MEASUREMENTS OF FAR-FIELD RADIATION PATTERNS IN THE NEAR-FIELD OF A RADIATING LENS FED WITH A GOUBAU BEAM-WAVEGUIDE.

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Abstract:

The purpose of this report is to present the results of an experiment designed to measure the far-field radiation pattern of a radiating lens fed by a Goubau beam-waveguide in the near-field. The aperture diameter of the radiating lens is 50 wavelengths. The experiment was performed at a frequency of 71.5 Gc. The transmitting and test antennas was separated by a minimum distance of 30 feet to measure far-field patterns. For the experiment lenses were designed which give, approximately, a plane phase front at distances of 2.5 feet, 5 feet, and 10 feet from the transmitting antenna. This correcting lens is placed flush with the radiating lens of the test antenna. The lens design, and the experimental results are given.

Author(s):
Kauffman, J. F.
Author Organization(s):
ILLINOIS UNIV URBANA ENGINEERING EXPERIMENT STATION
Descriptive Note:
Technical rept. no. 81,
Annotation:
Measurements of far-field radiation patterns in the nearfield of a radiating lens fed with a goubau beam-waveguide.
Pagination:
0029

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Contract/Grant Number(s):
AF33 657 10474
Task Number(s):
627801
Project Number(s):
6278
 Subject Terms
Communities of Interest:
Air Platforms
Descriptor(s):
*RADIOFREQUENCY LENSES, LENS ANTENNAS, LENSES, TEST METHODS, GRAPHICS
Report Date:
1964 Jul 01