DocumentCode :
3595503
Title :
Dual reconfigurable antenna using capacitive coupling slot and parasitic square ring
Author :
Abou Al-alaa, M. ; Elsadek, H.A. ; Abdallah, E.A.
Author_Institution :
Electron. Res. Inst., Dokki, Egypt
fYear :
2014
Firstpage :
1918
Lastpage :
1920
Abstract :
A square patch antenna with both frequency and polarization reconfigurability is presented. The antenna consists of a square patch with coplanar feed on the ground plane. On the patch side, there is a parasitic square ring that responsible for changing the antenna polarization. On the ground plane, there is a rectangular slot by changing of length of this slot the antenna resonance frequency can be changed. The antenna operates at 1.57 and 2.45 GHz that used in GPS and Bluetooth applications, respectively. The length of the slot length in the proposed antenna is 40 mm, then the antenna operates at the lower frequency (1.57 GHz). By using switches in the ground plane the slot length can be adjust to 24 mm so the antenna operates at upper frequency (2.45 GHz). Two switches are mounted on the parasitic ring at optimized positions. By switching between the different states of these two switches, the proposed antenna operates with linear polarization (LP) and circular polarization (CP) at each operating frequency. The antenna gain at 1.57 and 2.45 GHz are 5.9 and 7.64 dBi respectively. The antenna is analyzed using the CST Microwave Studio. The proposed antenna was fabricated and measured. Results comparison shows good agreement.
Keywords :
UHF antennas; antenna feeds; coplanar waveguide components; electromagnetic coupling; electromagnetic wave polarisation; linear antennas; microstrip antennas; slot antennas; Bluetooth applications; CP; GPS applications; LP; capacitive coupling slot; circular polarization; coplanar feed; dual reconfigurable antenna; frequency 1.57 GHz to 2.45 GHz; ground plane; linear polarization; parasitic square ring; rectangular slot; square patch antenna; Antenna radiation patterns; Couplings; Polarization; Resonant frequency; Slot antennas; Microstrip patch antenna; circular polarization; frequency reconfigurability; linear polarization; parasitic square ring; polarization reconfigurability; reconfigurable antenna;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Personal, Indoor, and Mobile Radio Communication (PIMRC), 2014 IEEE 25th Annual International Symposium on
Type :
conf
DOI :
10.1109/PIMRC.2014.7136484
Filename :
7136484
Link To Document :
بازگشت