Title :
A Novel Dual-Band Circularly Polarized Antenna Based on Electromagnetic Band-Gap Structure
Author :
Huan Yi ; Shi-Wei Qu
Author_Institution :
Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China (UESTC), Chengdu, China
Abstract :
In this letter, a dual-band polarization-dependent electromagnetic band-gap (PDEBG) surface is designed as a reflector of a dual-band dipole antenna to realize dual-band circular polarization. Experimental and numerical results verify the concept of the low-profile dual-band circularly polarized antenna. The antenna features 10-dB return-loss bandwidths of 13.4% and 3.2% and 3-dB axial-ratio bandwidths of 2.4% and 3.5% in low and high frequency bands, respectively. The proposed antenna can present the same or different circular polarization in two bands based on different designs of the PDEBG.
Keywords :
dipole antennas; multifrequency antennas; photonic band gap; PDEBG; dual-band circular polarization; dual-band circularly polarized antenna; dual-band dipole antenna; electromagnetic band-gap structure; Antenna measurements; Antenna radiation patterns; Dipole antennas; Dual band; Metamaterials; Periodic structures; Reflection; Circularly polarized; dual-band; electromagnetic band-gap (EBG);
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2013.2281060
