“…Because of the good electrical performance and high reliability of ceramic package, early RF systems mostly adopted integration solutions based on ceramic packages [10,11,12,13,14,15,16], but stacked ceramic packages are costly, heavy, and hard to fabricate. Besides, the 3D packaging form based on organic substrates has the disadvantages of poor heat dissipation and low process accuracy although the packaging cost is low [17,18,19,20,21,22,23].…”