丨 Product Introduction
This product AK521 supports L1/L5 dual frequency bands, using high-performance ceramic media and optimized radiation structure, providing excellent multi frequency satellite signal reception capability. Suitable for high-precision positioning, navigation, surveying and other professional fields, meeting the application needs of drones, intelligent driving, precision agriculture and other fields.
characteristic:1. Dual frequency positioning: supports GPS L1/L5+Beidou B1/B2, and is resistant to multipath interference
2. High precision: Ceramic medium design, stable and reliable signal
3. Compact design: ultra small size, easy to carry and install
4. Low power consumption: 3-5V power supply, power consumption<25mA
丨 Specification parameters
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Specification parameters
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Antenna
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1
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Antenna model
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GNSS Antenna
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2
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Ceramics Size (mm)
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25*25*2/18*18*2
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3
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Nominal frequency
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GPS: L1：1575.42±1.023MHz，
L5：1176.45±1.023MHz
GLONASS: L1:1602+0.5625*K(MHz)
BDS: B1 1561±1.023MHz
GALILEO: E1: 1575
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5
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Gain (Peak gain on70*70mm Ground Plane facing Zenith.)
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L1:3±1dBi L5:2±1dBi
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6
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V.S.W.R
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≤2
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7
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-10dB Bandwidth MHz min
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10min
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8
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impedance
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50Ω
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9
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Polarization
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RHCP
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10
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Frequency Temperature Coefficient
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20ppm/deg.℃ max
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LNA
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|
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1
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Gain
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L1:20±2dBi L5:18±2dBi
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2
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Noise coefficient
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<1dB
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3
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Input V.S.W.R
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<2.0
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4
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Output V.S.W.R
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<2.0
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5
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Voltage
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DC 3~5V
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|
6
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Current
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15~25mA
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|
7
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Impedance
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50Ω
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|
Physical
parameters
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1
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Size
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25*7mm
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2
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weight
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10.8g
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3
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Line type
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RG1.13(Customizable)
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4
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Line Length
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L=65mm(Customizable)
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5
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Linear interface
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IPEX(Customizable)
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6
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Antenna
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ceramics
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|
7
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pcb
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FR4
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Environmental
characteristics
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1
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Working Temp
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-40℃～+85℃, 10%～95% RH
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|
2
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Storage Temp
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-55℃～+100℃, 10%～95% RH
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|
3
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Vibration
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Sine sweep @1.5mmAM
10~55Hz each Axis
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Packaging and Delivery：
DALANG AK521 High-Precision GNSS Antenna
The DALANG AK521 is an ultra-compact GNSS antenna specifically designed for drone and agricultural applications, supporting multi-system dual-frequency navigation including GPS L1/L5, BDS B1, GLONASS L1, and Galileo E1. Featuring a 25×7mm stacked ceramic design with high-gain low-noise amplifier, it delivers stable and reliable high-precision positioning performance in complex environments, making it an ideal antenna solution for space-constrained devices.
Dual-Frequency High-Precision Positioning Performance
Supporting L1/L5 dual-frequency bands with 20±2dB gain and <1dB noise figure, the antenna significantly improves signal reception quality and anti-multipath interference capability, providing continuous and stable centimeter-level positioning data for drone navigation and agricultural operations.
Ultra-Compact Design for Easy Integration
With an ultra-small size of just 25×7mm and lightweight design of 10.8g, it supports IPEX interfaces and customizable cables, allowing flexible integration into various compact devices, perfectly suited for drones, portable surveying equipment, and agricultural IoT terminals.
Industrial-Grade Environmental Adaptability
Featuring an operating temperature range of -40℃ to +85℃ and excellent vibration resistance, coupled with RoHS environmental certification, it ensures long-term stable operation in harsh outdoor environments.
Product Advantages
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Dual-Frequency Multi-System Compatibility
Comprehensive support for four major satellite systems and L1/L5 dual bands, significantly improving positioning accuracy and reliability
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High Gain and Low Noise Design
Optimized RF front-end and stacked ceramic technology ensure excellent signal quality even in weak signal environments
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Ultra-Compact Structure
Extremely compact size and lightweight design provide high-performance antenna solutions for space-sensitive devices
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Industrial-Grade Durability
Wide temperature design and strong vibration resistance adapt to demanding working environments of mobile platforms like drones and agricultural machinery
Looking for a high-performance GNSS antenna for your drone or agricultural system? DALANG AK521 delivers professional-grade positioning performance with ultra-compact design!
About Us
DALANG is a dedicated manufacturer of high-performance GNSS modules and RTK positioning solutions, serving industries such as UAV navigation, precision agriculture, and geospatial mapping. With a clear focus on accuracy, reliability, and integration flexibility, we support both standard and custom applications across global markets. Our product lines are engineered to meet the evolving demands of real-time positioning with support for multiple GNSS constellations, including GPS, GLONASS, BDS, and Galileo.
Our production facility spans 2,500㎡ and includes advanced SMT lines, in-house R&D labs, and full functional testing for every unit shipped. With a team of 30+ GNSS engineers, we design and manufacture over 200,000 GNSS receivers and modules annually. Certified to ISO9001:2015, and compliant with CE and RoHS standards, we follow a strict quality assurance process from prototyping through mass production. We also provide firmware updates, system integration support, and full lifecycle product documentation.
Trusted by partners in over 30 countries, DALANG delivers fast, scalable manufacturing with personalized technical support. Our streamlined collaboration model—covering inquiry, consultation, prototyping, and delivery—ensures efficiency from first contact to deployment. Whether you're sourcing off-the-shelf GNSS hardware or launching a customized solution, DALANG is your dependable partner for accurate, cost-effective positioning systems.
FAQ
1. Who are we?
We are DALANG, a specialized manufacturer of GNSS modules and RTK positioning systems based in China, with a focus on high-precision solutions for UAVs, surveying, and smart agriculture.
2. How can we guarantee quality?
All products undergo strict multi-stage quality control, including SMT production, functional testing, and 100% final inspection. We are ISO9001:2015 certified and follow international compliance standards such as CE and RoHS.
3. What can you buy from us?
You can purchase GNSS receivers, RTK modules, base stations, antennas, flight control positioning systems, and other GNSS-related components and accessories.
4. Why should you buy from us not from other suppliers?
We combine strong in-house R&D, flexible OEM/ODM support, industrial-grade quality assurance, and fast global delivery. Our expertise in GNSS RTK ensures stable, accurate, and scalable solutions tailored to your specific use case.
5. What services can we provide?
We offer OEM/ODM customization, technical consulting, firmware support, prototyping, and global after-sales service. Our team works closely with international clients to ensure efficient communication and long-term support.
