Patent ID: 9722316
Date: 2017-08-01
CPC Classifications: H01Q

Claim:
1. An antenna comprising: a receiver; a horn having a first end disposed on the receiver and a second end defining an aperture positioned opposite the receiver, the horn defining a slant length and an axial length being half the slant length and having a flare angle of about 45 degrees; and a lens disposed within the aperture of the horn, the lens having a first surface facing inward toward the receiver and a second surface opposite the first surface and facing outward away from the horn; an anti-reflection layer comprising a dielectric material and disposed on the first surface of the lens, the anti-reflection layer defining holes arranged in a 50/50 material to void ratio and having a thickness of a quarter wavelength of a signal received by the antenna, each hole formed through the thickness of the anti-reflection layer.