Naslov
Antenna Design for 433 MHz Indoor Transmission System, Phase I

Autori
Zentner, Ervin ; Bartolić, Juraj ; Modlic, Borivoj ; Nađ, Robert

Izvornik
Fakultet elektrotehnikei računarstva, Zavod za radiokomunikacije i visokofrekvencijsku elektroniku

Vrsta, podvrsta
Ostale vrste radova, elaborat/studija

Godina
1997

Ključne riječi
Indoor propagation

Sažetak
A software for field distribution research in a room was developed. The transmitter had a fixed location and the receiver was moving along a straight line parallel to the x- or z-axis or around a circle parallel to the xy-plane of a specified radii. The distances between the walls and the antennas were sufficiently large to satisfy the far field condition. For field distribution measurements special test antennas were designed, manifactured and measured. In order to analyze the fine field struktura in a room in the frequency range 400-450 MHz, the selected distance between sucesive measuring points was 0.1l. Crosspolarization correlation research were made for all three field components. Investigated was the periodicity of the field variations in all three directions. Experiments to analize field variations caused by walking persons were made with a lot of persons randomly walking in the room.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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