Design and simulation of low-orbit satellite broadcast signal receiving and processing terminal spherical crown antenna array

The low-orbit satellite broadcast signal receiving terminal is an important space-based intelligence acquisition and combat command receiving component. The antenna array serves as the first-level module for the receiving terminal to process the received signal. It is responsible for filtering, amplifying the signal, suppressing noise and out-of-band signals. and transmitted to the radio frequency local oscillator board. In the traditional low-orbit reconnaissance satellite reception and processing terminal business process, satellite broadcast signals are difficult to meet the coverage requirements of high-gain and multi-beams. To address this problem, this design is based on HFSS simulation software and uses wide airspace coverage array antenna technology to design the architecture. Based on the characteristics of low-orbit satellite broadcast signal receiving terminals, a 32-element spherical crown array antenna is designed to achieve a reasonable array. Array element architecture selection, array element optimization, and mutual coupling suppression between array elements.