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EN 303 347-2 V2.1.1 Standard

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  Keywords:

#antenna #note #transceiver #waveguide #can

  Directive

Radio equipment Directive (2014/53/EU)

  Last Official Journal reference

Friday 1st of December 2023

  Description:

Meteorological Radars; Harmonised Standard for access to radio spectrum; Part 2: Meteorological Radar Sensor operating in the frequency band 5 250 MHz to 5 850 MHz (C band)

  Purpose

The present document specifies technical characteristics and methods of measurements for C-band meteorological radar systems intended for the surveillance and classification of hydrometeors with the following characteristics:• Operating in the following frequency range:- 5 250 MHz to 5 850 MHz.• Utilizing unmodulated pulses or phase/frequency modulated pulses also known as pulse compression.• The maximum output power (PEP) does not exceed 1 MW (i.e. 90 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 WR187/WG12 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 5.452 of the ITU Radio Regulations, ground-based radars used for meteorological purposes in the band 5 600 MHz to 5 650 MHz are authorized to operate on a basis of equality with stations of the maritime radio navigation service.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.

  Publication

Friday 11th of November 2022

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