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

Volume

11

fYear

2012

fDate

7/4/1905 12:00:00 AM

Firstpage

1402

Lastpage

1405

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;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2012.2226862

Filename

6341790