AMTA Paper Archive

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Calibration

Extraction of narrow band responses for wideband RCS data

D. Mensa (Pac. Miss. Test Cen.), November 1984

A New antenna test facility at General Electric Space Systems Division in Valley Forge, PA.

R. Meier (General Electric Co.), November 1984

Extension of the extrapolation method for accurate swept frequency antenna gain calibrations

A. Newell (National Bureau of Standards),A. Repjar (National Bureau of Standards), S.B. Kilgore (National Bureau of Standards), November 1984

Calibration measurements of an 80 element linear phased array antenna

L.D. Poles (Rome Air Development Center), November 1983

Automatic gain measurement system

J. Bellamy (Lockheed Missiles & Space Co., Inc.),J. Hill (Lockheed Missiles & Space Co., Inc.) S. Wilson (Lockheed Missiles & Space Co., Inc.), November 1983

Design and calibration of a 250 MHz antenna test range at Canada's David Florida Laboratory

J.G. DuMoulin (Communications Research Center),N. Sutan (Canadian Astronautics Limited) R. Mameu (Communications Research Center), November 1983

Antenna calibration at the TUD-ESA spherical near-field range

F. Holm Larsen (Technical University of Denmark),J.H. Lemanzyk (Technical University of Denmark) J.E. Hansen (Technical University of Denmark), November 1983

A Partial loop source of E and H fields for antenna factor calibration (a loop cell)

R.G. FitzGerrell (National Bureau of Standards), November 1982

Microwave Antenna Measurement Services at the National Bureau of Standards

R.C. Baird (Electromagnetic Fields Division), November 1981

Design, calibration and performance of a full-sized aircraft antenna range from 30 MHz to 40GHz

J.F. Aubin (Flam & Russell, Inc.),R.E. Hartman (Flam & Russell, Inc.), November 1981

This paper summarizes the results of work performed for the Naval Air Development Center (NADC) on a new full-sized aircraft antenna range located in Warminster, PA. Because of the ever-increasing sophistication of aircraft systems, a facility capable of testing full scale mock-ups has become necessary to fully characterize the system in its operating environment. There are, however, several unique problems associated with such a range. Many systems of interest have a wing-tip to wing-tip baseline, which requires that the incident illumination be “uniform” over a significant aperture (approximately 40x15 feet for tactical aircraft). Differential path loss between wing-tip ends, as the aircraft is rotated, can be a source of large error, as can the parallax created by off-center rotation. Also, since today’s military aircraft carry a wide variety of systems, the range is required to be a “general use” range, operational over a wide frequency spectrum from 30 MHz to 40 GHz. A thorough examination of design trade-offs was performed relating the critical parameters of source beamwidth, specular reflection, path loss, phase error, and receive aperture size in order to choose the proper source antenna type, source height, and separation distance between source and test antennas for each frequency band of interest. Other factors in the range design were a maximum possible source height of 40 feet (approximately the height of the pedestal), and a desire to keep the separation distance fixed over the entire frequency range. Results are presented with indicate excellent performance over an 18 x 18 foot aperture for various polarizations. It was found that the range operates effectively as a ground reflection range from 30 MHz to 3 GHz, and as an elevated range at higher frequencies. Peak-to-peak amplitude ripples over the test aperture of 1.0 dB (corresponding to a reflection level of –25 dB) were acheived over a significant portion of the frequency spectrum.

Scale Model Shipboard Antenna Measurements with a Computer Automated Antenna Analyzer System

L.G. Sturgill,S. E. Thomas, November 1979

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