Compact dual-band ring dielectric resonator antenna with moon-shaped defected ground structure for WiMAX/WLAN applications

2016 ◽  
Vol 26 (6) ◽  
pp. 503-511 ◽  
Author(s):  
Anand Sharma ◽  
Ravi Kumar Gangwar
Keyword(s):  
Dielectric Resonator ◽  
Dual Band ◽  
Dielectric Resonator Antenna ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Band Ring

scholarly journals Dual Band Notch, Compact, Low profile, Hybrid Ultra Wideband RDRA

2020 ◽  
Vol 10 (1) ◽  
pp. 166-169
Keyword(s):  
Radiation Pattern ◽  
Dielectric Resonator ◽  
Surface Current ◽  
Wide Band ◽  
Ultra Wideband ◽  
Dual Band ◽  
Ultra Wide Band ◽  
Impedance Bandwidth ◽  
Dielectric Resonator Antenna ◽  
Ground Structure

This paper presents a novel, compact Ultra Wide Band , Asymmetric Ring Rectangular Dielectric Resonator Antenna (ARRDRA), which is a unique combination of Thin Dielectric Resonator (DR), Fork shape patch and defective ground structure. The base of the proposed antenna is its Hybrid structure, which generates fundamental TM, TE and higher order modes that yields an impedance bandwidth of 119%. Proposed antenna provides a frequency range from 4.2 to 16.6 GHz with a stable radiation pattern and low cross polarization levels. Peak gain of 5.5 dB and average efficiency of 90% is obtained by the design. Antenna is elongated on a FR4 substrate of dimension 20 x 24x 2.168 mm3 and is particularly suitable for C band INSAT, Radio Altimeter, WLAN, Wi-Fi for high frequencies. Ease in fabrication due to simplicity, compactness, stable radiation pattern throughout the entire bandwidth are the key features of the presented design. Inclusion of Defective ground structure and asymmetric ring not only increases the bandwidth but also stabilize the gain and efficiency due to less surface current. Presented design launch an Ultra Wide Band antenna with sufficient band rejection at 4.48-5.34 and 5.64-8.33 GHz with stable radiation pattern and high gain.

DUAL BAND RECTANGULAR DIELECTRIC RESONATOR ANTENNA FOR WLAN APPLICATION

2016 ◽  
Vol 78 (6-2) ◽  
Author(s):  
Raghuraman Selvaraju ◽  
M. R. Kamarudin ◽  
Mohsen Khalily ◽  
Jamal Nasir ◽  
M. H. Jamaluddin.
Keyword(s):  
Dielectric Resonator ◽  
Dual Band ◽  
Impedance Bandwidth ◽  
Strip Line ◽  
Dielectric Resonator Antenna ◽  
Ring Shape ◽  
Measured Impedance ◽  
Band Ring ◽  
5 Ghz ◽  
Rectangular Dielectric Resonator Antenna

A compact dual band ring shape rectangular dielectric resonator antenna (RRDRA) to operate at 2.4 GHz and 5 GHZ WLAN application is proposed. In this design the dielectric resonator is fed by modified 50Ω trapezoidal micro strip line situated on top of the FR4 substrate. The simulated and measured impedance bandwidth achieved at 2.4 GHZ is 12.42% (2.3149-2.6132) and 12.9% (2.21-2.52) respectively; whilst for 5 GHZ at 13% (5.1795-5.8914) and 13.2% (5.08-5.81) for S11<-10 dB. And the gain of the proposed antenna is 4.9dBi and 5.9 dBi at 2.4 GHz 5GHZ respectively. Results are simulated using Ansoft High frequency structural simulator (HFSS) for the study of impedance bandwidth, return loss, radiation pattern and antenna gain. Furthermore the antenna has been fabricated and tested. The measured characteristics of the proposed antenna are in good agreement with the simulated results. 

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