Cover; ieee press; title page; copyright page; preface; acknowledgments; 1 introduction; 1.1 lens antennas: an overview; 1.2 feeds for lens antennas; 1.3 luneburg and spherical lenses; 1.4 quasi optics and lens antennas; 1.5 lens antenna design; 1.6 metamaterial lens; 1.7 planar lens or phase-shifting surface; 1.8 applications; 1.9 antenna measurements; 2 review of electromagnetic waves; 2.1 maxwell's equations; 2.2 antenna parameters; 2.3 polarization; 2.4 wave propagation in metamaterials; 3 polyrod antennas; 3.1 polyrods as resonators; 3.2 the polyrod as a radiator.

3.3 patch-fed circular polyrod3.4 array of polyrods; 3.5 multibeam polyrod array; 4 millimeter wave lens antennas; 4.1 millimeter wave characteristics; 4.2 millimeter wave substrate lens for imaging; 4.3 millimeter wave and submillimeter wave lens; 4.4 analysis of millimeter wave spherical lens; 4.5 waveguide-fed millimeter wave integrated lens; 5 lens antennas for communications from high-altitude platforms; 5.1 introduction; 5.2 the high-altitude platform concept; 5.3 advantages of lenses over reflector antennas.

5.4 development of a shaped beam low-sidelobe lens antenna with asymmetric pattern5.5 lens antenna payload model; 5.6 multifeed lens; 5.7 multiple beam spherical lens antennas for hap payload; 6 spherical lens antennas; 6.1 introduction; 6.2 spherical lens overview; 6.3 analytical methods; 6.4 spherical lens materials and fabrication methods; 6.5 revisiting the constant-index lens; 6.6 cross-polarization properties of spherical lenses; 7 hemispherical lens-reflector scanning antennas; 7.1 introduction; 7.2 candidate scanning antenna technologies; 7.3 spherical and hemispherical lens antenna.

7.4 hemispherical lens prototype7.5 evolution of a two-layer stepped-index polymer lens; 7.6 a hemispherical lens-reflector antenna for satellite communications; 7.7 a low-index lens reflector for aircraft communications (contribution by d. gray); about the authors; index.