Radio frequency connector is also called RF connector. Radio frequency is radio frequency current. It is a short name for high frequency AC change electromagnetic wave. A change of less than 1,000 times per second is called a low-frequency current, and a change of more than 10,000 times is called a high-frequency current. Radio frequency is such a high-frequency current.

In theory, there is electronics. When a current flows through this conductor, a magnetic field is formed around the conductor. An alternating current passes through this conductor, and an alternating electromagnetic field is formed around the conductor. The magnetic field lines around the magnet are from the N level, and then enter the S pole, and the magnetic field lines inside the magnet go from the S pole to the N pole. Each magnetic field must have two levels of N and S. The magnetic field is the continuously changing N and S), we call it electromagnetic waves. When the frequency of this electromagnetic wave is higher than 100kHz, the electromagnetic wave can propagate in the air and be reflected by the ionosphere of the external aid of the atmosphere, thereby forming the ability of long-distance transmission. We call this high-frequency electromagnetic wave with this ability a radio frequency This RF technology is mainly used in the field of wireless communications (such as cable television systems).

RF connector

The most basic RF consists of three parts: a tag (radio frequency card), a reader, and an antenna.

Classification and application of radio frequency:

1. Low frequency-working efficiency is less than 30MHz, commonly used and common working frequencies are 125KHz, 225KHz and 13.56MHz;

2. High frequency-working efficiency is greater than 400MHz, the common working frequencies are 915MHz, 2450MHz, 5800MHz;

3. Very high frequency-working efficiency between 30MHz to 300MHz, working frequency between 118 to 152.975MHz.

The application of radio frequency (RF) has been quite extensive. According to statistics, the size of the RF market will reach 41.43 billion US dollars by 2023. It can be said without any hesitation that the RF technology market has huge business opportunities. RF is about to be a new economic growth in the future point.

Common applications are: ①Applications in the logistics industry: RF technology is mainly used in the field of logistics and supply chain. This can not only solve the losses caused by the supply chain being mixed, theft and retail stock out, but also improve the efficiency and accuracy of logistics. , Reduce logistics costs and other issues. So far, the logistics supply chain has become the main application industry of RFID development technology. The specific application directions of RF technology in the logistics industry are: logistics information industry, transportation industry, packaging industry, processing and distribution industry, warehouse storage industry, etc .; ②Automatic toll collection at highway toll stations: Automatic toll collection systems for highways are the most successful of RF technology Application one. The development of China's expressways is very fast, and it also brings many problems, such as traffic congestion and easy traffic jams, which will cause long queues behind toll stations; in addition, there are many illegal toll collectors who are embezzling tolls. As a result, the state loses a lot of fiscal revenue. At this time, the RF radio frequency identification system came to the rescue site. He could let the vehicle pass through the toll station at high speed and complete the toll, saving time and solving the above two problems (traffic congestion and toll supervision) at the same time.