By Topic

A wide-band transverse-slot flush-mounted array

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
E. Jones ; Stanford Research Institute, Menlo Park, CA, USA ; J. Shimizu

This paper describes the design analysis and measured performance of an antenna composed of an H -plane array of parallel waveguides having quarter-wavelength-thick transverse slots extending completely across the array. Each relatively wide nonresonant slot in this array radiates only a small amount of power, and the dimensions of the slots are relatively uncritical. The radiated H field from this antenna lies parallel to the transverse slots. The cosine of the angle between the direction of maximum radiation and the plane of the antenna is equal to the velocity of light divided by the phase velocity of propagation along the array. An experimental antenna was built with a radiating aperture 9 inches wide and 20 inches long. The antenna was fed from a hog horn which yielded an approximately sinusoidal H -plane illumination over the 9-inch aperture width. The power coupled from the transverse slots was varied along the 20-inch length of the aperture to achieve a Taylor aperture distribution with -25-db E -plane sidelobes. At the design frequency of 11 kmc, the E -plane and H -plane beamwidths were 5.4\deg and 7.3\deg , while the E -plane and H -plane first-sidelobe levels were -24.7 db and -24.2 db, respectively, in close agreement with theoretical expectations. The direction of maximum radiation was within 0.35\deg of the design value at 11 kmc. Good radiation patterns were obtained with the antenna from 7.0 kmc, which is slightly above the cutoff frequency of the guides, to 11.4 kmc, which is slightly below the frequency at which spurious lobes are generated by the widely-spaced slots.

Published in:

IRE Transactions on Antennas and Propagation  (Volume:8 ,  Issue: 4 )