Excess Attenuation Caused by Antenna Wetting of Terrestrial Microwave Links at 32 GHz

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F19%3A00332537" target="_blank" >RIV/68407700:21110/19:00332537 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21230/19:00332537

Výsledek na webu

<a href="https://doi.org/10.1109/LAWP.2019.2925455" target="_blank" >https://doi.org/10.1109/LAWP.2019.2925455</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/LAWP.2019.2925455" target="_blank" >10.1109/LAWP.2019.2925455</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Excess Attenuation Caused by Antenna Wetting of Terrestrial Microwave Links at 32 GHz

Popis výsledku v původním jazyce

Excess attenuation of microwave radio links caused by the wet antenna effect is addressed. Long-term measured attenuation of two commercial microwave links (816 m 611 m long) at 32 GHz is compared to theoretically predicted rain attenuation. The theoretical prediction is calculated using a kR relationship where k and .. are constants derived from a local disdrometer measurement, and rain rate R is available from rain gauges placed at both ends of the links to obtain the distribution of rain rate along the path length. From this comparison, excess attenuation caused by antenna wetting is derived. A new model describing wet antenna attenuation (WAA) as a function of rain rate is suggested where excess attenuation reaches approx. 3dB per antenna for a rain rate of 100 mm/h. Statistics of theoretically predicted rain attenuation, including the WAA term, is compared with statistics of measured attenuation on a set of three other links working at the same frequency. Adding the wet antenna term to the rain attenuation calculation significantly improves the accuracy of the rain attenuation prediction.

Název v anglickém jazyce

Excess Attenuation Caused by Antenna Wetting of Terrestrial Microwave Links at 32 GHz

Popis výsledku anglicky

Excess attenuation of microwave radio links caused by the wet antenna effect is addressed. Long-term measured attenuation of two commercial microwave links (816 m 611 m long) at 32 GHz is compared to theoretically predicted rain attenuation. The theoretical prediction is calculated using a kR relationship where k and .. are constants derived from a local disdrometer measurement, and rain rate R is available from rain gauges placed at both ends of the links to obtain the distribution of rain rate along the path length. From this comparison, excess attenuation caused by antenna wetting is derived. A new model describing wet antenna attenuation (WAA) as a function of rain rate is suggested where excess attenuation reaches approx. 3dB per antenna for a rain rate of 100 mm/h. Statistics of theoretically predicted rain attenuation, including the WAA term, is compared with statistics of measured attenuation on a set of three other links working at the same frequency. Adding the wet antenna term to the rain attenuation calculation significantly improves the accuracy of the rain attenuation prediction.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

<a href="/cs/project/GA17-16389S" target="_blank" >GA17-16389S: Odvození hydrologických veličin z šíření radiových vln v síti pevných mikrovlnných spojů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

IEEE Antennas and Wireless Propagation Letters

ISSN

1536-1225

e-ISSN

1548-5757

Svazek periodika

18

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

1636-1640

Kód UT WoS článku

000480310900021

EID výsledku v databázi Scopus

2-s2.0-85070477789