High Precision Multi

• Overview
• Product Description
• Specification
• Functional Advantages
• Core Applications
• FAQ

Overview

Basic Info.

Model NO.	GL-BSWA23MH
Material	ABS
Sturcture Form	Surface Antenna
VSWR	<1.5
Product Name	Multi-Band Gnss Spiral Antenna
Keywords	GPS Glonass Antenna
Frequency	GPS/Glonass/Compass/Galileo
Gain	38±2dBi
Connector	SMA Male
Mounting Method	Screw
Frequency Range	1197-1278/ 1559-1612MHz
V.S.W.R	≤2 .0
Axial Ratio	Elevation 90 ° :≤3 / Elevation 15 ° :≤5
Front to Back Power	±60° ≥15db
Phase Center	<2 mm
Impedance	50ω
Polarization	Rhcp
Lna Gain	38±2db
Noise Figure	<1.0
Transport Package	Standard Packaging or Customized
Specification	Standard Specifications or Customized
Trademark	GLOBAL
Origin	Henan, China
HS Code	8517710000
Production Capacity	5000PCS/Day

Product Description

Product DescriptionMULTI-STAR MULTI-FREQUENCY SPIRAL ANTENNA
PN: GL301JCGL301JC is a multi-star and multi-frequency active spiral antenna, designed with multi-arm spiral technology, supporting compass B2 and B3. L1/L2 or L1/L5 tri-band satellite navigation signal reception for GPS, GLONASS, and GALILEO systems. It can meet the needs of multi-system compatibility and high-precision measurement, and can be widely used in portable equipment, UAVs, and other high-precision guidance position occasions, accepting user customization.
Technical CharacteristicsMulti-arm helix technology is used to ensure right-handed circular polarization and phase center performance, reducing the impact of measurement errors.An antenna unit using the air medium has the characteristics of high gain, small gain roll down, and low elevation satellite signal reception is good, to ensure that, in some of the more serious occasions can still be normal star.3 protective covers for the antenna for long-term work in the field.Specification

RTK Antenna Drawing
Frequency Range (MHz)	B3,B1,WiFi
Operating Voltage	3.0~5V DC
Polarization	RHCP(B3A\B1A)linear(wifi)
Operating Current	≤30mA
Gain (dBi)	B1A≥1.5dBi B3A≥1.5dBi WiFi≥0dBi
Operating Temperature	-40℃~+65℃
Axial Ratio	≤2dB
Storage Temperature	-55℃~+70℃
Horizontal Coverage	360°
Humidity	95%
LNA Gain	32±3dB
VSWR	B1A,B3A≤1.8 WiFi≤3.0
Isolation	B1A,B3A,WiFi≥25dB
WiFi\ B1A,B3A	≥40dB
Waterproof	IP67
Connector	SMA-JHD18
Dimensions-mm	23X56
Weight	≤16g

Functional Advantages

ADVANCED MULTI-ARM HELIX DESIGN
Ensures excellent Right-Hand Circular Polarization (RHCP) and stable phase center performance (<2 mm), significantly reducing measurement errors and enhancing positioning reliability.

WIDE MULTI-SYSTEM COMPATIBILITY
Supports all major global navigation satellite systems (GPS, GLONASS, GALILEO, Compass) across multiple frequency bands L1/L2/L5, B2/B3, ensuring signal availability and redundancy worldwide.

SUPERIOR SIGNAL RECEPTION
The air dielectric antenna element offers high gain, minimal gain roll-off, and excellent low-elevation satellite signal reception, maintaining stable performance in challenging environments.

HIGH-PERFORMANCE INTEGRATED LNA
Features a low-noise amplifier with high gain (38±2 dB) and an ultra-low noise figure (<1.0 dB) to amplify weak signals and improve overall system sensitivity.

ROBUST & PROTECTED CONSTRUCTION
Built with three protective radome layers, ensuring long-term durability and reliable operation in harsh outdoor and field conditions.Core Applications
1. High-precision RTK (Real-Time Kinematic) surveying and mapping
2. Unmanned Aerial Vehicle (UAV) and drone navigation systems
3. Precision agriculture and autonomous machine guidance
4. Portable and handheld professional GNSS equipment
5. Geodetic monitoring and scientific research

FAQ
Q1: Is this antenna compatible with all GNSS systems?
A: Yes, it supports GPS, GLONASS, Galileo, and COMPASS (B2/B3).Q2: How does the air medium improve performance?
A: Reduces signal loss and enhances gain stability, especially for low-elevation satellites.Q3: Can it withstand heavy rain or dust?
A: Yes, the IP67 rating ensures protection against water and dust ingress.Q:4 What power supply is required?
A: Operates on 3.3~12V DC, compatible with most portable batteries and field equipment.Q5: Is calibration needed for phase center accuracy?
A: Minimal calibration required due to <2mm phase center stability.Q6: Is it suitable for Arctic environments?
A: Designed for harsh conditions, but confirm temperature specs with the manufacturer.Q7: How to reduce signal interference?
A: RHCP polarization and front-to-back ratio ≥15dB minimize multipath effects.