CONTENTS

Policy on Intellectual Property Right (IPR)
�1���� Introduction
�2���� Scope
�3���� Related Reports and Recommendations in ITU-R
�4���� Definitions
�5���� Typical antenna configuration cases
������� 5.1���� Antenna isolation of space separated antennas
������� 5.2���� Antenna isolation of multi-band antennas
�6���� Basic analytical methods for determining antenna isolation
������� 6.1���� Horizontal space isolation calculation
������� 6.2���� Vertical space isolation calculation
����� ��6.3���� Slant space isolation calculation
������� 6.4���� Simulation evaluation of analytical formulas
�7���� Additional considerations for antenna isolation
������� 7.1���� Influence of objects near the antenna
������� 7.2���� Frequency dependency
���� ���7.3���� Polarization
������� 7.4���� Multiple interfering antennas
�8���� Antenna isolation measurements
������� 8.1���� Measurement methodology
������� 8.2���� Measurement results
����������������� 8.2.1���� Co-located base station antennas in the band 2 500-2 690 MHz
����������������� 8.2.2���� Measurements of horizontal separation in the 900, 1800 and 2 GHz bands
����������������� 8.2.3���� Measurements of vertical isolation on a real base station tower
��� ��������������8.2.4���� Inter-band antenna isolation measurement results
�9���� Spurious emissions, blocking and intermodulation interference effects
������� 9.1���� Spurious emission interference isolation analysis
������� 9.2���� Blocking interference isolation analysis
������� 9.3���� Intermodulation interference isolation analysis
������� 9.4���� Isolation methodology
10���� Summary and conclusions
Annex 1� Isolation calculation examples
�1���� Interference technical specifications
�2���� The isolation requirements for System A
������� 2.1���� The spurious emission isolation requirements for System A
������� 2.2���� The blocking isolation requirements for System A
������� 2.3���� The intermodulation isolation requirements for System A
������� 2.4���� Isolation requirements for System A
������� 2.5���� Conclusion
Annex 2� Simulation analysis of analytical methods for antenna isolation
�1���� Models for antenna isolation
�2���� Method for analysis
�3���� Results
�4���� Conclusions
Annex 3� Influence of objects near the antenna
�1���� Example of a conductor mast�s influence on the isolation between two half-wave dipole antennas
������� 1.1���� A scenario of two antennas sharing a conductor mast
������� 1.2���� The results� reference value for real directional BS antenna
Annex 4� Theoretical derivation of the equation for vertical separation
�1���� Theoretical derivation for the formula of vertical isolation between two small dipoles
�2���� Theoretical derivation for the formula of vertical isolation between two half-wave dipoles
Annex 5� Spurious emissions, blocking and intermodulation interference effects
�1���� Spurious emission interference isolation analysis
�2���� Blocking interference isolation analysis
�3���� Intermodulation interference isolation analysis
Annex 6� Glossary