Wide-band microwave propagation parameters using circular and linear polarized antennas for indoor wireless channels

Author

Rappaport, Theodore S. ; Hawbaker, Dwayne A.

Author_Institution

Bradley Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

Volume

40

Issue

2

fYear

1992

fDate

2/1/1992 12:00:00 AM

Firstpage

240

Lastpage

245

Abstract

Results of experiments using a variety of antennas inside several buildings are presented. Path loss models for the 1.3 GHz and 4.0 GHz bands that show little difference in indoor path loss throughout the low-microwave region are discussed. Results show that line-of-sight (LOS) channels offer significantly more cross-polarization discrimination than obstructed channels. A profound result is that directional circularly polarized (CP) antennas always reduce RMS delay spread when compared to omnidirectional and directional linearly polarized (LP) antennas in LOS. The variation of RMS delay spread as a mobile moves over several wavelengths is also greatly reduced when CP antennas are used

Keywords

directive antennas; mobile antennas; mobile radio systems; radiowave propagation; telecommunication channels; 1.3 GHz; 4 GHz; RMS delay spread; SHF; UHF; circularly polarised antennas; cross-polarization discrimination; directional antennas; indoor mobile radio; indoor path loss; line of sight channels; linear polarized antennas; obstructed channels; path loss models; wideband microwave propagation; Antenna measurements; Antennas and propagation; Broadband antennas; Delay; Log periodic antennas; Loss measurement; Microwave antennas; Microwave propagation; Polarization; Time measurement;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.129185

Filename

129185