Asymmetric ridge waveguide collinear slot array antenna

Details Asymmetric ridge waveguide collinear slot array antenna Asymmetric ridge waveguide collinear slot array antenna

1985-04-25

1987-01-20

Lieberman, Eli

Communications: radio wave antennas

Antennas

Slot type

H01Q 1312

Patent

active

046383239

ABSTRACT:
In a slotted array antenna (12), an asymmetric ridge waveguide element (13) defining colliner radiating slots (16), said waveguide elements (13) defining a central hollow region (13') and an axial ridge (13") separating first and second series of side chambers (17' and 17") alternating in height with respect to each other, whereby production of second order beams of radiation from said antenna (12) is eliminated and much lower side lobe levels are produced when the element (13) is used in an array scanned in a plane perpendicular to the element axes.

REFERENCES:
patent: 3189908 (1965-06-01), Provencher
H. Gruenbert, "Second-Order Beams of Slotted Waveguide Arrays", Canadian Journal of Physics, vol. 31, pp. 55-69, Jan. 1953.
S. Silver, "Microwave Antenna Theory and Design", McGraw-Hill Book Co., New York, N.Y., Ch. 9, Section 9:19, p. 318 (1949).
L. A. Kurtz & J. S. Yee, "Second-Order Beams of Two Dimensional Slot Arrays", IRE Transaction on On Antennas and Propagation, pp. 356-362, Oct. 1957.
S. B. Cohn, "Properties of Ridge Wave Guide", Proceeding of the I.R.E., pp. 783-788, Aug. 1947.
J. R. Pyle, "The Cutoff Wavelength of the TE.sub.10 Mode in Ridged Rectangular Waveguide of Any Aspect Ratio", IEEE Transaction on Microwave Theory and Techniques, vol. MTT 14, No. 4, pp. 175-183, Apr. 1966.
Samuel Hopfer, "The Design of Ridged Waveguides", IRE Transaction-Microwave Theory and Techniques, pp. 20-29, Oct.

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