5G is poised to bring more integrated and sophisticated antenna and circuit modules to the modern defense and commercial electronics markets. For example, Fig. 1 shows the type of antenna module that is now being prototyped by manufacturers like IBM and Ericsson. This 28-GHz 5G antenna module is a 2.8 × 2.8 in, 8 × 8 patch array with 64-dual polarized elements and four monolithic microwave integrated circuits (MMICs) using a silicon-germanium (SiGe) process.
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