Abstract
A very low-profile conical antenna with a simple structure and wideband characteristic is proposed in this article. The antenna structure consists of a monoconical conducting body, a parasitic ring shorted to a finite-sized ground plate to achieve low-profile characteristic (Nakano et al., IEEE Trans Antennas Propag 56 (2008) 1187-1192), and a sleeve attached to the ground for yielding an extreme wide VSWR bandwidth. The experimental result shows that the proposed antenna, with a height of only 0.0625 wavelength at the lower edge frequency of the bandwidth, exhibits a 7.9:1 impedance bandwidth from 747 to 5900 MHz with VSWR below 2.5.
Original language | English |
---|---|
Pages (from-to) | 2620-2623 |
Number of pages | 4 |
Journal | Microwave and Optical Technology Letters |
Volume | 51 |
Issue number | 11 |
DOIs | |
State | Published - Nov 2009 |
Externally published | Yes |
Keywords
- Broadband
- Conical antenna
- Low profile
- Parasitic ring