Title :
Design of a Planar Segmented Circular Loop Antenna for Omnidirectional Radiation at 5.8 GHz
Author :
Hasse, Roger D. ; Hunsicker, Walker ; Naishadham, Krishna ; Elsherbeni, Atef Z. ; Kajfez, Darko
Author_Institution :
Georgia Tech Res. Inst., Georgia Inst. of Technol., Atlanta, GA, USA
fDate :
7/4/1905 12:00:00 AM
Abstract :
A planar segmented circular loop antenna is designed for operation at 5.8 GHz with omnidirectional radiation pattern. This novel printed antenna, fabricated on a low-loss substrate, is composed of alternating top- and bottom-layer conducting segments of annular geometry, with the regions of conductor overlap functioning as planar capacitors to minimize phase variation in the electrical current. Measurements reveal an omnidirectional pattern with gain of 1.58 dBi, efficiency of 81%, bandwidth of 6%, and input impedance close to 50 Ω. The antenna is proposed as a transceiver for applications that use the 5.8-GHz ISM band.
Keywords :
antenna radiation patterns; capacitors; geometry; loop antennas; microstrip antennas; microwave antennas; omnidirectional antennas; planar antennas; alternating top-layer conducting segment; annular geometry; bottom-layer conducting segment; conductor overlap functioning region; efficiency 81 percent; electrical current; frequency 5.8 GHz; low-loss substrate; omnidirectional radiation pattern; phase variation minimization; planar capacitor; planar segmented circular loop antenna; printed antenna; resistance 50 ohm; Antenna measurements; Antenna radiation patterns; Capacitors; Current measurement; Wires; Multilayered antenna; omnidirectional radiation pattern; planar capacitors; segmented loop antenna;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2012.2226862
