3G 4G GSM antenna

　　3G, 4G, and GSM antennas are devices used to support corresponding mobile communication technologies. The following is a related introduction:

　　3G 4G GSM antenna Technical features

　　GSM antenna 2-band characteristics: GSM antennas mainly work in the 900MHz and 1800MHz bands. The 900MHz band has a longer wavelength and strong diffraction ability. It can cover areas where signals are difficult to reach, such as complex terrains such as behind large buildings and valleys, and can stably transmit voice signals. The 1800MHz band has advantages in data transmission, with a larger amount of data transmitted per unit time, and is suitable for areas with concentrated communication needs such as bustling commercial areas in cities.

　　Functional features: Mainly used to realize voice communication and basic data transmission, such as SMS services, etc., it is the main communication antenna technology in the 2G era.

　　3G antenna

　　Multi-band support: 3G networks use broadband digital technology, and 3G antennas need to support multiple bands to meet the coexistence requirements of different communication systems (such as WCDMA, CDMA2000, TD-SCDMA, etc.) and realize new functions such as video calls.

　　Smart antenna technology: Introducing smart antenna technology, beamforming is achieved through digital signal processing algorithms, which can improve system capacity and coverage performance. It can dynamically adjust the beam direction and enhance signal quality according to the user's location and signal environment.

　　4G antenna

　　MIMO technology application: 4G network adopts OFDMA and MIMO technology. 4G antennas are mostly dual-polarized antennas, supporting simultaneous transmission of multiple frequency bands and multiple spatial channels. MIMO technology has developed the antenna system from a single antenna to an array antenna and multiple antennas, improving data throughput and communication stability.

　　High-speed data transmission: It can support higher data transmission rates to meet users' needs for high-traffic data services such as high-definition video playback, online games, and high-speed file downloads.

　　3G 4G GSM antenna type

　　Omnidirectional antenna: It radiates and receives signals uniformly at 360° in the horizontal direction, so that devices in all directions around it can receive relatively uniform signal strength. It is suitable for places that require all-round coverage, such as squares, rural areas, etc., and can provide communication services for a large number of scattered mobile devices.

　　Directional antenna: It has strong directivity, and the signal is concentrated in a specific direction for transmission and reception. The transmission distance in this direction is longer and the signal strength is stronger. It is often used in point-to-point or point-to-multipoint communication scenarios, such as signal transmission between base stations, or for covering areas in a specific direction, such as highways and railways.

　　Smart antenna: It can automatically adjust the antenna's directional pattern and gain through adaptive algorithms and signal processing technology to adapt to different signal environments and user distributions. It is mainly used on the base station side to improve network performance and coverage quality.

　　3G 4G GSM antenna Application scenarios

　　Base station communication: In mobile communication base stations, different antennas are selected according to the base station type and coverage requirements. Macro base stations usually use high-gain directional antennas to achieve long-distance coverage; micro base stations and indoor distribution systems mostly use omnidirectional antennas or low-gain directional antennas for indoor or small-area signal coverage.

　　Mobile terminal: In mobile devices such as mobile phones and tablets, the built-in 3G, 4G, and GSM antennas enable the device to connect to the corresponding network to achieve voice calls, data transmission, Internet access and other functions.

　　Internet of Things devices: used for various types of Internet of Things devices, such as smart electricity meters, smart security equipment, industrial sensors, etc., to achieve remote communication and data transmission between devices, and support the operation and management of the Internet of Things system.