ITU-R REPORT BO.810-4

Abstract

<strong>Introduction</strong> <br>The WARC-8S-77 agreed to reference patterns for satellite transmitting and earth-station receiving antennas for planning the 12 GHz broadcasting-satellite service in Regions&#160;1 and 3. The adopted patterns are contained in Annex 8 to the Final Acts of the WARC-BS-77. Similarly, antenna reference patterns were adopted at the RARC SAT-83 for planning the 12 GHz broadcasting-satellite service in Region 2. These patterns are found in Annex 5, &#167; 3 of Part I of the Final Acts of the RARC SAT-83. (See also &#167; 3 of Annex 5 of Appendix 30 (ORB-85) of the Radio Regulations.) <br>The purpose of this Report is to introduce new reference antenna patterns for spacecraft transmitting and ground receiving equipment. This information can be used in system planning. The reference patterns are presented in &#167; 2 and a description of the present state of technology, including experimental data which justifies the reference patterns. is presented in &#167; 3.