High Precision UAV GNSS Antenna HX-CH7609A

Introduction
Key Features
Parameters
Applications
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Introduction

The Harxon HX-CH7609A is a lightweight, multi-frequency GNSS helix antenna designed for high-precision surveying, mapping, and UAV applications. It supports GPS, GLONASS, Galileo, BeiDou, QZSS, IRNSS, and SBAS signals, as well as L-band correction services. Measuring Φ43.6 × 40.8 mm and weighing no more than 30.5 g, it combines a compact design with secure bottom screw mounting and IP67-rated protection against water and dust. Harxon’s patented D-QHA technology and multi-point feeding provide a stable phase center and reliable satellite tracking, while a pre-filtered low-noise amplifier suppresses out-of-band interference. It is well suited for aerial photography, remote sensing, and infrastructure inspection.

Full-Band Multi-Constellation GNSS Support
SMA Male Connector for Easy Integration
Strong Interference Rejection with Pre-Filtered LNA
IP67-rated water and dust protection

Key Features

High Phase Center Stability for Consistent Performance

The HX-CH7609A combines multi-point feeding with patented D-QHA technology to deliver a stable phase center and GNSS antenna gain of up to 2.8 dBi. Its wide beam and symmetric radiation patterns support reliable satellite tracking for high-precision surveying and UAV applications.
Strong Anti-interference Performance

An optimized circuit layout and pre-filtered low-noise amplifier help the HX-CH7609A suppress out-of-band interference. This design reduces the impact of unwanted electromagnetic signals, supporting stable GNSS reception during UAV operations and other precision positioning tasks.
Optimized Installation for Integration

Measuring Φ43.6 × 40.8 mm and weighing no more than 30.5 g, the HX-CH7609A is easy to integrate into compact positioning systems. Bottom screw mounting provides secure attachment, while its lightweight design helps meet the space and payload requirements of UAV platforms.

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	+3.3 to +12VDC
Operation Current	≤55mA
Differential Propagation Delay	≤5ns