Abstract
This article presents a center-feed parasitic circular patch antenna with continuously tuning linear polarization performance. Eutectic gallium-indium liquid metal alloy is employed to tune the angle of linear polarization continuously. The antenna is feed at the center of a circular patch with a ring slot. The rotational symmetry of the antenna helps maintain the impedance and radiation pattern at different polarization angles. The liquid metal is contained in a 1 × 1 mm channel etched in a polymethyl methacrylate cylinder. The polarization angle is tuned by controlling the location of a short bar of EGaln. The center resonant frequency of the demonstrated antenna is 5.19 GHz with a −10 dB impedance bandwidth of 0.24 GHz.
| Original language | English |
|---|---|
| Pages (from-to) | 727-733 |
| Number of pages | 7 |
| Journal | Microwave and Optical Technology Letters |
| Volume | 61 |
| Issue number | 3 |
| Early online date | 6 Dec 2018 |
| DOIs | |
| Publication status | Published - 1 Mar 2019 |
Keywords
- liquid metal
- parasitic circular patch antenna
- reconfigurable linear polarization
- ring slot
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering