Smart Antenna HX-ME403A Integrated with RTK Module UM960

Introduction
Key Features
Parameters
Applications
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Introduction

HX-ME403A is an embedded multi-band multi-constellation smart antenna developed by Harxon. Combining Harxon’s world leading antenna technology with Unicore’s full-constellation full-frequency RTK positioning module UM960, HX-ME403A delivers precise positioning performance in a compact and integration-ready structure. It's able to provide single point meter level accuracy, DGPS sub-meter level accuracy and RTK centimeter/millimeter level accuracy, very suited for robotic lawn mower and unmanned aerial vehicle (UAV) applications that require precise location and precise heading.

Key Features

Integrated Design and Compact Form Factor

The compact smart antenna, weighing ≤15g and measuring Φ46*H19.2mm, greatly reduces the weight of UAVs and features low power consumption.
Precision-Tuned OEM GNSS Antenna

The main part of HX-ME403A is an ultra-low profile Harxon helix antenna designed for high precision positioning of UAV. It excels in offering superior satellite signal tracking.
High Performance RTK Positioning Module

Integrated with Unicore’s full-constellation full-frequency RTK positioning module, which integrates RF, baseband and high precision algorithm, it can track multiple frequencies of all GNSS systems, enabling high-precision RTK positioning.
Strong Anti-Interference Performance

HX-ME403A equips a robust pre-filtered LNA that features an excellent out-of-band interference rejection performance, and the module features 60 dB narrowband anti-jamming and advanced jamming detection technology

Parameters

Signal Received	GPS L1C/A, L2C, L2P(Y), L5 GLONASS G1, G2 BDS B1I, B2I,B3I GALILEO E1, E5a, E5b SBAS L1C/A QZSS L1C/A, L2C, L5
Nominal Impedance	50Ω
Polarization	RHCP
Axial Ratio (@Zenith)	≤3dB
Azimuth Coverage	360°
Peak Gain	3dBi

RTK Connection
Positioning Module	UM960
Single Point Accuracy	Horizontal: 1.5m Vertical: 2.5m
DGPS Accuracy	Horizontal: 0.4m Vertical: 0.8m
RTK Accuracy	Horizontal: 0.8cm+1ppm Vertical: 1.5cm+1ppm
Timing Accuracy (RMS)	20 ns
Velocity Accuracy (RMS)	0.03 m/s
Channels	1408
Time to First Fix	Cold Start＜30s
Initialization Time	＜5s (Typical)
Initialization Reliability	＞99.9%
Data	Data Refresh Rate: 20Hz Positioning Differential Data: RTCM2.3, RTCM 3.x, CMR Data Format: NMEA-0183, Unicore

LNA Gain	23±2dB
Noise Figure	≤2dB
Output VSWR	≤2
Passband Ripple	±2dB

Dimensions	Φ46*H19.2mm (Shield cover and connectors not included)
Connector	GH1.25-6P
Weight	≤15g
Mounting	4 x M1.6 Screws
Interface Pin Order	1：GND 2：TX1 3：RX1 4：RX2 5：TX2 6：VCC