An Efficient, Wideband, CPW-Fed Antenna Based on Simplified Composite Right/Left-Handed Transmission Line

作者：Li, Zhaozhan; Zhou, Cheng^*; Lin, Yanhong

来源：Frequenz, 2017, 71(1-2): 37-40.

DOI：10.1515/freq-2016-0062

• electrically small antenna (ESA)
• simplified composite right/left-handed transmission line (SCRLH-TL)
• wideband
• efficiency
• dual-spiral capacitor

A wideband electrically small antenna (ESA) based on simplified composite right/left-handed transmission line (SCRLH-TL) is designed, fabricated and tested. The antenna consists of two different sized SCRLH-TL unit cells with different + 1st-order mode resonance frequencies. The wideband property of antenna is achieved when these two+ 1st-order mode resonance frequency suitably merge. A dispersion analysis of the SCRLH-TL reveals that an increase in series of the dual-spiral capacitor would decrease the + 1st-order mode resonance frequency, thus reducing the electrical size of the proposed antenna. The 10 dB fractional bandwidth (FBW10dB) was 54.5% and the measured maximum was 96.2 %, with an electrical size of 0.32 lambda(0) x 0.16 lambda(0)x0.015 lambda(0) at 3.0 GHz (where.0 is the wavelength in vacuum). It is shown that the numerical results closely fit the measured results.

• 出版日期2017-1
• 单位中国人民解放军空军工程大学