The impact of shape and size of air cavity on extended hemispherical lens characterization for wireless applications at 61 GHz

摘要: In this article, a design of extended hemispherical lenses at 61 GHz with an air cavity is presented. Using above the primary feed in lens simple and low-cost solution to reduce size minimize weight without affecting radiation characteristic input impedance radiating element which located focus. We perform analysis model by using 3D field simulator compare effect shape on lens. The are manufactured HDPE (High Density Polyethylene) material permittivity er = 2.3 for millimeter-wave radar applications GHz. maximum directivity about 30 dBi 3 dB-beam width 3.5°. Two diameter 80 mm 60 were fabricated their measured was compared simulation results.