Gnss Surveying+LTE MIMO Combination Antenna Gl228lm

• Customization: Available
• Type: GPS Antenna
• Certification: ISO14001, RoHS
• Model NO.: GL228LM
• Warranty: 1 Year
• Usage Occasion: Car Antenna
• Operating Wavelength: Microwave
• Vswr: <1.5
• Nature of Operation: Receiving Antenna
• Sturcture Form: Wire Antenna
• Material: ABS
• Directionality: Rhcp
• PCS/CTN: 200
• Weight/CTN: 12.5
• Connector: Fakra C Blue or SMA Male
• Cable Length: 2m
• Usage: Communication Antenna
• Base Antenna: High Gain Antenna
• Dimensionality: One-Dimensional Antenna
• Transport Package: 48*30*28cm
• Specification: 40*30*15.1mm
• Trademark: LEHENG
• Origin: China
• HS Code: 8529109090
• Production Capacity: 3000PCS/Day
• Package Size: 53.00cm * 23.00cm * 27.00cm
• Package Gross Weight: 12.930kg

Product Description

Product Description

GL228LM  High Precision Antenna--High Accuracy Applications
The GL228LM is a versatile combination antenna integrating high-precision GNSS surveying and LTE MIMO capabilities into a single compact unit. It supports multi-constellation GNSS signals (GPS L1/L2, GLONASS G1/G2, BeiDou B1/B2/B3, Galileo E1/E2/E5b/E6) with a phase center error of ±2 mm, making it ideal for RTK and precision surveying. The LTE MIMO antenna covers 698–960 MHz and 1710–2690 MHz, providing reliable 4G connectivity for data transmission. With a gain of 40±2 dB, low noise figure (≤1.5 dB), and robust IP67 protection, the GL228LM is suited for UAVs, mapping systems, and mobile field solutions requiring both accurate positioning and stable communication.

Specification

Item		Specifications
GNSS Antenna	Frequency	GPS L1/L2 GLONASS G1/G2 COMPASS B1/B2/B3 Galileo E1/L1/E2/E5b/E6
	Polarization	RHCP
	Axial Ratio	≤3dB
	V.S.W.R	≤1.5
	Peak Gain	≥5dBi
	Impedance	50Ω
	Phase Center Error	±2mm
	Horizontal coverage angle	360°
GNSS Antenna LNA	Gain	40±2dB
	Noise Figure	≤1.5dB
	Passband fluctuation	±1dB
	Supply Voltage	3~12V DC
	Current Consumption	≤45mA
	V.S.W.R	≤2.0
LTE Antenna MIMO	Frequency Range	698~960MHz/1710~2690MHz
	Polarization	Linear
	Gain	MAIN:2.5dBi(Zenith) AUX:2.0dBi(Zenith)
	V.S.W.R	<3.0
	Impedance	50Ω

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.