Aiming at the demand for miniaturized RF front-end for modern communications electronic warfare systems, a 30~3 000 MHz high integration radio frequency front-end module based on LTCC technology has been developed. The size of the module is 48 mm×46 mm×12 mm, and weight is only 68.5 g. Both the volume and weight are reduced to 1/7 of the original product while meeting the technical specifications. The key technologies of high integration such as 3D interconnection and isolation optimization are also summarized and analyzed in this paper.