Eahison 5G high density and precise coverage scenario solution

5G Antenna Technology DevelopmentUntitled Part 1

5G communication, the key to achieving high speed is millimeter wave and beam-forming technology, but the traditional antenna obviously cannot meet this demand.

The first generation of mobile communications used almost all omni directional antennas. At that time, the number of users was small and the transmission rate was low. At this time, it was also an analog system.

The second generation of mobile communication technology, we entered the cellular era. The antenna at this stage has gradually evolved into a directional antenna, and the general lobe width includes 60° and 90° and 120°. Taking 120° as an example, it has three sectors.

The antennas of the 1980s were mainly dominated by single-polarized antennas, and the concept of arrays has begun to be introduced. Although omni directional antennas also have arrays, they are only vertical arrays, and single-polarized antennas have planar and directional antennas. In terms of form, the current antenna is very similar to the second generation antenna.

In 1997, dual-polarized antennas (±45° cross-multi-polarized antennas) began to enter the historical arena. At this time, the performance of the antenna has been greatly improved compared with the previous generation. Whether it is 3G or 4G, the main trend is a dual-polarized antenna. In the 2.5G and 3G era, many multi-band antennas appeared. Because the system at this time is very complicated, such as GSM, CDMA, etc. need to coexist, multi-band antenna is an inevitable trend. In order to reduce costs and space, multi-band has become the mainstream at this stage. By 2013, we introduced the MIMO (Multiple-Input Multiple-Output) antenna system for the first time. Originally a 4x4 MIMO antenna. MIMO technology has increased communication capacity, and the antenna system has entered a new era, from the original single antenna to the array antenna and multiple antennas.