Integrated design of X-band phased array antenna with LTCC 3D T/R module

Abstract

In this paper, a novel design scheme of X-band phased array antenna is introduced. The antenna array is mainly composed of the 3D T/R module, which is based on LTCC technology, and the slotted waveguide antenna. The whole system adopts the vertical interconnected three-dimensional multi-layer technology for the spaceborne synthetic aperture radar (SAR) system. 3D T/R module greatly improves the integration of the system by assembling different multifunctional chips into a complete multi-layer LTCC substrate. The slotted waveguide antenna is connected vertically with the T/R module, the power divider, etc, implementing the integrated design. The test results of the antenna system show that the phased array antenna has a good performance in terms of gain, radiating patterns and so on, which provides a new idea for the integrated design of the phased array antenna.