A High Gain and Directivity Bow Tie Antenna Based on Single-Negative Metamaterial
- Resource Type
- article
- Authors
- Liu, Li; Zhang, Chengguang; Liu, Yu; Hua, Yujin
- Source
- Journal of Microwaves, Optoelectronics and Electromagnetic Applications. June 2018 17(2)
- Subject
- Metamaterial-based antenna
negative permittivity
negative permeability
gain enhancement
- Language
- English
- ISSN
- 2179-1074
This paper presents an antenna loaded with metamaterial to enhance its gain and directivity to improve the performance of a ground-penetrating radar system (GPR). We adjusted the parameters of the antenna to change its equivalent capacitance and inductance and applied an operating frequency of 0.5 GHz-1.2 GHz to create an ultra-wideband antenna. On the basis of this operating frequency, we also designed the corresponding negative permittivity and permeability materials to simulate a patch antenna and material in a 1 GHz frequency band. The high gain and directivity of the antenna loaded with single-negative material were verified by simulation. Compared to the original antenna, the maximum gain increased by 7 dB and its directivity was greatly improved.