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Polarization Diversity Antennas
(Radio Systems Lab)ORCID iD: 0000-0002-3015-4495
1997 (English)In: Antenn 97: Nordiskt antennsymposium, 1997, p. 59-65Conference paper, Published paper (Refereed)
Abstract [en]

In this study we investigate how different types of  base station antenna polarization configurations, horizontal/vertical and slanted ±45 degrees, affect the diversity performance in different environments at 1800 MHz. The performance is determined by measurements where  envelope cross-correlation, mean signal levels and diversity gain are studied in urban and suburban small-cell environments. The results are compared with a two branch space diversity scheme, where the antennas are horizontally separated by 20l. The correlation values are in general low, less than 0.7 for more than 90% of the measurements. The horizontal/vertical system suffers though from differences in mean branch signal levels, compared to the ± 45° and space diversity system which always have comparable mean signal levels. The diversity gain of both dual polarized antenna systems are in general about 1dB less than the gain of spatial diversity. The ± 45° scheme performs also about 1dB better than the horizontal/vertical scheme in the urban area. The results indicates that the  ± 45° dual polarized scheme can be attractive in situations where hand-held portables are dimensioning for the cell planning.

Place, publisher, year, edition, pages
1997. p. 59-65
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Physics
Identifiers
URN: urn:nbn:se:kth:diva-239871OAI: oai:DiVA.org:kth-239871DiVA, id: diva2:1267628
Conference
Nordiskt antennsymposium i Göteborg 27-29 maj 1997
Note

QCR 20181204

Available from: 2018-12-03 Created: 2018-12-03 Last updated: 2018-12-04Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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