Download Antenna Engineering Handbook by Richard C. Johnson PDF

By Richard C. Johnson

Newly revised and up-to-date, this best-selling reference offers the fundamental ideas, equipment, and knowledge had to clear up the engineering difficulties that come up in antenna layout and alertness. An array of prime specialists from RCA, Raytheon, Scientific-Atlantic, and different significant organisations makes it the main authoritative A-to-Z number of cutting-edge details on hand. a person concerned with antennas may be an keen shopper for this up-to-date vintage. Technicians will use it to raised comprehend the antennas they paintings with. starting engineers will wish its descriptive fabric and layout information. skilled engineers will use it as their basic resource of layout info. Senior engineers will use the guide to wake up to hurry on new antennas and purposes. And layout engineers will locate rules to resolve new and tough difficulties.

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Sinclair, E. C. Jordan, and E. W. , vol. 35, December 1947, pp. 1451-1462. Chapter 3 Arrays of Discrete Elements * Mark T. Ma National Institute of Standards and Technology Introduction 3-2 Uniform Linear Arrays 3-2 Broadside Arrays of Isotropic Elements 3-3 Broadside Arrays with Practical Antennas as Elements 3-7 Ordinary End-Fire Arrays of Isotropic Elements 3-10 Ordinary End-Fire Arrays of Practical Antennas as Elements 3-12 Yagi-Uda Arrays 3-13 Improved ~nd-FireArrays 3-15 Linear Arrays with Tapered Excitations-Equal Sidelobes 3-1 7 A New Approach for Treating Optimum Broadside and End-Fire Arrays 3-18 Optimum Broadside Arrays When d c X/2 3-24 optimum End-Fire Arrays When d Is Less Than the Maximum Allowable Spacing 3-26 Array of Arrays 3-29 'Contribution of the National Institute of Standards and Technology not subject to copyright.

Rep. , October 1952; see also "The Effect of Aperture Errors on the Antenna Radiation Pattern," Supplemento a1 Nuovo Cimento, vol. 9, no. 3, 1952, pp. 364-380. L. L. Bailin and M. J. Ehrlich, "Factors Affecting the Performance of Linear Arrays," IRE Proc.. vol. 41, February 1953, pp. 235-241. H. F. O'Neill and L. L. Bailin, "Further Effects of Manufacturing Tolerances on the Performance of Linear Shunt Slot Arrays," IRE Trans. , vol. AP-4, December 1952, pp. 93-102. N. I. Korman, E. B. Herman, and J.

2-17 Theoretical effect of error currents on radiation pattern of 25-element broadside array designed for 29-dB sidelobe suppression. ( a ) No error. 40rms error in each element at random phase. The loss in gain can also be determined from this analysis. An excellent approximation for the actual gain G with errors as compared with the theoretical gain Go when no errors are present is given by where d = spacing between elements X = wavelength The above analysis has concerned itself only with the accuracy of the current values required for the array.

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