Multi-Star Multi-Frequency Spiral Antenna Hot Sales

• Customization: Available
• Type: GPS Antenna
• Certification: ISO14001, RoHS
• Model NO.: GL301JC
• Warranty: 1 Year
• Vswr: <1.5
• Directionality: Rhcp
• Material: ABS
• Sturcture Form: Active Spiral Antenna
• PCS/CTN: 200
• Weight/CTN: 12.5
• Transport Package: 48*30*28cm
• Specification: 15*15*4mm
• Trademark: LEHENG
• Origin: China
• HS Code: 8529109090
• Production Capacity: 5000PCS/Day
• Package Size: 20.00cm * 15.00cm * 5.00cm
• Package Gross Weight: 1.000kg

Product Description

Product Description

GL301JC High Precision Antenna--High Accuracy Applications
The GL301JC is a multi-star, multi-frequency spiral antenna designed for high-precision GNSS applications such as RTK surveying, UAV guidance, and portable measurement systems. Utilizing multi-arm spiral technology, it supports GPS L1/L2/L5, GLONASS L1/L2, BeiDou B1/B2/B3, and Galileo E1 bands with excellent phase center stability (<2 mm). The antenna provides high gain (≥6 dB at zenith) and consistent performance across elevation angles. With an integrated LNA (38±2 dB gain, <1.0 dB noise figure) and triple-layer protective radome, the GL301JC ensures reliable operation in harsh outdoor conditions, making it ideal for professional surveying and navigation.

Specification

Electrical Characteristics
Antenna	1	Antennamodel	GPSCompass GLONASSGALILEO
	2	Nominalfrequency	GPSL1:1575.42±1.023MHz, L2:1227±1.023MHz; L5:1176±1.023MHZ CompassB1:1561±2.046MHz,B2:1207±2.046MHz,B3:1268±10.23MHz; GLONASSL1=1602+0.5625*k(MHz),L2=1246+0.4375*k(MHz) GALILEOE1:1575.42
	3	FrequencyRange	1197-1278/1559-1612MHz
	4	V.S.W.R	≤2 .0
	5	AxialRatio	elevation90°:≤3, elevation15°:≤5
	6	Gain	elevation90°:≥6,elevation20°:≥0plane
	7	FronttobackPower	±60°≥15dB
	8	Phase center(mm)	<2
	9	Impedance	50Ω
	10	Polarization	RHCP
LNA	1	LNAGain	38±2dB
	2	V.S.W.R	<2
	3	NoiseFigure	<1.0
	4	DCVoltage	3.3-12V
	5	Current	25-40mA

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.