| US 7,541,994 B2 | ||
| Refractive compact range | ||
| Dean R. Marshall, Tucson, Ariz. (US); and David J. Knapp, Tucson, Ariz. (US) | ||
| Assigned to Raytheon Company, Waltham, Mass. (US) | ||
| Filed on May 17, 2006, as Appl. No. 11/435,623. | ||
| Prior Publication US 2007/0268198 A1, Nov. 22, 2007 | ||
| Int. Cl. G01R 29/10 (2006.01) | ||
| U.S. Cl. 343—703 [343/911 R] | 12 Claims |
| 1. A radio frequency test range comprising:
a physical space that includes a source zone, and a test zone for placing a device to be tested;
an aspheric lens between the source zone and the test zone;
an apodizer placed between the source zone and the lens; and
an array of antennas in the source zone;
wherein the lens collimates energy emitted by the array of antennas into the test zone;
wherein the apodizer is located relative to the lens such that the apodizer prevents radiation emitted from the source zone
from reaching an edge of the lens; and
wherein the apodizer at least reduces destructive interference patterns in the energy reaching the test zone by removing the
edge of the lens as a re-radiating surface.
|