Patent ID: 9606158
Date: 2017-03-28
CPC Classifications: G01R,H01Q

Claim:
1. Antenna comprising two antenna elements forming a planar slotline antenna, wherein the antenna comprises absorber elements on two layers surrounding a layer of the planar slotline antenna, the absorber elements are formed from a foam material having a dielectric constant ∈ partially cover the antenna elements, partially not cover the antenna elements, to dampen at least a dipole-mode of the antenna elements, and not to dampen a slotline-mode of the antenna elements, wherein the antenna elements comprise a metallization layer on a circuit board, wherein the absorber elements are located on the metallization layer side of the circuit board and on a non-metallization layer side of the circuit board, wherein the metallization layer is largely covered by a protective coating, and wherein the protective coating is interrupted in a feed line connection area, wherein the feed line connection area is located at the narrowest point between the two antenna elements, and