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This paper focuses on the introduction of sparsity in a planar spaceborne SAR antenna array operating in Ka-band. Given the different requirements in azimuth and elevation, and the large size of the array, sparsity is introduced along the two dimensions separately. While sparsity along the azimuth dimension was considered in an earlier paper, the application of density tapering along the elevation...
This contribution addresses the problem of designing a sparse active array antenna for spaceborne SAR applications at Ka-band. The main driver for the design is limiting the recurring manufacturing costs associated to the number of active modules, while preserving main performance and insuring a certain level of industrial feasibility. A sparse configuration based on linear subarrays is presented...
This contribution addresses the problem of designing a sparse active array antenna for spaceborne SAR applications at Ka-band. The main driver for the design is limiting the recurring manufacturing costs associated to the number of active modules, while preserving main performance and insuring a certain level of industrial feasibility. A sparse configuration based on linear subarrays is presented...
We have designed a novel sub-mm radiation detector based upon a twin slot antenna placed in the focus of a Si elliptical lens. We use a novel Electromagnetic Band Gap (EBG) super-layer, consisting of 2 frac14 lambda dielectric layers of Si (epsiv=11.7) and SiO2 (epsiv=4) and a Si carrier wafer to enhance the directivity of the feed. The antenna is coupled to a Kinetic Inductance Detector, KID, an...
This paper presents a truly integrated antennas in mm and sub-mm wave regimes can be realized by printing planar radiating elements in the focal plane of elliptical or extended hemispherical lens antennas. The elliptical shape of the lens gives high focusing properties provided that its eccentricity is properly related to its dielectric constant (e=1/epsiv1/2r). In the frame of cooperation activity...
This paper proposes a novel imaging architecture suited for use in the mm and the sub-mm wave regimes. The structure is composed by a one dimensional array of radiators in order to enhance the image acquisition time with respect to single element detection. Moreover each of the antenna elements composing the array is characterized by a relatively broad band which opens the possibility for the array...
This paper proposes a novel imaging architecture suited for use in the mm and the sub-mm wave regimes. The structure is composed by a one dimensional array of radiators in order to enhance the image acquisition time with respect to single element detection. Moreover each of the antenna elements composing the array is characterized by a relatively broad band which opens the possibility for the array...
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