Smart Antenna HX-ME402A

The HX-ME402A is a multi-band, multi-constellation embedded smart antenna developed by Harxon. Combining Harxon’s world-leading antenna technology with Unicore’s full-constellation full-frequency RTK positioning module (UM980), HX-ME402A delivers precise positioning performance in a compact and integration-ready structure. It provides single-point meter-level accuracy, DGPS sub-meter-level accuracy, and RTK centimeter/millimeter-level accuracy, making it ideal for robotic lawn mower and UAV applications requiring precise location and heading.

INTEGRATED DESIGN AND COMPACT FORM FACTOR

The compact smart antenna weighs ≤80g and measures Ø90\*H24.4mm, featuring a stable structure, good consistency, and reliable electrical performance. The antenna and module are well-compatible with each other, simplifying the development process and reducing costs for engineers, thereby greatly improving the overall reliability of the application.

KEY FEATURES

• Smart antenna integrated with RTK module
• Small size, lightweight, and integration-ready structure
• Supports GPS, GLONASS, Galileo, BeiDou, QZSS, SBAS
• Strong anti-interference performance
• Stable phase center guarantees millimeter-level positioning accuracy

PRECISION-TUNED OEM GNSS ANTENNA

The main part of the HX-ME402A is Harxon’s small-sized, high-performance OEM GNSS antenna, designed for high-precision positioning. It excels in superior satellite signal tracking, including GPS, GLONASS, Galileo, BeiDou, QZSS, and SBAS. The antenna provides very stable phase center variation with advanced multipoint feeding technology, ensuring excellent positioning accuracy.

HIGH PERFORMANCE RTK POSITIONING MODULE

The HX-ME402A is integrated with Unicore’s full-constellation full-frequency RTK positioning module UM980, which integrates RF, baseband, and a 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

The HX-ME402A offers superior positioning performance in challenging environments. The antenna equips a robust pre-filtered LNA that features excellent out-of-band interference rejection. Additionally, the module offers 60 dB narrowband anti-jamming and advanced jamming detection technology, ensuring stable positioning performance in complex environments.

Parameter	Details
Signal Received	GPS (L1C/A, L2C, L2P(Y), L5)
	BDS (B1I, B2I, B3I, B1C, B2a, B2b)
	GLONASS (G1, G2, G3)
	GALILEO (E1, E5a, E5b, E6)
	QZSS (L1C/A, L1C, L2C, L5)
	NavIC (L5)
	SBAS (L1C/A)
	L-Band
Nominal Impedance	50Ω
Polarization	RHCP
Axial Ratio	≤3dB
Azimuth Coverage	360°
Output VSWR	≤2.0
Peak Gain	4.0dBi
LNA Gain	23±2dB
Noise Figure	≤2dB
Passband Ripple	±2dB
Differential Propagation Delay	≤5ns
Positioning Module	UM980
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)	20ns
Velocity Accuracy (RMS)	0.03 m/s
Channels	1408 (NebulasIV-based)
Time to First Fix	Cold Start <12s
Initialization Time	<5s (Typical)
Initialization Reliability	≥99.9%
Data Refresh Rate	50Hz Positioning
Differential Data	RTCM V3.X
Data Format	NMEA-0183, Unicore
Operation Voltage	5V
Power Consumption	500mW (Typical)
Operating Temperature	-40°C to +85°C
Storage Temperature	-55°C to +95°C
Dimensions	Ø90 x H24.4mm
Weight	≤80g
Connector	HY-2.0-AWT-6
Mounting	4 x M3 Screws
Interface Pin Order
Pin 1	VCC
Pin 2	TX2
Pin 3	RX2
Pin 4	RX1
Pin 5	TX1
Pin 6	GND

Download Data Sheet