Input impedance of hemispherical dielectric resonator antenna

1991 ◽  
Vol 27 (24) ◽  
pp. 2259 ◽  
Author(s):  
K.W. Leung ◽  
K.M. Luk ◽  
K.Y.A. Lai ◽  
D. Lin
Keyword(s):  
Input Impedance ◽  
Dielectric Resonator ◽  
Dielectric Resonator Antenna

scholarly journals A Compact Sequentially Rotated Circularly Polarized Dielectric Resonator Antenna Array

2021 ◽  
Vol 11 (18) ◽  
pp. 8779
Author(s):  
Yazeed Qasaymeh ◽  
Abdullah Almuhaisen ◽  
Ali Alghamdi
Keyword(s):  
Antenna Array ◽  
Input Impedance ◽  
Dielectric Resonator ◽  
Axial Ratio ◽  
Dielectric Resonator Antenna ◽  
Resonant Frequencies ◽  
Ieee 802.11A ◽  
Circularly Polarized ◽  
Quarter Wavelength

In this study, a compact 2 × 2 circularly polarized (CP) sequentially rotated (SR) dielectric resonator antenna (DRA) array operating in the IEEE 802.11a band is presented. To acquire the CP radiation, an elliptical slot (ES) was introduced to couple a rectangular dielectric resonator (RDR). The ES generates two resonant frequencies corresponding to the dominant even and odd modes. The SR feeder is made of four quarter-wavelength microstrip transformers to reduce the input impedance of the elements and, consequently, maximize the power transferred to each element. Experimental and simulation verifications were conducted on a 54 × 50 × 0.813 mm3 prototype to evaluate the performance of the proposed antenna array, which achieved a VSWR < −10 dB bandwidth of 1 GHz (5.1–6.05 GHz) and axial ratio (AR) < 3 dB of 0.95 GHz (5.1–5.85 GHz). The agreement between the simulated and measured results confirmed the validity of the proposed design.

Input impedance of aperture coupled hemispherical dielectric resonator antenna

1993 ◽  
Vol 29 (13) ◽  
pp. 1165 ◽  
Author(s):  
K.W. Leung ◽  
K.Y.A. Lai ◽  
K.M. Luk ◽  
D. Lin
Keyword(s):  
Input Impedance ◽  
Dielectric Resonator ◽  
Dielectric Resonator Antenna
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