Diversity antenna studies at 2.3 GHz for automotive applications, and MEMS-based antenna diversity switching circuit

Author

Song, H.J. ; Sievenpiper, D. ; Hsu, H.P. ; Tangonan, G. ; Pikulski, J. ; Ontiveros, S.

Author_Institution

LLC, HRL Labs., Malibu, CA, USA

Volume

2

fYear

2002

fDate

2002

Firstpage

1096

Abstract

In this paper, we present work on diversity antenna experiments in the 2.3 GHz band, specifically for applications in the automotive environment. We describe the case of. two-element position diversity, and we study the effects of the antenna positions on the amount of diversity gain. The presentation consists primarily of measurement data on a moving vehicle, with software postprocessing to determine the effects of diversity combining. We present several diversity combining schemes, and describe hardware that we have built to address one of these schemes. Finally, we make several conclusions regarding the optimum geometry for antenna diversity in an automotive environment.

Keywords

UHF antennas; antenna arrays; automobiles; diversity reception; land mobile radio; micromechanical devices; mobile agents; multipath channels; switching circuits; 2.3 GHz; MEMS-based antenna diversity switching circuit; antenna positions; automotive applications; diversity antenna; diversity combining; diversity gain; moving vehicle; optimum geometry; software postprocessing; two-element position diversity; Antenna measurements; Application software; Automotive applications; Automotive engineering; Diversity methods; Diversity reception; Hardware; Software measurement; Switching circuits; Vehicles;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2002. Proceedings. VTC 2002-Fall. 2002 IEEE 56th

ISSN

1090-3038

Print_ISBN

0-7803-7467-3

Type

conf

DOI

10.1109/VETECF.2002.1040773

Filename

1040773