Miniaturized CP patch antenna with low spurious radiation for GNSS applications

Author

Caizzone, Stefano ; Basta, Nikola ; Dreher, Achim

Author_Institution

Inst. of Commun. & Navig., German Aerosp. Center (DLR), Wessling, Germany

fYear

2012

fDate

8-14 July 2012

Firstpage

1

Lastpage

2

Abstract

This contribution presents investigation and development of a miniaturized antenna on a PTFE/ceramic substrate for GNSS high-performance applications. Due to the use of such a high-DK substrate, the performance of the antenna is very sensitive to variations in substrate and ground-plane dimensions. It may also severely degrade when the antenna is used in array configurations, due to the excitation of surface waves, producing spurious radiation and a high coupling between adjacent elements. A soft surface is employed to deal with this limitation, resulting in an antenna that exhibits lower coupling with adjacent elements and low sensitivity to changes of the substrate outer dimensions.

Keywords

ceramics; microstrip antenna arrays; satellite navigation; GNSS high-performance applications; PTFE-ceramic substrate; array configurations; ground-plane dimensions; high-DK substrate; low spurious radiation; miniaturized CP patch antenna; substrate outer dimensions; surface waves excitation; Antenna arrays; Arrays; Global Navigation Satellite Systems; Patch antennas; Substrates; Surface waves; Antenna coupling; Galileo; SHS; miniaturized antenna;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE

Conference_Location

Chicago, IL

ISSN

1522-3965

Print_ISBN

978-1-4673-0461-0

Type

conf

DOI

10.1109/APS.2012.6349327

Filename

6349327