Directive dual-band CP shorted ring-slot antenna

Author

Heikkinen, Jouko J. ; Kivikoski, Markku A.

Author_Institution

Dept. of Electron., Tampere Univ. of Technol., Tampere

fYear

2008

fDate

5-11 July 2008

Firstpage

1

Lastpage

4

Abstract

In order to maximize the power captured from incident wave a directive antenna is required. As an example, high directivity is desired for rectifying antenna (rectenna) operating at low power densities, because the rectifier efficiency decreases at lower input power levels. Ring-slot antennas-being attractive for their simplicity and ease of integration, among others-are, however, bidirectional by their nature. Unidirectional radiation pattern can be achieved e.g. by reflector- or cavity-backing. In this paper, improved broadside CP performance of a microstrip-fed dual-band circularly polarized shorted ring-slot antenna is demonstrated when a single reflector is added to the structure.

Keywords

antenna feeds; antenna radiation patterns; directive antennas; microstrip antennas; multifrequency antennas; polarisation; rectennas; reflector antennas; slot antennas; directive dual-band CP shorted ring-slot antenna; incident wave; microstrip-fed circularly polarized antenna; rectifying antenna; single reflector; unidirectional radiation pattern; Antenna feeds; Antenna measurements; Directive antennas; Dual band; Frequency; Gain measurement; Microstrip antennas; Reflection; Reflector antennas; Slot antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE

Conference_Location

San Diego, CA

Print_ISBN

978-1-4244-2041-4

Electronic_ISBN

978-1-4244-2042-1

Type

conf

DOI

10.1109/APS.2008.4618982

Filename

4618982