Abstract
A spherical ultra-wideband antenna is proposed based on a self-complementary structure. The antenna employs a loop comprising two symmetric teardrop-shaped arms conformally printed on a three-dimensional (3D) sphere. To enhance the impedance matching bandwidth, inductive and capacitive loadings are applied to the antenna by adding shorting strips at the antenna’s rear part and broadening the front part respectively. Measurement results show that the proposed antenna is capable of covering the frequency range of 0.8–8 GHz with a low reflection coefficient(S11) ≤ − 10 dB, gain > 2.8 dB, and radiation efficiency > 63%.
| Original language | English |
|---|---|
| Pages (from-to) | 833-838 |
| Number of pages | 6 |
| Journal | Journal of Electrical Engineering and Technology |
| Volume | 14 |
| Issue number | 2 |
| DOIs | |
| State | Published - 1 Mar 2019 |
Keywords
- Antenna
- Impedance matching
- Self- complementary Antenna
- Ultra-wideband