MASSACHUSETTS INSTITUTE OF TECHNOLOGY RADIATION LABORATORY SERIES Louis N. RIDENOUH, Editor-in-Chief RADAR SCANNERS AND RADOMES MASSACHUSETTS INSTITUTE OF TECHNOLOGY RADIATION LABORATORY SERIES Board of Editors Louis N. RIDENOUR, Editor-in-Chief GEORGE B. COLLINS, Deputy Editor-in-Chief BRITTON CHANCE, S. A, GOUDSMIT, R. G, HERB, HUBERT M. JAMES, JULIAN I. KNIPP, JAMES L. LAWSON, LEON B. LINFORD, CAROL G. MONTGOMERY, 0. NEWTON, ALBERT M. STONE, Louis A. TURNER, GEORGE E. VALLEY, JR., HERBERT H. WHEATON 1. RADAR SYSTEM ENGINEERING Rideuour 2. RADAR AIDS TO NAVIGATION Hall 3. RADAR BEACONS Roberts 4. LORAN Pierce, McKenzie, and Woodward 5. PULSE GENERATORS Glasoe and Lebacqz 6. MICROWAVE MAGNETRONS Collins 7. KLYSTRONS AND MICROWAVE TRIODES Hamilton, Knipp, and Kuper 8. PRINCIPLES OF MICROWAVE CIRCUITS Montgomery, Dicke, and Pnrcell 9. MICROWAVE TRANSMISSION CIRCUITS Ragnn 10. WAVEGUIDE HANDBOOK Marcuvitz 11. TECHNIQUE OF MICROWAVE MEASUREMENTS Montgomery 12. MICROWAVE ANTENNA THEORY AND