Title :
Enhancement of front to back ratio and directivity with wire medium ε-Near zero metamaterial as superstrate in microstrip patch radiators
Author :
Gangwar, Deepak ; Juyal, Prateek ; Mittal, Anish ; De, Avik
Author_Institution :
Dept. of Electron. & Commun. Eng., Ambedkar Inst. of Technol., Delhi, India
Abstract :
This work presented the application of wire medium ε-near zero metamaterial as a superstrate in microstrip patch radiators. Superstrate is designed as wired array, which is having effective index of refraction smaller than unity. This proposed superstrate has been mounted on the circular Microstrip patch antenna operating in C-band frequencies. The effect of superstrate shows in directivity enhancement of 2.69 dB and front to back ratio improvement of 22.57dB over conventional patch radiator. Realistic simulation has been done using commercial EM solver Ansoft HFSS v11 and CST Microwave Studio.
Keywords :
antenna radiation patterns; metamaterials; microstrip antennas; C-band frequency; CST Microwave Studio; circular microstrip patch antenna; commercial EM solver Ansoft HFSS v11; directivity enhancement; front-to-back ratio enhancement; microstrip patch radiators; refraction index; wire medium ε-near zero metamaterial; wired array; Irrigation; Metamaterials; Microwave antennas; Microwave theory and techniques; Resonant frequency; ENZ-Metamaterials; Superstrate; Wire medium;
Conference_Titel :
Antenna Week (IAW), 2011 Indian
Conference_Location :
Kolkata
Print_ISBN :
978-1-4577-1456-6
DOI :
10.1109/IndianAW.2011.6264936
