High Accuracy Gnss Active Antenna

• Customization: Available
• Directionality: Rhcp
• Frequency Band: L1 Band
• Model NO.: GL504D
• Material: Ceramic
• Sturcture Form: Wire Antenna
• VSWR: <1.5
• Weight/CTN: 12.5
• Cable Length: 2m
• Transport Package: 48*30*28cm
• Specification: 25*25*6mm
• Trademark: Asialeren
• Origin: China
• HS Code: 8517710000
• Production Capacity: 10000PCS/Day
• Package Size: 53.00cm * 23.00cm * 29.00cm
• Package Gross Weight: 5.000kg

Product Description

Product Description

GL504D  High Precision Antenna--High Accuracy Applications
The GL504D is a high-accuracy GNSS active antenna designed for embedded and space-constrained applications such as drones, handheld devices, and precision agriculture equipment. It operates in the 1561.098–1602 MHz band with RHCP polarization and a low axial ratio of ≤2 dB at zenith. The integrated LNA delivers 28±2 dB gain with an ultra-low noise figure of ≤1.0 dB. With a compact size of 25×25×6 mm, IPEX connector, and low power consumption (≤24 mA at 3.3 V DC), the GL504D offers high performance in a minimal footprint. It is RoHS compliant and operates reliably from -40°C to +85°C.

Specification

Item		Specifications
Antenna 2 Pins	Frequency Range	1561.098~1602MHz
	Polarization	RHCP
	Gain	4dBic@70*70mmGP
	V.S.W.R	<1.5
	Impedance	50 Ω
	Axial Ratio	≤2dB(zenith)
	Dimension	25*25*6mm
LNA	Gain	28±2dB
	Noise Figure	≤1.0dB
	Supply Voltage	3.3±0.3VDC
	Current Consumption	≤[email protected]
	V.S.W.R	<2.0
Mechanical	Cable	RF1.37 orothers
	Connector	IPEX orothers
	Mounting Method	Embedded
Environmental	Operating Temperature	-40℃~+85℃
	Relative Humidity	Upto95%
	Vibration	10 to 55Hz with1.5mm amplitude 2hours
	Environmentally Friendly	ROHS Compliant

Functional Advantages

Comprehensive Multi-System Support

Compatible with all major global navigation satellite systems (BDS, GPS, GLONASS, and Galileo) across multiple frequency bands. 

Superior Signal Quality for High-Accuracy Applications

With an integrated Low-Noise Amplifier (LNA) offering high gain and a low noise figure (≤2.0), the antenna significantly improves signal reception and sensitivity.  

Robust Design with Low Power Consumption

Engineered for durability, the antenna operates reliably in extreme temperatures (-40℃ to +85℃) and high humidity (95% non-condensing). 

Core Applications

Surveying & Mapping
Ideal for high-accuracy geodetic surveying, cadastral mapping, and construction layout, where its stable phase center and multi-GNSS support enable centimeter-level positioning reliability.

Precision Agriculture
Enables automated guidance for farm machinery and supports variable-rate application systems, improving efficiency and crop yield through accurate, real-time positioning.

Unmanned Aerial Vehicles (UAVs)
Provides dependable navigation and positioning for drones used in aerial mapping, inspection, delivery, and agricultural monitoring, even in dynamic flight conditions.

Autonomous & Connected Vehicles
Supports automotive testing, ADAS development, and fleet management systems by delivering robust and continuous positioning data essential for navigation and telematics.

Critical Infrastructure & Timing
Suitable for synchronization in telecommunications networks, power grids, and scientific monitoring stations where precise timing and reliable GNSS signals are crucial.

FAQ

 
Q1: What level of positioning accuracy can this antenna support?

A: This antenna is designed to support centimeter to millimeter-level accuracy when used with a compatible GNSS receiver in RTK (Real-Time Kinematic) or PPK (Post-Processed Kinematic) modes.     Its stable phase center (±5mm) and low axial ratio ensure reliable signal quality for high-precision applications.
 
Q2: Is the antenna compatible with my existing GNSS receiver?

A: Yes, it supports all major GNSS systems (GPS, GLONASS, Galileo, BDS) across multiple frequencies.     It uses a standard SMA connector and operates on 3–12V DC, making it compatible with most industrial and surveying-grade receivers.
 
Q3: Can it be used in harsh environmental conditions?

A: Absolutely.  The antenna is built to operate in temperatures from -40℃ to +85℃ and withstand up to 95% non-condensing humidity, making it suitable for outdoor, marine, and industrial environments.

Q4: How should the antenna be mounted for optimal performance?

A: For best results, mount the antenna on a stable, metallic ground plane with a clear view of the sky.     Ensure the polarization (RHCP) is oriented upward, and avoid obstructions near the antenna's horizon.

Q5: Is the antenna suitable for moving platforms like drones or vehicles?

A: Yes.  Its lightweight design (≤150g), low power consumption, and robust performance across dynamics make it ideal for UAVs, autonomous vehicles, agricultural machinery, and marine navigation systems.