Noncollimating MmW Polyethylene Lens Mitigating Dual-Source Offset From a Tx/Rx WiGig Module

作者：Bisognin Aimeric^*; Titz Diane; Ferrero Fabien; Jacquemod Gilles; Pilard Romain; Gianesello Frederic; Gloria Daniel; Lugara Delphine; Lima Eduardo B; Costa Jorge R; Fernandes Carlos A; Luxey Cyril

来源：IEEE Transactions on Antennas and Propagation, 2015, 63(12): 5908-5913.

DOI：10.1109/TAP.2015.2484420

• Antenna-in-package (AiP)
• antenna gain
• 60-GHz WiGig standard
• lens antennas
• millimeter-wave (MmW) antennas

The design of a micromachined polyethylene lens for WiGig modules is described and its electromagnetic characteristics are measured. The lens is electromagnetically fed by linearly polarized Tx and Rx patch antennas integrated in an existing ball-grid-array (BGA) organic module. Antennas are separated from each other by a distance of 4.45 mm (0.89 lambda(g) at 60 GHz). The goal of the lens is to increase the gain of each antenna while lowering the beam depointing effect due to their offset position regarding the focal point of the lens. A geometrical optics/physical optics (GO/PO) hybrid method is applied to the design and analysis of the lens shape for noncollimating purpose. Using a lens height of 30 mm for both Tx and Rx antennas, a 13-dBi minimum realized gain from 54 to 66 GHz is obtained. Compared to an elliptical lens providing an equivalent realized gain over the same bandwidth, the depointing angle from the boresight direction is reduced from 15 degrees to 4 degrees. Full-wave simulations are verified by measurements.

• 出版日期2015-12