The TOXU GPS + WiFi Active Antenna is a multi-band device designed to handle GNSS, 4G LTE, and WiFi signals simultaneously, making it a versatile choice for modern vehicles. Its design incorporates several key components that work in harmony to ensure optimal signal reception, amplification, and transmission:
Multi-Band Antenna Elements: The antenna features dedicated elements for GNSS (GPS, Glonass, BeiDou), 4G LTE, and WiFi, each tuned to their respective frequency ranges. The GNSS element, typically made from high-performance ceramic, is optimized to capture signals in the 1561 MHz (BeiDou) and 1575 MHz (GPS/Glonass) bands, ensuring accurate positioning. The 4G LTE elements are designed for the 824~960 MHz and 1710~2690 MHz bands, supporting reliable mobile data connectivity, while the WiFi elements handle the 2400~2500 MHz band for wireless local area network access.
Low-Noise Amplifiers (LNAs): As an active antenna, it integrates LNAs for each signal type to amplify weak incoming signals. The LNAs are strategically placed close to the antenna elements to minimize signal loss, ensuring that even faint GNSS signals or distant 4G/WiFi transmissions are boosted without introducing significant noise. This is crucial for maintaining a high signal-to-noise ratio (SNR), which directly impacts positioning accuracy and data transfer speeds.
Band-Pass Filters: To prevent interference between different frequency bands, the antenna incorporates band-pass filters for each signal type. These filters suppress unwanted signals outside the target frequency ranges, ensuring that GNSS, 4G LTE, and WiFi signals do not interfere with one another. For example, the WiFi filter blocks LTE or GNSS signals from entering the WiFi circuit, and vice versa, preserving signal integrity across all bands.
Connectors: The antenna offers versatile connectivity options with SMA, FAKRA, and MCX connectors, allowing seamless integration with various vehicle systems. SMA connectors are widely used in RF applications for their robustness and ease of use, while FAKRA connectors are a standard in automotive environments, known for their secure locking mechanism and color-coded design to prevent incorrect installation. MCX connectors, being smaller, are ideal for space-constrained installations. This variety ensures compatibility with a wide range of GPS receivers, 4G modems, and WiFi routers commonly found in vehicles.
Housing: The antenna is encased in a durable black housing, constructed from high-grade materials such as ABS (Acrylonitrile Butadiene Styrene) or polycarbonate. This housing protects internal components from environmental factors like dust, moisture, UV radiation, and temperature fluctuations, ensuring long-term reliability. The black color also helps the antenna blend discreetly with vehicle exteriors or interiors, maintaining aesthetic appeal.
Coaxial Cable: The antenna is equipped with a 3-meter RG174 coaxial cable, chosen for its flexibility, compact size, and effective shielding. RG174 is well-suited for automotive applications, as it minimizes signal loss over moderate distances and resists interference from other electrical components in the vehicle. The 3-meter length provides sufficient flexibility for installation, allowing the antenna to be mounted in an optimal location (such as the roof or windshield) while connecting to receivers inside the vehicle.
These components collectively enable the TOXU GPS + WiFi Active Antenna to handle multiple signals efficiently, making it a comprehensive solution for connected vehicles.
Technical Specifications
The performance of the TOXU GPS + WiFi Active Antenna is defined by a set of technical specifications that underscore its capabilities and suitability for automotive applications:
Frequency Range:
GNSS: 1561 MHz (BeiDou), 1575 MHz (GPS/Glonass)
4G LTE: 824~960 MHz, 1710~2690 MHz
WiFi: 2400~2500 MHz
This broad range ensures compatibility with global navigation systems and major cellular and wireless standards, making the antenna suitable for use in diverse geographic regions.
Gain: 28 dBi (typical for GNSS). This high gain is critical for amplifying weak GNSS signals, enabling accurate positioning even in challenging environments such as urban canyons or under dense foliage. The 4G LTE and WiFi sections also feature optimized gain levels to ensure reliable data transmission and reception.
VSWR (Voltage Standing Wave Ratio): ≤ 2.0 across all bands. A VSWR of 2.0 or lower indicates efficient power transfer between the antenna and connected devices, minimizing signal reflection and ensuring that most of the received signal is transmitted to the receiver.
Polarization: RHCP (Right-Hand Circular Polarization) for GNSS, and linear polarization for 4G LTE and WiFi. RHCP matches the polarization of GNSS satellites, maximizing signal reception, while linear polarization is optimal for 4G and WiFi signals, which are typically transmitted with linear polarization.
Connectors: SMA, FAKRA, MCX. This versatility allows the antenna to be connected to a wide range of receivers, modems, and routers without the need for adapters, simplifying installation.
Cable: 3-meter RG174 coaxial cable. RG174 offers low signal loss and flexibility, making it ideal for routing through vehicle interiors or exteriors.
Color: Black. The sleek black housing ensures the antenna blends with vehicle aesthetics, whether mounted externally or internally.
Operating Temperature Range: While not explicitly specified, TOXU antennas are designed to operate within typical automotive temperature ranges (e.g., -40°C to +85°C), ensuring performance in extreme hot and cold conditions.
These specifications highlight the antenna’s ability to deliver consistent performance across multiple bands, making it a reliable choice for connected vehicles.
The TOXU GPS + WiFi Active Antenna offers several key advantages that set it apart from single-band or passive antennas:
Multi-Band Support: By handling GNSS, 4G LTE, and WiFi signals, the antenna eliminates the need for multiple separate antennas, reducing installation complexity and saving space in the vehicle. This integration is particularly valuable in modern cars, where dashboard and roof space is at a premium due to other sensors and communication devices.
Active Amplification: The inclusion of LNAs ensures that weak signals are amplified, enhancing performance in areas with poor coverage. For example, in urban canyons where GNSS signals are blocked by tall buildings, the high gain (28 dBi) helps capture and amplify residual signals, maintaining positioning accuracy. Similarly, in remote areas with weak 4G signals, the LTE amplifiers ensure reliable data connectivity.
Reduced Interference: The integrated band-pass filters prevent cross-talk between different frequency bands, ensuring that GNSS signals are not disrupted by 4G or WiFi transmissions, and vice versa. This is crucial for maintaining signal integrity, especially in crowded RF environments where multiple wireless systems operate simultaneously.
Versatile Connectivity: With SMA, FAKRA, and MCX connectors, the antenna can be easily integrated into various vehicle systems, regardless of the manufacturer’s preferred connector type. This flexibility reduces installation time and ensures compatibility with both new and existing vehicles.
Durable Design: The robust housing and high-quality materials ensure the antenna withstands the rigors of automotive use, including vibrations, temperature extremes, and exposure to moisture or dust. This durability translates to a longer service life, reducing the need for replacements and maintenance.
Aesthetic Appeal: The black housing allows the antenna to blend discreetly with the vehicle’s design, whether mounted on the roof, windshield, or dashboard. This is a significant advantage for consumers and fleet operators who prioritize a clean, uncluttered appearance.
These advantages make the TOXU GPS + WiFi Active Antenna a comprehensive solution for vehicles requiring both reliable navigation and seamless connectivity.
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The TOXU GPS + WiFi Active Antenna is designed primarily for automotive applications but can also be used in other settings where multi-band connectivity is required. Its key applications include:
Passenger Vehicles: In modern cars, the antenna supports in-dash navigation systems by providing accurate GNSS data, enabling features like real-time traffic updates, turn-by-turn directions, and lane guidance. 同时，its 4G LTE and WiFi capabilities facilitate in-car internet access, allowing passengers to stream media, browse the web, or connect to smart home devices. The antenna also supports over-the-air (OTA) updates for vehicle software, ensuring the car’s systems remain up-to-date with the latest features and security patches.
Fleet Management: For commercial fleets (trucks, delivery vans, taxis), the antenna is a critical component of telematics systems. It provides real-time GPS tracking, allowing fleet managers to monitor vehicle locations, optimize routes, and improve fuel efficiency. The 4G LTE connectivity enables the transmission of vehicle diagnostics, driver behavior data, and delivery status updates to a central server, enhancing operational efficiency and accountability. WiFi support allows drivers to access job schedules or delivery instructions directly from the vehicle.
Emergency Services Vehicles: Ambulances, police cars, and fire trucks rely on accurate navigation and reliable communication to respond quickly to emergencies. The TOXU antenna ensures these vehicles maintain GNSS connectivity even in urban areas or remote locations, while 4G LTE enables secure communication with dispatch centers. WiFi can be used to connect on-board medical equipment or laptops, facilitating data sharing during emergencies.
Recreational Vehicles (RVs) and Boats: RVs and boats require robust navigation and connectivity for long trips. The antenna’s multi-band support allows travelers to navigate using GNSS, stay connected via 4G LTE in remote areas, and use WiFi to connect devices within the vehicle or boat. Its durable design makes it suitable for marine environments, where exposure to moisture and saltwater is common.
Industrial Vehicles: Construction equipment, agricultural machinery, and mining vehicles use GNSS for precision positioning, enabling tasks like automated grading, crop mapping, or mine surveying. The TOXU antenna provides the high-accuracy GNSS data required for these applications, while 4G LTE allows for remote monitoring and control of equipment. WiFi can connect on-board sensors and cameras, facilitating real-time data analysis.
These applications demonstrate the antenna’s versatility, making it a valuable tool in diverse industries where navigation and connectivity are critical.
Installation and Maintenance Guidelines
Proper installation and maintenance are essential to ensure the TOXU GPS + WiFi Active Antenna performs optimally:
Mounting Location: The antenna should be mounted in a location with a clear view of the sky to maximize GNSS signal reception. For vehicles, this typically means mounting it on the roof, near the windshield, or on the dashboard. Avoid mounting it near large metal objects, which can block or reflect signals, or near sources of electromagnetic interference (EMI) such as engines, alternators, or other RF devices.
Orientation: For GNSS performance, the antenna should be mounted horizontally to ensure the RHCP element aligns with satellite signals. While linear polarization for 4G and WiFi is less sensitive to orientation, positioning the antenna vertically can enhance LTE signal reception in some cases.
Cable Routing: The 3-meter RG174 cable should be routed to avoid sharp bends, which can degrade signal quality. Keep the cable away from EMI sources and secure it with clips or ties to prevent movement, which can cause wear over time. Ensure the cable connector is properly seated and tightened to avoid signal loss.
Weatherproofing: If mounted externally, ensure the antenna’s housing and cable connections are weatherproofed. Use waterproof sealants or covers for connectors to prevent moisture ingress, which can damage internal components.
Regular Inspection: Periodically check the antenna and cable for damage, such as cracks in the housing, frayed cables, or loose connectors. Clean the antenna surface to remove dirt, snow, or debris that could block signals. Inspect the cable for signs of wear, especially at connection points, and replace it if necessary.
Power Supply: Ensure the antenna receives the correct voltage (typically 3-5V DC) from the connected device or a dedicated power supply. Overvoltage can damage the LNAs, while undervoltage can reduce amplification, leading to poor performance.
By following these guidelines, users can ensure the antenna operates at peak performance, providing reliable navigation and connectivity over its service life.
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