A Novel UWB Monopole Antenna With Tunable Notched Behavior Using Varactor Diode

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, tuna...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2014, Vol.13, p.1243-1246
Main Author: Aghdam, Sajjad Abazari
Format: Article
Language:English
Subjects:
Antenna measurements
Antennas
Band rejection
Capacitance
Monopole antennas
Notches
Patch antennas
Slot antennas
Ultra wideband antennas
Ultrawideband
ultrawideband (UWB) antenna
varactor diode
Varactor diodes
Varactors
variable band
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Summary: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.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2014.2332449