1Research Scholar, Department of ECE, Andhra University College of Engineering, Visakapatnam, India
2Professor, Department of ECE, Andhra University College of Engineering, Visakapatnam, India
3Professor, Antennas and Liquid Crystals Research Centre, Department of ECE, Koneru Lakshmaiah Education Foundation, Andhra Pradesh, India
4Associate Professor, Department of ECE, Baba Institute of Technology and Sciences, Visakapatnam, India
*Corresponding author: B Siva Prasad E-mail: sbudireddi@gmail.com
Online published on 2 July, 2018.
A compact trapezoidal slotted notch band monopole antenna is designed with frequency and polarization reconfigurability. The proposed antenna is designed on FR4 substrate with permittivity 4.4 and loss tangent 0.025. Trapezoidal antenna is operating in the range of 0.9 to 3.8 GHz, which is covering GPS, GSM, PCS, UMTS, ISM, Bluetooth, LTE and Wi-Fi and medical applications. Trapezoidal antenna with slot on the radiating element is providing notch band characteristics in the range of 1.6–2.2 GHz, which is blocking GSM, PCS and UMTS application bands. Reconfigurability is attained with placement of PIN diodes in the modified trapezoidal monopole structure. Antenna can be fine-tuned between 1.5 to 3.5 GHz (Medical ISM band and wireless communication applications) with diodes switching operation and has a pattern tilt of-300 to +300. The measured results are providing good correlation with simulation results obtained from the CST microwave studio.
Frequency Reconfigurability, Notch Band, Polarization Reconfigurability, Trapezoidal Antenna
