bandwidth has been significantly improved. Compared to the traditional hybrid dielectric resonator antenna, the proposed antenna can achieve wide bandwidth, high gain, low cross-polarization, and even small size simultaneously. The prototype of the proposed antenna has been fabricated and tested. The measured −10 dB return loss bandwidth is 25.6% (1.7–2.2 GHz). The measured antenna gains are about 6.3 and 8.2 dBi in the operating frequency band. Low cross-polarization levels of less than −28.5 dB and −43 dB in the E-plane and H-plane are achieved. Moreover, the overall dimensions of the antenna are only 67 × 67 × 34 (mm3). The proposed antenna is especially attractive for small base antenna applications.

scholarly journals Ultra-Wideband Dielectric Resonator Antenna Design Based on Multilayer Form

2019 ◽  
Vol 2019 ◽  
pp. 1-10
Author(s):  
Fan Wang ◽  
Chuanfang Zhang ◽  
Houjun Sun ◽  
Yu Xiao
Keyword(s):  
Dielectric Resonator ◽  
Linear Array ◽  
Ultra Wideband ◽  
Operating Frequency ◽  
Cross Polarization ◽  
Dielectric Resonator Antenna ◽  
Frequency Range ◽  
Scanning Angle ◽  
Operating Frequency Range ◽  
Relative Bandwidth

In this paper, an ultra-wideband dielectric resonator antenna (DRA) is investigated. It basically covers the bandwidth from 6 GHz to 16 GHz and achieves a relative bandwidth of 90.9%. It is found that a wide bandwidth can be reached with a small DRA by adopting multilayer form. Thus, the dimension of the designed DRA element which is composed of nine-element phased-scanning linear array is as small as 6.9mm x 8.2mm x 11 mm. While the maximum stable zenith gain is 6.2dB, the lobe width is 3 dB. The operating frequency range of the antenna array is from 5.42GHz to 16.5GHz, achieving a 101.1% relative bandwidth. A large scanning angle of ±60° is realized within the operating frequency band, with good scanning pattern and cross polarization. To verify the design and simulation, a 1 × 9 DRA array is fabricated, and measurements are carried out.

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