On September 27, the commercial satellite enterprise Beijing Jiutian Weixing Technology Development Co., Ltd. (hereinafter referred to as "Jiutian Weixing") released a new generation of spaceborne multi beam phased array antenna at the launch and promotion conference of new technologies and new products of 2021 Zhongguancun forum < p > multi beam phased array is one of the core technologies of 5g satellite communication system. With the development of 5g technology and advanced chip technology, more and more satellites will adopt phased array antenna. It is worth noting that there is no on orbit high flux satellite equipped with multi beam phased array antenna in China < p > multi beam phased array antenna technology is very important for 5g satellite, radar satellite and even satellite terminal. Taking 5g satellite as an example, it needs to cover a large area in the process of high-speed movement, which requires the antenna to have the ability of multi beam simultaneous operation and fast switching direction. At present, the multi beam antennas commonly used in communication satellites mainly include paraboloid antenna and waveguide slot array antenna. The control implementation is complex, and the beam pointing switching depends on servo mechanism, so it is difficult to achieve fast switching < p > by means of digital control, the multi beam phased array antenna enables the antenna system to receive or transmit wireless signals from different directions at the same time. Compared with the traditional antenna, the beam switching speed is significantly improved, the service life is longer and the weight is lighter. By serving users in multiple directions at the same time, multi beam digital phased array can double the communication capacity of satellites < p > in China's satellite Internet industry chain, multi beam phased array antenna is of strategic significance to optimize the supply chain of commercial satellites and terminal products, reduce the infrastructure cost of Satellite Internet, and lead the integrated development of heaven and earth Internet technology < p > < p > Jiutian microsatellite, founded in 2015, is a domestic microsatellite whole industry chain service provider, providing government and enterprise customers with commercial satellite customization, constellation core services, industry terminal applications and Aerospace Science and education systems. The company is committed to technology research and development and product design for the 6G era, and promotes the integrated development of ground network and satellite network < p > in 2018, nine day microsatellites were launched twice, with a total of 8 satellites, all of which were successfully operated in orbit, and took the lead in realizing the design, development and in orbit verification of 100kg satellites. Since 2019, the company has participated in the construction of new national satellite Internet infrastructure on behalf of private enterprises. In 2021, the first private satellite factory approved by the national development and Reform Commission will complete the construction of phase I project and enter the stage of comprehensive commissioning of workshop production line equipment. (quiet)