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An antenna array system includes a launcher comprising an antenna configured to establish and steer a wavefront, and an array of Yagi-Uda director trains coupled to the launcher and located in the path of the wavefront. The array of Yagi-Uda director trains is configured to influence a beamwidth of

An antenna array system includes a launcher comprising an antenna configured to establish and steer a wavefront, and an array of Yagi-Uda director trains coupled to the launcher and located in the path of the wavefront. The array of Yagi-Uda director trains is configured to influence a beamwidth of the launcher. A method for beam steering includes launching a wavefront generated by an antenna through an array of director elements, and steering the wavefront. The array of director elements focuses the wavefront and influences gain of the antenna over plural steering angles.

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What is claimed is: 1. An antenna array system, comprising: a launcher comprising an antenna configured to establish and steer a wavefront; and an array of Yagi-Uda director trains coupled to the launcher and located in a path of the wavefront, wherein: the array of Yagi-Uda director trains is conf

What is claimed is: 1. An antenna array system, comprising: a launcher comprising an antenna configured to establish and steer a wavefront; and an array of Yagi-Uda director trains coupled to the launcher and located in a path of the wavefront, wherein: the array of Yagi-Uda director trains is configured to influence a beamwidth of the launcher; the array of Yagi-Uda director trains comprises alternating layers of printed circuit cards and structural layers; the alternating layers of the printed circuit cards and the structural layers comprise a first printed circuit card arranged adjacent to a second printed circuit card with a corresponding structural layer therebetween; and the first printed circuit card is arranged between the antenna and the second printed circuit card. 2. The antenna array system of claim 1, wherein the launcher comprises: a line array of antenna elements. 3. The antenna array system of claim 1, wherein the launcher comprises: at least one of a linearly polarized antenna, a circularly polarized antenna, or a dual-polarized antenna. 4. The antenna array system of claim 1, wherein the launcher comprises: an antenna array having at least one row of antenna elements. 5. The antenna array system of claim 4, wherein the array of Yagi-Uda director trains is configured to produce a narrow beamwidth in a plane perpendicular to the row of antenna elements. 6. The antenna array system of claim 4, wherein the array of Yagi-Uda director trains is configured to produce a narrow beamwidth in a plane parallel to the row of antenna elements. 7. The antenna array system of claim 4, wherein the array of Yagi-Uda director trains is configured to facilitate a larger antenna element spacing in the antenna array. 8. The antenna array system of claim 4, wherein the array of Yagi-Uda director trains is configured to facilitate a larger row spacing in the antenna array. 9. The antenna array system of claim 1, wherein each of the printed circuit cards comprises plural crossed-dipole elements printed on a thin film. 10. The antenna array system of claim 1, wherein the structural layers are foam. 11. The antenna array system of claim 1, wherein each Yagi-Uda director train includes plural dipole elements. 12. The antenna array system of claim 1, wherein the array of Yagi-Uda director trains is configured to influence a gain of the launcher. 13. The antenna array system of claim 12, wherein the array of Yagi-Uda director trains is configured to increase the gain of the launcher. 14. The antenna array system of claim 1, wherein the first printed circuit board and the second printed circuit board are arranged in a first direction substantially orthogonal to a second direction in which the antenna is configured to emit the wavefront, such that the first printed circuit board and the second printed circuit board are arranged in the path of the wavefront. 15. An antenna array system, comprising: means for launching a wavefront, the launching means including an antenna; and means coupled to the launching means for focusing the wavefront, wherein: the focusing means is configured to produce a narrow beamwidth in a plane perpendicular to the launching means; the focusing means comprises an array of Yagi-Uda director trains; the array of Yagi-Uda director trains comprises alternating layers of printed circuit cards and structural layers; the alternating layers of the printed circuit cards and the structural layers comprise a first printed circuit card arranged adjacent to a second printed circuit card with a corresponding structural layer therebetween; and the first printed circuit card is arranged between the antenna and the second printed circuit card. 16. The antenna array system of claim 15, wherein the launching means comprises: a line array of antenna elements. 17. The antenna array system of claim 16, wherein the line array of antenna elements comprises: a waveguide line array. 18. The antenna array system of claim 16, wherein the focusing means is configured to produce a narrow beamwidth in a plane parallel to the line array of antenna elements. 19. The antenna array system of claim 15, wherein the launching means is configured to establish the wavefront and change a direction of the wavefront. 20. The antenna array system of claim 15, wherein the structural layers are foam. 21. The antenna array system of claim 15, wherein each Yagi-Uda director train comprises: plural crossed-dipole elements. 22. The antenna array system of claim 15, wherein each Yagi-Uda director train comprises: plural dipole elements. 23. The antenna array system of claim 15, wherein the focusing means is configured to influence a gain of the launching means. 24. The antenna array system of claim 23, wherein the focusing means is configured to increase the gain of the launching means. 25. The antenna array system of claim 15, wherein each of the printed circuit cards comprises plural crossed-dipole elements printed on a thin film. 26. The antenna array system of claim 15, wherein the first printed circuit board and the second printed circuit board are arranged in a first direction substantially orthogonal to a second direction in which the antenna is configured to emit the wavefront, such that the first printed circuit board and the second printed circuit board are arranged in the path of the wavefront. 27. A method for beam steering, comprising: launching a wavefront generated by an antenna through an array of director elements, the array of director elements comprising alternating layers of printed circuit cards and structural layers; and steering the wavefront, wherein the array of director elements focuses the wavefront and influences gain of the antenna over plural steering angles, wherein: the alternating layers of the printed circuit cards and the structural layers comprise a first printed circuit card arranged adjacent to a second printed circuit card with a corresponding structural layer therebetween; and the first printed circuit card is arranged between the antenna and the second printed circuit card. 28. The method of claim 27, wherein the launching comprises: launching the wavefront generated by a line array of antenna elements. 29. The method of claim 28, wherein the array of director elements produces a narrow beamwidth in a plane perpendicular to the line array. 30. The method of claim 28, wherein the array of director elements produces a narrow beamwidth in a plane parallel to the line array. 31. The method of claim 27, wherein the launching comprises: launching the wavefront generated by a line array of antenna elements through an array of Yagi-Uda director trains coupled to the line array. 32. The method of claim 27, wherein the array of director elements increases the gain of the antenna over plural steering angles. 33. The method of claim 27, wherein the structural layers are foam. 34. The method of claim 27, wherein each of the printed circuit cards comprises plural crossed-dipole elements printed on a thin film. 35. The method of claim 27, wherein the first printed circuit board and the second printed circuit board are arranged in a first direction substantially orthogonal to a second direction in which the antenna is configured to emit the wavefront, such that the first printed circuit board and the second printed circuit board are arranged in the path of the wavefront.