摘要
In this communication, a compact, wideband, low-profile, and high gain dipole antenna is proposed. A microstrip coupling line is used to feed the ellipse pairs, which is two arms of the antenna. This simple feeding structure can significantly enhance the impedance bandwidth (IBW). A cavity-backed structure is adopted to achieve the low-profile antenna. With the influence of the cavity-backed structure, the new antenna has a higher gain over the whole frequency band. An optimized antenna with a height of only 0.17 λ (where λ is the free space wavelength at the lowest frequency) is designed and measured. The measured result shows that the IBW for VSWR < 2 is 117% (2.48-9.51 GHz). Further, the gain bandwidth (Gain > 6 dBi) from 2.57 to 8.73 GHz is more than 108.9%. The antenna radiation pattern performs well over the whole band, and the peak gain can reach 11.8 dBi.
| 源语言 | 英语 |
|---|---|
| 文章编号 | 7636967 |
| 页（从-至） | 5465-5469 |
| 页数 | 5 |
| 期刊 | IEEE Transactions on Antennas and Propagation |
| 卷 | 64 |
| 期 | 12 |
| DOI | |
| 出版状态 | 已出版 - 12月 2016 |