Advances in the Field of Antennas and Propagation since World War II: Part I - Antennas

Progress in the quantitative understanding of antennas as circuit elements, transmitters, receivers and scatterers of electromagnetic radiation is reviewed briefly for the period 1945-1961. Advances in the design of selected radiating systems with special properties are indicated. Specific reference is made to the impedance, current distribution, and pattern characteristic of cylindrical dipoles, singly and in arrays. Particular developments touched upon include slot and surface wave antennas, microwave antennas and microwave lenses, super-gain antennas, and very large antennas and arrays for radio astronomy and satellite communication. Frequency-independent "angle" antennas and log-periodic structures are reviewed briefly.