UAV Antenna

Introduction
Key Features
Parameters
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Introduction

Harxon HX-CH7018A is a compact GNSS helix antenna designed for high-precision RTK positioning and reliable multi-frequency satellite tracking. Supporting GPS, BDS, GLONASS, Galileo, QZSS, SBAS, IRNSS and L-Band correction services, it delivers high phase center stability, strong multipath rejection and reliable low-elevation signal reception. Featuring patented D-QHA technology and a pre-filtered LNA for enhanced out-of-band interference rejection, the HX-CH7018A maintains stable and consistent GNSS performance even in challenging signal environments. Its compact and lightweight design enables easy integration into UAVs, surveying and mapping equipment.

Full-Band Multi-Constellation GNSS Support
IPEX Female Connector for Easy Integration
Compact Φ46 × H21.9 mm Design, Only 8 g
Precision-Tuned Design with Customization Options

Key Features

Advanced D-QHA Technology for Consistent Performance

The HX-CH7018A combines multi-point feeding with patented D-QHA technology to deliver high phase center stability and consistent positioning performance. With up to 2.8 dBi RHCP gain and reliable low-elevation satellite tracking, it maintains stable GNSS performance even in environments with signal blockage.
Strong Anti-interference Performance

The HX-CH7018A integrates a pre-filtered LNA and optimized circuit design for strong out-of-band interference rejection. It effectively suppresses unwanted electromagnetic interference and helps maintain reliable GNSS signal reception and stable positioning performance in challenging RF environments.
Small Form Factor, Light Weight, Designed for Integration

With a compact Φ44 × H28 mm design and a weight of only 8 g, the HX-CH7018A enables easy integration into UAVs and other space-constrained equipment. Its small form factor minimizes space and weight requirements while supporting flexible integration for high-precision GNSS positioning.

Parameters

Performance
LNA
Mechaical
Environmental
Drawing

Signal Received	GPS L1/L2/L5 GLONASS L1/L2 GALILEO E1/E5a/E5b BDS B1/B2/B3 QZSS L1/L2/L5/L6 IRNSS L5 SBAS L1/L5 L-Band
Nominal Impedance	50Ω
Polarization	RHCP
Axial Ratio	≤3dB
Azimuth Coverage	360°(Omni-directional)
Output VSWR	≤2.0
Gain RHCP (maximum)	1166-1278MHz 2.6dBi (@ Zenith) 1559-1612MHz 2.8dBi (@ Zenith) L-Band 1.5dBi (@ Zenith)

LNA Gain	33±2dB
Noise Figure	≤2dB
Output VSWR	≤2.0
Out of Band Rejection	Upper Band:<1400mhz>30dB<1450mhz>33dB >1700MHz>30dB Lower Band:<1000mhz>41dB<1100mhz>40dB<1130mhz>28dB
Passband Ripple	±2dB
Operation Voltage	+3.3V to +5V DCC
Operation Current	≤55mA
Differential Propagation Delay	≤5ns