Title :
Directive metamaterial antenna using high impedance surface
Author :
Li, Hongqiang ; Qin, Yaqin ; Wei, Zeyong ; Chen, Hong ; Zhang, Yewen ; Zhou, Lei ; Chan, Ce Ting
Author_Institution :
Dept. of Phys., Tongji Univ., Shanghai, China
Abstract :
λ/2 is the minimum length along the propagating direction to support a cavity mode. Here we show experimentally that metamaterial cavity formed by a high impedance surface (HIS) and an electrically responded surface can make a dipole highly directive. 3dB angular width is less than 30°. Thickness of the cavity is much less than λ/4 at working wavelength with return loss up to -40dB. This study is of great potential in realizing subwavelength antenna with high directivity in the future.
Keywords :
antenna radiation patterns; directive antennas; metamaterials; surface impedance; cavity mode; directive metamaterial antenna; electrically responded surface; high impedance surface; metamaterial cavity; propagating direction; subwavelength antenna; Dielectric materials; Directive antennas; Frequency; Lattices; Magnetic materials; Magnetic resonance; Metamaterials; Optical scattering; Optical surface waves; Surface impedance;
Conference_Titel :
Microwave and Millimeter Wave Technology, 2004. ICMMT 4th International Conference on, Proceedings
Print_ISBN :
0-7803-8401-6
DOI :
10.1109/ICMMT.2004.1411571
