RF connector is a kind of connecting device in RF transmission system, which can transmit RF signal with small loss and reflection, and provide fast and repeated connection. It is mainly composed of contact, insulator, shell and accessories.

With the rapid development of science and technology, the application scope of electronic equipment is becoming more and more extensive, which has penetrated into almost all departments of the national economy, including public security, communication, medical and other fields. Therefore, the reliability of electronic equipment has attracted more and more attention.

This paper mainly introduces some passive components on the communication link, and introduces the appearance, function, type, main technical index definition and scope of components.

1G realizes mobile call, 2G realizes SMS, digital voice and mobile Internet access, 3G brings picture based mobile Internet, and 4G promotes the development of mobile video. 5g network is regarded as the basis for the interconnection of things, vehicles and other things in the future.

Xie Cun, director of the information and Communication Development Department of the Ministry of industry and information technology, said on the 16th that at present, China has built more than 1.15 million 5g base stations, accounting for more than 70% of the world. It is the largest and most technologically advanced 5g independent networking network in the world. 5g network coverage has been realized in all prefecture level cities, more than 97% of County cities and 40% of township towns and townships in China; 5g end users reached 450 million, accounting for more than 80% of the world.

With the rise of the digital age, the number of WiFi sources transmitting information wirelessly between devices is increasing exponentially. This makes the 2.4GHz RF used by WiFi widely used. But when people do not use WiFi to access the Internet, they are inactive, resulting in a huge waste of signal resources.

In 1956, when McCarthy of Stanford University proposed "artificial intelligence", he certainly did not expect that this concept would be in full swing in China decades later. Artificial intelligence is not only expected to trigger a new industrial revolution, but also integrated into everyone's daily life, and is triggering social change.

Recently, the Ministry of industry and information technology issued the "14th five year plan" for the development of information and communication industry (hereinafter referred to as the "plan"). The plan includes 4 parts, 26 development priorities and nearly 30000 words. It depicts the development blueprint of the information and communication industry. It is a guiding document for accelerating the construction of a network power and digital China, promoting the high-quality development of the information and communication industry, guiding the behavior of market subjects and allocating government public resources in the next five years.