Heat Dissipation Antenna Array for Compact Massive MIMO Radio Unit

A new passive air cooling system with a heat dissipation antenna array to dissipate large amounts of heat from massive multiple-input multiple-output (MIMO) radio units is proposed. The antenna array has a radome with apertures and compact antenna elements as heat sink fins arranged for effective air flow. In thermal simulations, the proposed system achieved about a 1.8-times higher heat dissipation performance per volume than that of conventional passive air cooling system and a 1/1.8 miniaturization of radio unit volume, which is dependent on heat sink size.