Title :
A Novel UWB Monopole Antenna With Tunable Notched Behavior Using Varactor Diode
Author :
Aghdam, Sajjad Abazari
Author_Institution :
Dept. of Comput. & Electr. Eng. & Comput. Sci., Florida Atlantic Univ., BocaRaton, FL, USA
Abstract :
This letter presents a novel ultrawideband (UWB) antenna with tunable notched band. The antenna is assembled on an FR4 substrate with thickness of 0.8 mm and εr = 4.4. By inserting a π-shaped slot on the radiating patch, band-notch function is achieved. By loading the slot with lumped varactor, tunability of the created notch would be possible. Based on this technique, an electronically controlled notched-band antenna is designed and fabricated including a single varactor diode with a varying capacitance value of 0.63-2.67 pF. Using the cited varactor, notched band tunability of 2.7-7.2 GHz is obtained.
Keywords :
UHF antennas; antenna radiation patterns; microstrip antennas; monopole antennas; slot antennas; ultra wideband antennas; varactors; π-shaped slot; FR4 substrate; capacitance 0.63 pF to 2.67 pF; electronically controlled notched-band antenna; frequency 2.7 GHz to 7.2 GHz; lumped varactor; novel UWB monopole antenna; radiation patch; size 0.8 mm; tunable notched band behavior; ultrawideband antenna; varactor diode; varying capacitance; Antenna measurements; Slot antennas; Ultra wideband antennas; Varactors; Band rejection; ultrawideband (UWB) antenna; varactor diode; variable band;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2332449
