Title :
Gain enhancement for wide bandwidth endfire antenna with I-shaped resonator (ISR) structures
Author :
Sun, Y.H. ; Wen, G.J. ; Jin, H.Y. ; Wang, Peng ; Huang, Y.J.
Author_Institution :
Centre for RFIC & Syst. Technol., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A broadband gain enhancement endfire antenna is presented. The gain enhancement is achieved by loading with an I-shaped resonator (ISR) structure in the endfire direction. Broad bandwidth is realised by using a microstrip-to-coplanar balun and bowtie dipole elements, while gain enhancement is achieved by loading the ISR structure in the endfire direction. The measurements show that the ISR-loaded antenna presents a gain of about 4-8 dB in the whole working band (4.5-9.5 GHz), which is about 2 dB more than the unloaded one. The advantages of broad bandwidth and high gain make this antenna valuable in wireless communication systems.
Keywords :
baluns; bow-tie antennas; broadband antennas; dipole antenna arrays; microstrip antenna arrays; microwave resonators; I-shaped resonator structures; ISR-loaded antenna; bandwidth 4.5 GHz to 9.5 GHz; bowtie dipole element; broadband antenna; endfire direction; microstrip-to-coplanar balun; wide bandwidth endfire antenna Gain enhancement; wireless communication systems;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2013.1198
