1 Introduction. - 1. 1 Self-complementary and related broad-band antennas. - 1. 2 Background to the emergence of the self-complementary antenna. - 1. 3 Brief history of self-complementary antennas. - 2 Fundamental Theories of Complementary Structures. - 2. 1 A pair of mutually dual structures. - 2. 2 Symmetrical and anti-symmetrical electromagnetic fields. - 2. 3 Electromagnetic fields for complementary planar structures. - 3 Impedance Relationships for Complementary Planar Structures. - 3. 1 Input impedances of mutually complementary two-terminal planar structures. - 3. 2 Input impedances of mutually complementary multi-element planar structures. - 3. 3 Examples of complementary planar structures. - 4 Origination of Self-Complementary Planar Structures and Discovery of their Constant-Impedance Property. - 4. 1 Origination of self-complementary planar structures. - 4. 2 Constant-impedance property of self-complementary planar structures. - 4. 3 Examples of self-complementary planar structures. - 5 Multi-Terminal Self-Complementary Planar Structures. - 5. 1 Rotationally symmetric multi-terminal self-complementary planar structures. - 5. 2 Single-phase excitations for rotationally symmetric multi-terminal self-complementary planar structures. - 5. 3 Axially symmetric multi-terminal self-complementary planar structures. - 5. 4 Axially symmetric two-port self-complementary planar structures. - 5. 5 Coupling-less property between loaded unipole-notch type self-complementary planar structures. - 6 Three-Dimensional Self-Complementary Structures. - 6. 1 A pair of dual structures consisting of crossed infinite planar sheets of compound perfect conductors. - 6. 2 Three-dimensional complementary structures. - 6. 3 Three-dimensional self-complementary structures. - 6. 4 Examples of three-dimensional self-complementary structures. - 7 Stacked Self-Complementary Antennas. - 7. 1 Stacking of self-complementary antennas. - 7. 2 Co-planar stacked self-complementary antennas. - 7. 3 Some variations of co-planar stacked self-complementary structures. - 7. 4 Side-by-side stacked self-complementary antennas. - 7. 5 Compound-stacked self-complementary antennas. - 8 General Considerations about Approximations and Modifications of Self-Complementary Antennas. - 8. 1 Approximations and modifications for practical purposes. - 8. 2 Approximation by truncation. - 8. 3 Approximation by replacement with conducting rods. - 8. 4 Modification by deformation. - 8. 5 Modification by partial excision. - 8. 6 An example of transformation from a self-complementary sheet structure to the conducting rod structure. - 9 Developmental Studies of Rotationally Symmetric Self-Complementary Antennas. - 9. 1 Alternate-leaves type self-complementary antenna. - 9. 2 Approximation and modification of alternate-leaves type self-complementary antennas. - 9. 3 Modified four-terminal self-complementary antenna on conical surface. - 9. 4 Non-constant-impedance property of incorrectly arranged log-periodic structures. - 9. 5 Other developmental studies for derivatives of rotationally symmetric self-complementary structures. - 10 Developmental Studies of Axially Symmetric Self-Complementary Antennas. - 10. 1 Experimental study of equally spaced unipole-notch array antenna. - 10. 2 Equally spaced unipole-notch array antenna on a conical ground plane for the circularly polarized wave. - 10. 3 Unipole-notch alternate array antennas stacked on both edges of an angular conducting sheet. - 10. 4 Unipole-notch array antennas formed on the substrate of a printed circuit. - 11 Monopole-Slot Type Modified Self-Complementary Antennas. - 11. 1 Monopole-slot type antennas derived from the three-dimensional self-complementary antenna. - 11. 2 A monopole-slot antenna element as a limiting case. - 12 Conclusion. - References. - Author Index. Language: English