Dual-band circular polarized antenna for Beidou

　　Dual-Band Circular Polarized Antenna: Optimized for Beidou Navigation System (BDS)

　　As the Beidou Navigation System (BDS) accelerates its global service coverage, high-performance BDS-compatible antennas have become a core component for terminal devices in fields such as precision positioning, intelligent transportation, and geographic mapping. Our Dual-Band Circular Polarized Antenna is exclusively optimized for BDS’s key working bands, integrating dual-band signal reception and circular polarization anti-interference capabilities to deliver stable, high-precision positioning performance—ideal for global clients developing BDS-based terminal products.

　　1. Core Advantages: Tailored for Beidou’s Performance Requirements

　　① Dual-Band Coverage: Lock onto BDS Signals Precisely

　　Targeted Band Design: Supports BDS’s mainstream working bands (B1: 1561.098MHz, B2: 1207.14MHz) as standard, with optional compatibility for B3 band (1268.52MHz) to meet diverse precision needs (e.g., B1/B2 for general positioning, B1/B2/B3 for centimeter-level high-precision applications).

　　Dual-Band Synergy: Simultaneous reception of two BDS bands reduces signal loss caused by single-band interference, improving positioning accuracy by ≥40% compared to single-band antennas—critical for scenarios like agricultural machinery navigation and surveying and mapping.

　　Multi-System Compatibility: While optimized for BDS, it also supports GPS (L1/L2) and GLONASS (G1/G2) dual bands, enabling multi-constellation fusion positioning to enhance signal availability in complex environments (e.g., urban canyons, dense forests).

　　② Circular Polarization: Enhance Anti-Interference & Signal Stability

　　Strong Anti-Multipath Interference: Circular polarization effectively suppresses multipath signals (e.g., reflections from buildings, ground, or water surfaces), a common issue in BDS positioning—ensuring stable signal reception even in urban or coastal areas.

　　Low Axial Ratio (AR): AR ≤2.0dB across the entire BDS working band, ensuring consistent polarization matching with BDS satellites’ circularly polarized signals, minimizing signal attenuation and improving positioning continuity.

　　Wide Beamwidth: Azimuth beamwidth ≥120° and elevation beamwidth ≥90°, covering more BDS satellites simultaneously (supports tracking of 8+ satellites at once) to reduce positioning drift.

　　2. Key Technical Parameters: Meet BDS Industry Standards

　　Working Bands: Standard B1 (1559.052-1563.144MHz) & B2 (1202.025-1210.025MHz); optional B3 (1260.0-1270.0MHz) for high-precision scenarios, fully compatible with BDS-2 and BDS-3 systems.

　　Gain: ≥3dBi (B1 band), ≥2.5dBi (B2 band); high gain ensures weak signal reception in remote areas (e.g., mountainous regions, deserts) where BDS satellite signals are easily attenuated.

　　Noise Figure: ≤1.5dB, reducing signal-to-noise ratio loss and ensuring high-quality signal input for BDS receivers, laying the foundation for high-precision positioning.

　　Polarization Isolation: ≥30dB, minimizing crosstalk between BDS bands and external signals (e.g., 4G/5G communication signals) to avoid positioning errors.

　　Environmental Resistance: Operating temperature -40℃~85℃, waterproof grade IP67, dustproof and shockproof (compliant with IEC 60068-2-27), adapting to outdoor harsh environments such as field surveying and marine navigation.

　　Certification: Compliant with CE, FCC, RoHS, and BDS-3 terminal accessory technical specifications, ensuring smooth market access in Europe, America, Asia, and other regions.

　　3. Application Scenarios: Full Coverage of BDS Terminal Products

　　Our dual-band circular polarized antenna is widely applicable to BDS-based terminal devices, helping clients optimize product performance:

　　Precision Surveying & Mapping: Compatible with GNSS receivers, supporting centimeter-level positioning for land surveying, road construction, and geological exploration.

　　Intelligent Vehicle Navigation: Integrated into automotive BDS navigation systems, providing stable positioning for adaptive cruise control (ACC) and lane-level navigation in urban traffic.

　　Agricultural Intelligent Machinery: Adapted to agricultural drones and self-driving tractors, enabling precise operation (e.g., seeding, fertilization) based on BDS high-precision positioning.

　　Marine & Aviation Navigation: Installed on ships and general aviation aircraft, ensuring continuous positioning in open seas and remote airspace where signal conditions are complex.

　　Internet of Things (IoT): Used in asset tracking terminals (e.g., container tracking, logistics vehicles), providing real-time, high-precision location data for IoT platforms.

　　4. Why Choose Our BDS Antennas?

　　BDS-Specific Optimization: R&D team with 8+ years of BDS antenna development experience, focusing on signal matching and interference suppression for BDS bands—unlike universal GNSS antennas, it delivers better BDS performance.

　　Customization Capabilities: Provide tailored designs based on client terminal size (e.g., miniaturized for wearable trackers), installation form (e.g., adhesive, screw-mounted), and performance requirements; sample development can be completed within 5 working days.

　　Stable Mass Production: 3 production bases (China, Thailand, Mexico) with a monthly capacity of 800,000 units, supporting bulk order delivery in 12-18 working days and localized after-sales service in major regions.

　　Technical Support: Offer pre-integration testing (e.g., antenna-receiver matching testing) and post-sales debugging guidance, helping clients solve BDS signal reception issues quickly.

　　5. Target Clients & Cooperation Models

　　Target Clients

　　BDS terminal manufacturers (e.g., GNSS receiver producers, automotive navigation device suppliers)

　　Surveying and mapping equipment companies

　　Agricultural machinery and drone manufacturers

　　Marine and aviation electronic equipment suppliers

　　IoT asset tracking solution providers

　　Cooperation Models

　　Customized antenna development (based on BDS terminal specifications)

　　Bulk supply of standard antennas (long-term stable cooperation)

　　Joint R&D of high-precision BDS terminal accessories (e.g., for BDS-3 high-precision applications)