Periodic spherical loop antenna

Author

O´Brien, Jonathan M. ; Weller, Thomas M. ; Grandfield, John E.

Author_Institution

Dept. of Electr. Eng., Univ. of South Florida, Tampa, FL, USA

fYear

2015

fDate

13-15 April 2015

Firstpage

1

Lastpage

4

Abstract

In this paper a volumetric approach to miniaturizing a 300 MHz loop antenna is presented. Leveraging the benefits of additive manufacturing allows for the antenna to be meandered in a spherical pattern resulting in higher levels of miniaturization while maintaining efficiency. A parametric study provides a design guideline comparing electrical size of the radian sphere (ka) with input impedance. Fabrication is achieved using a combination of additive manufacturing and traditional methods. Measured results demonstrate a ka of 0.43 with a quality factor 1.76 times the Chu limit.

Keywords

UHF antennas; loop antennas; three-dimensional printing; additive manufacturing; design guideline; electrical size; frequency 300 MHz; input impedance; miniaturization level; periodic spherical loop antenna; radian sphere; spherical pattern; Antenna measurements; Antennas; Frequency measurement; Welding; additive manufacturing; electrically small antennas; miniaturized antennas; spherical loop antenna;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless and Microwave Technology Conference (WAMICON), 2015 IEEE 16th Annual

Conference_Location

Cocoa Beach, FL

Type

conf

DOI

10.1109/WAMICON.2015.7120417

Filename

7120417