VHF/ UHF Building Penetration Characteristics When Using Low Antenna Heights

Author

Turney, William ; Karam, Margot ; Malek, Laddie ; Buchwald, Greg

Author_Institution

Motorola Labs, Algonquin

fYear

2007

fDate

17-20 April 2007

Firstpage

664

Lastpage

675

Abstract

Measurements and propagation models for building penetration are shown for a VHF/ UHF system that uses low antenna height (<3 meters). Measurements show that excess building loss, even when line-of-sight conditions exist, can easily exceed 30 dB. Additionally, variations of the channel frequency response in excess of 20 dB were observed over a 5 MHz bandwidth. Also, paths with maximum excess delays (25 dB) up to 5.2 mu seconds were observed. These factors as well as others presented in detail in this document will have a significant impact on the air interface specification for the cognitive radio in- building communication system.

Keywords

UHF antennas; UHF measurement; VHF antennas; cognitive radio; radiowave propagation; VHF/UHF building penetration characteristic; air interface specification; channel frequency response; cognitive radio; line-of-sight condition; low antenna height; propagation model; Antenna measurements; Antennas and propagation; Bandwidth; Cognitive radio; Delay; Frequency response; Loss measurement; UHF antennas; UHF measurements; UHF propagation;

fLanguage

English

Publisher

ieee

Conference_Titel

New Frontiers in Dynamic Spectrum Access Networks, 2007. DySPAN 2007. 2nd IEEE International Symposium on

Conference_Location

Dublin

Print_ISBN

1-4244-0663-3

Type

conf

DOI

10.1109/DYSPAN.2007.89

Filename

4221551