SSH EN 303 135 V2.1.1:2016

Electromagnetic compatibility and Radio spectrum Matters (ERM); Coastal Surveillance, Vessel Traffic Services and Harbour Radars (CS/VTS/HR); Harmonised Standard covering the essential requirements of article 3.2 of the Directive 2014/53/EU

Scope

The present document applies to X-band radar sensors intended for use in Vessel Traffic Services (VTS), Coastal
Surveillance (CS) or Harbour Radar Systems with the following characteristics:
• Utilizing modulated or unmodulated pulses.
• Transmitter Peak Envelope Power up to 100 kW.
• The transceiver-antenna connection is using a hollow metallic rectangular waveguide.
• The antenna is rotating, waveguide- based and passive.
• At the transceiver output an RF-circulator is used.
NOTE 1: Since transceiver and antenna are hollow metallic rectangular waveguide based, the frequency range for
measurements that needs to be addressed covers 6,56 GHz to 26 GHz. The lower limit of this frequency
range is obtained as cut-off frequency of the combination of WR112/R84 taper section and a WR90/R100
Waveguide as defined by IEC 60153-2 [i.2]. The upper limit corresponds to the upper limit stated in
ERC/Recommendation 74-01 [i.4]. Other types of waveguide may be used by the same principles to
obtain complete measurement coverage of the frequency range of the output flange of the equipment
under test.
NOTE 2: Since at the transceiver output an RF circulator is used, it is assumed that the transceiver characteristics
remain independent from the antenna.
NOTE 3: According to article 5 of the ITU Radio Regulations [i.5] there are a number of bands between 8,5 GHz
and 10 GHz that are allocated to Radiolocation service. There are national deviations to the detailed band
usages, but the basic spectrum usage regulation is the same.
Table 1: Radiolocation service frequency bands [GHz]
8 500 - 8 550
8 550 - 8 650
8 650 - 8 750
8 750 - 8 850
8 850 - 9 000
9 000 - 9 200
9 200 - 9 300
9 300 - 9 500
9 500 - 9 800
9 800 - 9 900
9 900 - 10 000
The present document contains requirements to demonstrate that "...radio equipment shall be so constructed that it both
effectively uses and supports the efficient use of radio spectrum in order to avoid harmful interference" [i.1].
In addition to the present document, other ENs that specify technical requirements in respect of essential requirements
under other parts of article 3 of the Radio Equipment Directive [i.1] may apply to equipment within the scope of the
present document.