Title :
Perforated plate lens for millimeter quasi-optical systems
Author :
Goldsmith, Paul F.
Author_Institution :
Dept. of Phys. & Astron., Massachussetts Univ., Amherst, MA, USA
fDate :
6/1/1991 12:00:00 AM
Abstract :
A perforated plate lens operating in the 2.5-mm wavelength range designed to carry out transformation of a Gaussian beam to produce a focused beam of small dimensions is described. Truncation of the incident beam by the lens at the -20 dB relative power level is shown both theoretically and experimentally to allow a highly Gaussian power distribution of the focused radiation. The waist radius and location of the output beam of the perforated plate lens agree well with the predictions of Gaussian beam transformation formulas over the measured 12% fractional bandwidth
Keywords :
lenses; waveguide components; 2.5 mm; Gaussian beam transformation; Gaussian power distribution; focused beam; focused radiation; fractional bandwidth; metal waveguide lens; millimeter quasi-optical systems; output beam; perforated plate lens; relative power level; waist radius; Delay; Dielectric materials; Lenses; Optical design; Optical surface waves; Optical waveguides; Particle beam measurements; Phased arrays; Power distribution; Surface waves;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
