ETSI - EN 301 390
Fixed Radio Systems; Point-to-point and Multipoint Systems; Unwanted emissions in the spurious domain and receiver immunity limits at equipment/antenna port of Digital Fixed Radio Systems
|Publication Date:||1 November 2021|
The scope of the present document is to define specific limits at antenna port for unwanted emissions in the spurious domain and receiver immunity for suitable inter-working of Digital Fixed Radio Systems (i.e. Point-to-point and Multipoint systems) in the same or in different frequency band whenever allocated to Fixed Service in the range 9 kHz to 300 GHz.
However systems with fundamental emission below 30 MHz are not considered relevant for Digital Fixed Radio Systems and are outside the scope of the present document.
The present document adopts CEPT/ERC Recommendation 74-01  which gives limits for Unwanted emissions in the Spurious domain with particular regards to "inter Services" operations.
In addition, it is recognized the need for a general requirement for receiver immunity to relatively high interference signals generated by any source and at any frequency in the same range identified as spurious domain by CEPT/ERC Recommendation 74-01 .
Some ETSI deliverables for DFRS provide limits for both "external" and "internal" spurious domain emissions and the latter are outside the scope of the present document. Moreover the limits for emissions given in the present document do not prevent more stringent requirement given in those deliverables for intra-system purpose (i.e. local Transmitter to Receiver interference usually referred as "internal").
In order to help the understanding of limits given in CEPT/ERC Recommendation 74-01 , in annex B, unwanted emissions in the spurious domain are analysed from the point of view of a suitable test method for conformance testing.