Aviation Antenna

Introduction
Key Features
Parameters
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Introduction

The Harxon HX-BA681A is a high-performance, low-profile aviation GNSS antenna designed for precise positioning in UAVs, unmanned aircraft, and high-precision vehicle systems. Supporting multi-frequency GPS, GLONASS, and BeiDou signals, it features high gain, a stable phase center, and a low-drag aerodynamic design for accurate satellite tracking in high-dynamic environments. Its compact, lightweight 190 g construction, built-in low-noise amplifier (LNA), and strong out-of-band interference rejection ensure stable performance in challenging conditions. With IP67-rated protection and broad GNSS receiver compatibility, the HX-BA681A is ideal for UAV navigation, aerial surveying, precision agriculture, GIS mapping, and high-precision vehicle positioning.

Key Features

Stable Phase Center

The multi-feed design aligns the antenna's phase center with its geometric center, minimizing measurement errors and improving positioning accuracy. Combined with high gain and wide-angle circular polarization, it ensures stable GNSS performance for high-precision positioning.
Compact and Lightweight Design

Measuring Φ88.9 × 35 mm and weighing only 190 g, the HX-BA681A features a compact, low-drag aerodynamic design that minimizes wind resistance. Its rugged construction and IP67-rated protection ensure reliable performance against dust, water, and UV exposure.
Tracking in Complex Environments

With high gain and wide beamwidth, the HX-BA681A reliably tracks visible satellites in challenging environments. Its excellent signal reception provides accurate GNSS positioning data for UAV navigation, aerial surveying, precision agriculture, and operations under tree canopies.
Strong Anti-Interference Performance

The built-in low-noise amplifier (LNA) provides excellent out-of-band rejection, suppressing unwanted electromagnetic interference from nearby wireless systems. This reduces signal loss and maintains stable GNSS reception around power grids, communication base stations, and radio stations.

Parameters

Performance
LNA
Mechaical
Environmental
Drawing

Signal Received	GPS L1/L2 GLONASS L1/L2 BDS B1/B2
Nominal Impedance	50Ω
Polarization	RHCP
Axial Ratio	≤3dB
Azimuth Coverage	360°
Output VSWR	≤2.0
Gain at Zenith	3dBi