An Active Reconfigurable Antenna at 60 GHz Based on Plate Inhomogeneous Lens and Feeders

Abstract

International audienceThe conception and performances of a 60 GHz active antenna, reconfigurable in terms of radiation pattern is described in this paper. This antenna is based on a plate inhomogeneous Luneburg lens fed by several ridged waveguide sources. The manufacturing technique of the plate lens is briefly described and its measured radiation patterns are given, showing the good performances of this lens. Simulated and measured radiation patterns are given for a passive lens antenna fed by several sources. The results show the beam scanning capability of this antenna. The active antenna is described and measurements of radiation patterns for several beams are given and demonstrate the beam scanning and beam shaping reconfigurability

Reconfigurable Antennas and Their Applications

“…An example of such antennas is the one shown in Fig. 16 (Lafond et al 2013). This antenna is composed of 16 different patches that are fed by a corporate feeding network.…”

“…The lens is a plate Luneburg lens that is defined as an inhomogeneous lens with infinity focus points. Once a patch illuminates the lens, the other patches are loaded with 50 Ω (Lafond et al 2013).…”

Integrated lens antenna array with full azimuth plane beam scanning capability at 60 GHz

“…The beam scanning is achieved by activating one or more feeding antenna element in array resulting in a predefined radiation pattern. However, in most of the ILAs the degradation of gain, beam width and side lobe level of antenna radiation beams particularly due to inter element coupling and shadow effect at the two extreme edges of scanning range is inevitable .…”

Enhancement of Angular Resolution of a Flat-Base Luneburg Lens Antenna by Using Correlation Method

“…There has been considerable interest in the design of antennas capable of significantly increasing the directivity, lowering the sidelobe levels, increasing the angular scanning range, by combining the features of lenses [2,3]. The lens proposed by Luneburg [4], which has the capability of all-angle-scan regardless of the frequency of operation, as well as excellent focusing characteristics, is an attractive candidate for many applications such as multi-beam antennas, multi-frequency scanning, and spatial scanning.…”