About the Author -- Preface -- Acknowledgments -- 1 Introduction -- 1.1 Background -- 1.2 Balanced and Unbalanced Antennas -- 1.3 Even and Odd Modes -- 1.4 Differential and Single-Ended Circuits -- 1.5 An Important Ratio -- 1.6 Mixed-Mode S-Parameters -- 1.7 Balun -- 1.8 Concluding Remarks -- 2 Differential Wire Antennas -- 2.1 Introduction -- 2.2 Dipole and Monopole Antennas -- 2.3 Folded Dipole and Monopole Antennas -- 2.4 Loop and Half-Loop Antennas -- 2.5 Loop-Dipole and Half-Loop-Monopole Antennas -- 2.6 Yagi-Uda and Half-Yagi-Uda Antennas -- 2.7 Concluding Remarks -- 3 Differential Slot Antennas -- 3.1 Introduction -- 3.2 Slot and Half-Slot Antennas -- 3.3 Self-Complementary Antennas -- 3.4 Yin-Yang Antennas -- 3.5 Concluding Remarks -- 4 Differential Microstrip Patch Antennas -- 4.1 Introduction -- 4.2 Cavity Model -- 4.3 Rectangular Patch -- 4.4 Circular Patch -- 4.5 Stacked Patch -- 4.6 Patch Arrays -- 4.7 Applications -- 4.8 Concluding Remarks -- 5 Differential Microstrip Shorted Patch Antennas -- 5.1 Introduction -- 5.2 SPA and DSPA -- 5.3 Modified SPA and DSPA -- 5.4 PIFA and DPIFA -- 5.5 ME and DME Dipoles -- 5.6 Concluding Remarks -- 6 Differential Microstrip Slot Antennas -- 6.1 Introduction -- 6.2 Resonant Modes -- 6.3 Excitation of Resonant Modes -- 6.4 Half-Wavelength Microstrip Slot Antenna -- 6.5 Full-Wavelength Microstrip Slot Antenna -- 6.6 Concluding Remarks -- 7 Differential Microstrip Grid Array Antennas -- 7.1 Introduction -- 7.2 Basic Configuration -- 7.3 Principle of Operation -- 7.4 Fundamental Characteristics -- 7.5 Differential Excitation -- 7.6 Design Procedure, Formulas, and Examples -- 7.7 An Impedance Matching Technique -- 7.8 A Slow-Wave Structure -- 7.9 Dual Current Modes -- 7.10 Co-Aperture Dual Bands -- 7.11 Applications -- 7.12 Concluding Remarks -- 8 Differential Printed Antennas -- 8.1 Introduction -- 8.2 Quasi-Yagi Antennas -- 8.3 Fractal Antennas -- 8.4 Spiral Antennas -- 8.5 Applications -- 8.6 Concluding Remarks -- 9 Differential Antenna Measurements -- 9.1 Introduction -- 9.2 Impedance -- 9.3 Efficiency -- 9.4 Radiation Pattern -- 9.5 Gain -- 9.6 Concluding Remarks -- References -- Index.