Helix Antenna

Overview

JH003 is a robust, full-frequency helical antenna with high interference immunity. It is designed to mitigate co-frequency signal interference, high-power signal interference, and multiple radio communication system interference, ensuring high-precision positioning in complex electromagnetic environments. The antenna employs beamforming technology to enhance signal strength and quality, and utilizes advanced pre-multiple filtering to effectively suppress out-of-band noise and multipath signals, significantly improving anti-interference capabilities. These features make it ideal for use in drones, aviation, vehicle-mounted, and shipborne devices. Additionally, it is compatible with multi-brand boards and can achieve static millimeter-level positioning.

Key Features

Advanced Beamforming Technology

In environments where low-elevation co-frequency signal interference causes GNSS to malfunction, this antenna effectively reduces the reception of co-frequency signals below a 15-degree elevation angle. So it can achieve more than 20dB co-frequency signal attenuation, with greater suppression at lower elevation angles.

Strong Multipath Signal Suppression

The antenna reduces the reception of non-line-of-sight signals by precisely controlling the beam direction, thus effectively mitigating the adverse effects of multipath interference.

Superior Out-of-Band Signal Rejection

The antenna is equipped with advanced pre-multiple filters that effectively eliminate unwanted out-of-band interference signals, thereby reducing adjacent frequency signal interference.

Compact and Durable Structure

This antenna boasts a small form factor (Φ109mm*H134mm) and light weight (250g). It is IP67-rated, providing excellent water and dust protection, along with corrosion and shock resistance.

Parameters

ANTENNA PERFORMANCE

Frequency Coverage

GPS/QZSS L1/L2/L5, BDS B1/B2, GLONASS G1/G2, GALILEO E1/E5, L-band 1540M

VSWR

≤2

Impedance

50Ω

Polarization

RHCP

Axial Ratio

≤3dB

Coverage Angle

Azimuth: 0-360°; Elevation: 0-90°

Peak Gain

4dBic@1164~1254MH
2.5dBic@1559~1606MHz

CIRCUIT PERFORMANCE

LNA Gain

35±2dB

Out-of-Band Rejection

Lower Band: 1164 -1254 MHz
≥85dB@<1100>1300 MHz;
≥85dB@>1325 MHz
Upper Band: 1559-1606 MHz
≥85dB@<1526MHz; ≥35dB@<1536MHz;
≥50dB@>1626MHz

Burnout Resistance

≥10W

Noise Figure

≤2.5dB

Group Delay

≤10ns

VSWR

≤2

Operation Voltage

5-12V

Operation Current

≤150mA

SYSTEM PERFORMANCE

Phase Center Error

≤4mm

Positioning Accuracy

Static millimeter level

Adaptation Board

Compatible with multi-brand boards, with some requiring
LNA gain adjustment

MECHANICAL

Dimensions

Φ109mm*H134mm (Connector not included)

Weight

≤250g

Antenna Cover

Radome: PC; Base: Aluminum Alloy

Mounting

4*M3 screws fixed, upward or downward

Color

Black

Connector

TNC-K

ENVIRONMENTAL

Operating Temperature

-40°~+70°

Storage Temperature

-45°~+85°

Waterproof Rating

IP67

Salt Spray Test

Conducted for 96 hours using neutral salt spray

Mechanical Shock Test

≤50g

Quality Level

Industrial Grade

Product Certification

FCC, CE, RoHS

Localization Rate

100%

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