Electromagnetic Waves and Antennas. 19.2 Schelkunoff’s Zero Placement Method, 664. B Electromagnetic Frequency Bands, 765.

Contents • • • • • Biography [ ] Schelkunoff was born in in 1897, attended the before being drafted in 1917. He crossed into and then before settling into in 1921. There he received bachelor's and master's degrees in mathematics from the State College of Washington, now the, and in 1928 received his Ph.D. From for his dissertation On Certain Properties of the Metrical and Generalized Metrical Groups in Linear Spaces of n Dimension.

After receiving his degree, Schelkunoff joined 's research wing, which became. In 1933 he and Sally P. Mead began analysis of propagation discovered analytically by their colleague. Their analysis uncovered the. Schelkunoff appears to have been the first to notice the important practical consequences of the fact that attenuation in the decays inversely with the 3/2 power of the frequency.

In 1935 he and his colleagues reported that, then new, could transmit pictures or up to 200 conversations. During his 35-year career at Bell Labs, Schelkunoff's research included, propagation in the atmosphere and in microwave guides,, broad-band, and grounding. He ultimately served as assistant director of mathematical research and assistant vice president for university relations, taught for five years at, where he retired in 1965, and served as a consultant on for the United States Naval Station at. Schelkunoff received 15 patents, the from the (1942), and the 's (1949). He died on May 2, 1992, in.

Selected works [ ] Publications Articles [ ] • The electromagnetic theory of coaxial transmission lines and cylindrical shields. Bell Labs Technical Journal, 13(4), 532–579, 1934.: • 'Electromagnetic Waves in Conducting Tubes', Phys. 52, 1078 - 1078, November 1937.: • 'On Diffraction and Radiation of Electromagnetic Waves', Phys. 56, 308, 1939.: • A mathematical theory of linear arrays. Bell Labs Technical Journal, 22(1), 80–107, 1943.: • The impedance of a transverse wire in a rectangular wave guide.

1 (1943) 78–85. • Impedance concept in wave guides. 2 (1944) 1–15. • Proposed symbols for the modified cosine and exponential integrals.

• On waves in bent pipes. 2 (1944) 171-172.

1 (1944) 354–355. • Solution of linear and slightly nonlinear differential equations. 3 (1946) 348–355. • Conversion of Maxwell's equations into generalized telegraphist's equations. Bell Labs Technical Journal 34(5), 995–1043, 1955.: Books [ ] • Electromagnetic waves, New York: D. Pmingliu bold font free download. Van Nostrand Company, 1943.

• Advanced antenna theory, New York: John Wiley & Sons, 1952. • Antennas: Theory and Practice, Sergei A. Schelkunoff and, Bell Telephone Laboratories, New York: John Wiley & Sons, 1952. • Electromagnetic Fields, Blaisdell Publishing Company/A Division of Random House, 1963. Patents • -- Ultra short wave radio system -- References [ ]. • (October 1943).