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EN 303 347-3 V2.1.1 Standard



#antenna #used #transceiver #waveguide #can


Radio equipment Directive (2014/53/EU)

  Last Official Journal reference

Friday 1st of December 2023


Meteorological Radars; Harmonised Standard for access to radio spectrum; Part 3: Meteorological Radar Sensor operating in the frequency band 9 300 MHz to 9 500 MHz (X band)


The present document specifies technical characteristics and methods of measurements for X-band meteorological radar systems intended for the surveillance and classification of hydrometeors with the following characteristics:• Operating in the following frequency range:- 9 300 MHz to 9 500 MHz• Utilizing unmodulated pulses or phase/frequency modulated pulses also known as pulse compression.• The maximum output power (PEP) is not greater than 250 kW (i.e. 84 dBm).• The transceiver antenna connection and its feeding RF line use a hollow metallic rectangular waveguide.• The antenna rotates and can be changed in elevation.• The used waveguide is WR90/WG16 waveguide according to IEC 60153-2.• The antenna feed is waveguide based and the antenna is passive.• The orientation of the transmitted field from the antenna can be vertical or horizontal orientated or it can be both simultaneously.• At the transceiver output an RF circulator is used.NOTE 1: Since at the transceiver output an RF circulator is used, it is assumed that the transceiver characteristics remain independent from the antenna.NOTE 2: According to provision 5.475B of the ITU Radio Regulations, ground-based radars used for meteorological purposes in the band 9 300 MHz to 9 500 MHz have priority over other radiolocation uses.NOTE 3: Further technical and operational characteristics of meteorological radar systems can be found in Recommendation ITU-R M.1849-1.NOTE 4: The relationship between the present document and essential requirements of article 3.2 of Directive 2014/53/EU is given in Annex A.


Friday 11th of November 2022

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