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Record Details

Record 96 of 2711
Fade Measurements into Buildings from 500 to 3000 MHz
Offline Availability: Go to Request Form
Author and Affiliation:
Vogel, Wolfhard J.(Texas Univ., Electrical Engineering Research Lab., Austin, TX United States)
Torrence, Geoffrey W.(Texas Univ., Electrical Engineering Research Lab., Austin, TX United States)
Abstract: Slant-path fade measurements from 500 to 3000 MHz were made into six different buildings employing a vector network analyzer, a tower-mounted transmitting antenna and an automatically positioned receiving antenna. The objective of the measurements was to provide information for satellite audio broadcasting and personal communications satellite design on the correlation of fading inside buildings. Fades were measured with 5 cm spatial separation and every 0.2 percent of the frequency. Median fades ranged from 10 to 20 dB in woodframe houses with metal roofs and walls without and with an aluminum heat shield, respectively. The median decorrelation distance was from 0.5 to 1.1. m and was independent of frequency. The attenuation into the buildings increased only moderately with frequency in most of the buildings with a median slope of about 1 to 3 db/GHz, but increased fastest in the least attenuating building with a slope of 5 dB/GHz. The median decorrelation bandwidth ranged from 1.2 to 3.8 percent of frequency in five of the buildings, and was largest in the least attenuating building, with 20.2 percent of frequency.
Publication Date: Sep 01, 1996
Document ID:
19970004358
(Acquired Jan 30, 1997)
Accession Number: 97N12567
Subject Category: COMMUNICATIONS AND RADAR
Document Type: Conference Paper
Publication Information: Proceedings of the Twentieth NASA Propagation Experimenters Meeting (NAPEX 20) and the Advanced Communications Technology Satellite (ACTS) Propagation Studies Miniworkshop; 303-307; (JPL-Publ-96-20); (SEE 19970004346)
Financial Sponsor: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA United States
Organization Source: Texas Univ.; Electrical Engineering Research Lab.; Austin, TX United States
Description: 6p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: COMMUNICATION SATELLITES; ATTENUATION COEFFICIENTS; BUILDINGS; SIGNAL FADING; OMNIDIRECTIONAL ANTENNAS; RECEPTION DIVERSITY; WAVE PROPAGATION; BROADCASTING; ROOFS
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