Title :
Gain enhancement using DOE lens and DNG lens
Author :
Torbitt, Christopher ; Venkataraman, Jayanti ; Zhaolin Lu
Author_Institution :
Dept. of Electr. & Microelectron. Eng., Rochester Inst. of Technol. (RIT), Rochester, NY, USA
Abstract :
The present work investigates the feasibility of enhancing gain using two types of lenses. One is the Diffractive Optical Element (DOE) lens made of polystyrene, designed for 3 GHz. The second one is a dielectric double negative (DNG) lens [2] created by a triangular lattice of holes drilled in a high dielectric permittivity material to obtain a refractive index of -1 at 3 GHz. For both lenses beam focusing has been illustrated. Each of the lenses is placed in front of a radiating antenna, a slotted waveguide, and modeled in HFSS and CST. The results for beam focusing are very encouraging and work is in progress to show gain enhancement. Both types of lenses can be easily constructed and experimental measurements will be done to validate simulation results.
Keywords :
diffractive optical elements; lenses; optical focusing; optical polymers; optical waveguides; refractive index; DNG lens; DOE lens; beam focusing; dielectric double negative lens; diffractive optical element; frequency 3 GHz; gain enhancement; high dielectric permittivity material; polystyrene; radiating antenna; refractive index; slotted waveguide; triangular lattice; types of lenses; Antenna radiation patterns; Dielectrics; Lenses; Materials; Microstrip; Microstrip antenna arrays; Optical diffraction;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2013 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4673-5315-1
DOI :
10.1109/APS.2013.6711434
