Smart Antenna HX-MR402A Integrated with RTK Module UM960

Introduction
Key Features
Parameters
Applications
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Introduction

HX-MR402A is a housed multi-band multi-constellation smart antenna developed by Harxon. Combining Harxon’s world’s leading antenna technology with Unicore’s full-constellation full-frequency RTK positioning module UM960, HX-MR402A 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 and RTK centimeter/millimeter level accuracy, very suited for various robotic lawn mower and unmanned aerial vehicle (UAV) applications that require precise location and precise heading.

Full-band Multi-constellation GNSS Support
Smart Helix Antenna Integrated with RTK Module UM960
Small Size and Light Weight (Only ≤30g)
RTK Accuracy: Horizontal: 0.8cm+1ppm, Vertical: 1.5cm+1ppm
DGPS Accuracy: Horizontal: 0.4m, Vertical: 0.8m
Single Point Accuracy: Horizontal: 1.5m, Vertical: 2.5m

Key Features

Integrated Design and Compact Form Factor

The compact smart antenna, weighing ≤30g and measuring Φ48*H38mm, greatly reduces the weight of UAVs and features low power consumption. Additionally, the GNSS antenna and module are well compatible with each other, simplifying the development process and reducing costs for engineers.
Precision-Tuned OEM GNSS Antenna

The main part of HX-MR402A is an ultra-low profile Harxon helix antenna designed for high precision positioning of UAV. It excels in offering superior satellite signal tracking, provides excellent axial ratios, enables excellent multipath mitigation and a very precise phase center.
High Performance RTK Positioning Module

HX-MR402A is integrated with Unicore’s full-constellation full-frequency RTK positioning module, which integrates RF, baseband and high precision algorithm. It can simultaneously track multiple frequencies of all GNSS systems, enabling the module to output high-precision RTK positioning.
Strong Anti-Interference Performance

HX-MR402A is capable of offering superior positioning performance in challenging environments. The antenna 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.

Parameters

Signal Received	GPS L1C/A, L2C, L2P(Y), L5 GLONASS G1, G2 BDS B1I, B2I, B3I, B1C, B2a 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	2.8dBi

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	Φ48*H38mm (Shield cover and connectors not included)
Connector	GH1.25-8P
Weight	≤30g
Mounting	3 x M2.5 Screws
Interface Pin Order	1：GND 2：RST 3：TX1 4：RX1 5：RX2 6：TX2 7: PPS 8: VCC