丨 Product Introduction
1. Multi arm spiral: Achieve right-handed circular polarization, optimize signal reception, stabilize phase center, and improve positioning accuracy.
2. Gain characteristics: high gain, low roll off, good reception of low elevation signals, enhanced signal stability and coverage.
3. Amplifier: reduces noise, strong signals, responds to interference environments, and enhances the ability to receive weak signals.
4. Portability: Small size, light weight, easy to carry and install, suitable for mobile deployment.
丨 Specification parameters
|
Specification
|
|
Electrical
Characteristics
|
1
|
Operating Frequency
|
GPS:
L1:1575 .42±1.023MHz.
L2:1227.60±1.023MHz,
L5:1176.45±1.023MHz
BDS:
B1:1561.098+2.046MHz,
B2:1207 .14+2.046MHz.
B3:1268.52+10.23MHz.
GLONASS
L1=1602+0 5625*k(MHz)
L2=1246+0.4375*k(MHz),
GALILE:
E1: 1575.42mhz
E5a:1176.45
E5b:1207.14
E6:1278.75
|
|
2
|
Frequency Range
|
1160-1284/1559-1612MHz
|
|
3
|
V.S.W. R
|
≤2.0
|
|
4
|
Axial Ratio
|
Elevation at 90 degrees: ≤ 3,
Elevation at 15 degrees: ≤ 5
|
|
5
|
Gain
|
Elevation at 90 degrees: ≥ 6 dB,
Elevation at 20 degrees: ≥ 0 dB
|
|
6
|
Front to back Power
|
±60 degrees: ≥ 15 dB
|
|
7
|
Phase Center
|
<2mm
|
|
8
|
Impendence
|
50Ω
|
|
9
|
Polarization
|
RHCP
|
|
10
|
Out-of-Band Suppression
|
1268+100MHZ≥50db,
1170-100MHZ≥50db，
1602+100MHZ≥50db,
1561-100MHZ ≥50db.
|
|
LNA
|
1
|
LNA GAIN
|
38±2dB
|
|
2
|
V.S.W. R
|
＜2
|
|
3
|
Noise Figure
|
＜2.0
|
|
4
|
DC Voltage
|
3.0~16V
|
|
5
|
Current
|
＜35 mA
|
|
Mechanical
Structure
|
1
|
Part Name
|
SPEC
|
|
2
|
Antenna
|
FPC
|
|
3
|
Installation Method
|
Through Connector
|
|
4
|
Antenna Dimensions
|
Φ45.6*40mm
|
|
5
|
Product Weight
|
25.8g
|
|
6
|
Coaxial line
|
RG316
|
|
7
|
Line length
|
L=500mm
|
|
8
|
RF Output Interface
|
SMA-J
|
|
9
|
Antenna Housing
|
ABS+PC
|
|
10
|
PCB Board
|
FR4
|
|
Environmental
Characteristics
|
1
|
Operating Temperature
|
-40℃~+85℃, 10%~95% RH
|
|
2
|
Storage Temperature
|
-40℃~+85℃, 10%~95% RH
|
|
3
|
Humidity
|
Sine sweep
@1.5mmAM 10~55Hz each Axis
|
|
4
|
Vibration Resistance
|
95％ No-condensing
|
丨 product mix
Packaging and Delivery：
Designed for High-Precision Applications — DALANG AK181 High-Precision GNSS Antenna
The DALANG AK181 is a GNSS antenna supporting BeiDou, GPS, GLONASS, and Galileo systems, capable of receiving multi-band signals including L1, L2, and L5. Equipped with a built-in low-noise amplification and filtering system, it is suitable for high-precision applications such as surveying, precision agriculture, UAV navigation, and vehicle positioning.
Compact and Lightweight for Easy Integration
Featuring a compact and lightweight design, the antenna is easy to install on various space-constrained devices. It supports standard interface connections and is compatible with a wide range of GNSS receiver systems.
Multi-Band and Multi-System for Comprehensive Coverage
Supports multiple operating bands of mainstream satellite navigation systems, effectively improving signal availability and positioning reliability for use in diverse and complex application environments.
Stable Performance for Outdoor Operations
Offers good environmental adaptability with a wide operating temperature range, vibration resistance, and weather tolerance, meeting the stability requirements for long-term continuous outdoor operation.
Key Features
-
Supports BeiDou/GPS/GLONASS/Galileo multi-systems
-
Receives L1/L2/L5 multi-band signals
-
Built-in low-noise amplifier
-
Compact structure, easy installation
-
Suitable for harsh outdoor environments
If you are selecting a high-performance GNSS antenna for UAVs, agricultural equipment, or vehicle systems, the DALANG AK181 provides reliable multi-system signal reception support.
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.
