High-Precision Positioning Ceramic Antenna is an antenna specially designed for global navigation satellite system (GNSS) applications that require high sensitivity and high precision. This type of antenna is usually used in the receiving terminal of satellite navigation systems such as GPS, GLONASS, Galileo, BeiDou, etc. to ensure accurate location information in various environments. The following is the key information about high-precision positioning ceramic antenna:
Main features
High gain and low noise:
Adopting optimized ceramic materials and structural design, it provides higher antenna gain while maintaining a low noise factor, thereby improving the quality of signal reception.
Wideband coverage:
Supports multiple GNSS frequency bands, such as L1, L2, L5, etc., and is compatible with a variety of satellite navigation systems to meet the needs of multi-constellation joint positioning.
Omnidirectional radiation pattern:
It has a nearly uniform 360-degree radiation characteristic in the horizontal direction, ensuring that stable signals can be received in all directions around.
Miniaturization and lightweight:
Made using advanced microwave ceramic technology, it is small in size and light in weight, and is easy to integrate into portable devices or mobile platforms.
Excellent electrical performance:
Provides stable standing wave ratio (VSWR), low insertion loss and other excellent RF indicators, ensuring good signal transmission efficiency.
Mechanical strength and weather resistance:
The shell is usually made of sturdy and durable materials, with good vibration resistance and protection level, suitable for long-term use outdoors or in harsh environments.
Multilayer ceramic chip (MLC) technology:
The use of multiple layers of ceramic chips stacked together enhances the electrical performance of the antenna, and different frequency response characteristics can be customized by adjusting the number of layers and shape.
Right-hand circular polarization (RHCP):
Most GNSS satellites transmit right-hand circular polarization signals, so ceramic antennas are also designed as RHCP to maximize signal reception efficiency.
Application areas
Measurement and mapping: used in geographic information systems (GIS), land surveying, construction and other fields, requiring sub-meter or even centimeter-level positioning accuracy.
Autonomous driving vehicles: Provide precise positioning support for unmanned vehicles to ensure safe and reliable driving path planning.
Unmanned aerial vehicles (UAV): used in application scenarios such as aerial photography, logistics distribution, and agricultural monitoring, requiring high-precision navigation and control.
Precision agriculture: Help farmers to carry out precise sowing, fertilization and irrigation to improve agricultural production efficiency.
Public safety and emergency services: For example, radio communication systems used by police and fire departments ensure the effectiveness of on-site command and dispatch.
Intelligent transportation system (ITS): Realize functions such as vehicle monitoring and traffic flow management to improve the level of urban traffic management.
Design and construction
Ceramic dielectric substrate: Made of ceramic materials with high dielectric constant, it can effectively reduce the size of the antenna and improve its electrical performance.
Metal patch or spiral structure: It constitutes the main radiating unit of the antenna, and achieves the required frequency response and polarization characteristics through specific design.
Feed network: The internal circuit is responsible for correctly distributing the input signal to each radiating unit and maintaining the appropriate phase relationship.
Housing and protective cover: Provide physical protection to prevent external factors (such as moisture, dust, impact, etc.) from damaging the internal components of the antenna.
Connector: Equipped with standardized RF connectors (such as SMA, TNC, etc.) for easy docking with other devices.
Selection considerations
Operating frequency: Confirm whether the antenna supports the required GNSS frequency band, especially for multi-constellation positioning systems.
Gain level: Select the appropriate gain value according to the application scenario. Note that too high gain may cause uneven signals in the coverage area.
Physical size: Consider the installation space limitations and select the appropriate size antenna.
Environmental adaptability: If the antenna will be installed outdoors or in special environments, its weather resistance and protection level should be evaluated.
Price and cost-effectiveness: Balance performance and budget, and select the most cost-effective product while meeting technical requirements.
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