CONTENTS

Recommendation ITU-R BS.705-2
Policy on Intellectual Property Right (IPR)
Annex 1  HF transmitting antennas
PART 1 to Annex 1
HF transmitting antenna characteristics and diagrams
 1 Introduction
 2 Geometrical representation of antenna radiation patterns
        2.1 Graphical representation
 3 Radiation patterns and gain calculation
        3.1 General considerations
        3.2 Radiation patterns
        3.3 Directivity and gain
        3.4 Effect of the ground
 4 Arrays of horizontal dipoles
        4.1 General considerations
        4.2 Designation of arrays of horizontal dipoles
                  4.2.1 Arrays of horizontal dipoles arranged vertically (curtain antennas)
                  4.2.2 Arrays of horizontal dipoles arranged horizontally (tropical antennas)
                  4.2.3 Omnidirectional arrays of horizontal dipoles
        4.3 Slewing
        4.4 Arrays of horizontal dipoles arranged vertically
        4.5 Arrays of horizontal dipoles arranged horizontally (tropical antennas)
        4.6 Omnidirectional arrays of horizontal dipoles
                  4.6.1 General considerations
                  4.6.2 Quadrant antennas
                  4.6.3 Crossed-dipole antennas
        4.7 Calculation of the patterns of horizontal dipole arrays
                  4.7.1 General considerations
                  4.7.2 Calculation of the array factor S_z
                  4.7.3 Calculation of the array factor S_y
                  4.7.4 Calculation of the array factor S_x
Diffraction
                  4.7.5  Calculation of the patterns for omnidirectional arrays of horizontal dipoles
 5 Log-periodic antennas
        5.1 General considerations
        5.2 Designation of log-periodic antennas
                  5.2.1 Horizontal log-periodic antennas
                  5.2.2 Vertical log-periodic antennas
        5.3 Calculation of the patterns for horizontal log-periodic antennas
                  5.3.1 Basic theory
                  5.3.2 Calculation procedure
        5.4 Calculation of the patterns for vertical log-periodic antennas
                  5.4.1 Basic theory
                  5.4.2 Calculation procedure
 6 Rhombic antennas
        6.1 General considerations
        6.2 Designation of rhombic antennas
        6.3 Calculation of the patterns for rhombic antenna
 7 Vertical monopoles
        7.1 General considerations
        7.2 Designation of vertical monopoles
        7.3 Vertical monopole without an earth system
        7.4 Vertical monopole with an earth system
                  7.4.1 Vertical monopole with an earth system consisting of a solid circular disk having infinite conductivity
                  7.4.2 Vertical monopole with an earth system consisting of a number of radial wires of given length and diameter
 8 Yagi-Uda antennas
        8.1 General considerations
        8.2 Designation of Yagi-Uda antennas
        8.3 Calculation of the patterns for Yagi-Uda antennas
        8.4 References
 9 Pattern examples
PART 2 to Annex 1
Practical aspects of HF transmitting antennas
 1 Introduction
 2 Measurements of antenna radiation patterns
        2.1 Method of measurement
        2.2 Considerations when using a helicopter for the measurements
        2.3 Measuring equipment
        2.4 Measurement procedures
        2.5 Processing the measured data
 3 Comparison of theoretical and measured radiation patterns
        3.1 Comparison of theoretical and measured front-to-back ratios
 4 Influence of surrounding environment on radiation patterns
        4.1 Ground topography
        4.2 Ground conductivity
        4.3 Other site structures
 5 Variations in practical antenna performance
        5.1 Azimuthal pattern
        5.2 Slewed pattern
        5.3 Minimum practical radiation level for planning purposes
 6 Suitability and application of antennas
        6.1 Horizontal dipole antennas
        6.2 Rotatable curtain antennas
        6.3 Rhombic antennas
        6.4 Fixed azimuth log-periodic antennas
        6.5 Rotatable log-periodic antennas
        6.6 Choice of optimum antenna
Attachment 1 to Annex 1  Pattern examples
 1 Curtain antennas
        1.1 Curtain antennas without reflector
        1.2 Curtain antennas with tuned reflector
        1.3 Curtain antennas with aperiodic screen reflector
 2 Tropical antennas
 3 Log-periodic antennas
 4 Quadrant antennas
 5 Crossed dipole antennas
 6 Rhombic antennas
 7 Vertical monopoles
 8 Yagi-Uda antennas
Annex 2  HF receiving antennas
PART 1  to Annex 2
HF reference receiving antennas characteristics and diagrams
 1 Introduction
 2 Reference receiving antenna characteristics to be used for planning purposes
        2.1 Relative vertical pattern performance
        2.2 Relative horizontal pattern performance
PART 2 to Annex 2
Receiving antenna performance in urban environment
 1 Influence of surrounding environment on radiation pattern
 2 Attenuation factors associated with the receiving antenna in an urban environment
        2.1 Relative antenna performance in the urban environment