Overview

The TOXU TX-G051 is a compact multi-band active GNSS quadrifilar helical antenna developed for UAVs, GNSS receivers, RTK equipment, mobile mapping systems, autonomous devices, and other satellite-positioning applications.

The antenna covers two specified working frequency ranges: 1154–1300MHz and 1525–1621MHz. It supports compatible GPS L1/L2, GLONASS L1/L2, BDS B1/B2/B3, and Galileo E1/E2/E5a/E5b satellite-navigation signals.

Its quadrifilar helical architecture and right-hand circular polarization are designed for receiving compatible circularly polarized GNSS signals. Compared with a conventional flat patch structure, the compact helical form is suitable for equipment requiring a narrow antenna profile and flexible installation orientation.

The TX-G051 incorporates an active circuit with a specified LNA gain of 32±3dB at 25°C. Its typical noise figure is no more than 1.5dB, helping amplify received satellite signals before transmitting them to the connected GNSS receiver.

The product has a nominal impedance of 50 ohms and uses an SMA male connector for direct connection to a compatible SMA female receiver port. Its specified operating voltage range is 3.0–12V DC, with operating current of no more than 30mA.

The antenna measures approximately Φ27.5 × 105.6mm and weighs no more than 35g. Its compact ABS+PC housing is rated IP67 and supports compatible outdoor and mobile-equipment installations.

The TX-G051 is an active receiving antenna only. It does not independently calculate coordinates, process RTK correction data, or determine positioning accuracy. These functions are performed by the connected GNSS or RTK receiver.

Key Features

Multi-Band GNSS Reception

Covers 1154–1300MHz and 1525–1621MHz for compatible multi-frequency satellite-navigation receivers.

Multi-Constellation Signal Support

Supports compatible GPS L1/L2, GLONASS L1/L2, BDS B1/B2/B3, and Galileo E1/E2/E5a/E5b signals.

Quadrifilar Helical Architecture

The four-arm helical antenna structure provides a compact form factor for UAVs, portable receivers, mobile terminals, and other equipment with limited installation space.

Active Antenna Configuration

The integrated active circuit amplifies received GNSS signals before delivering them to the connected receiver.

Specified LNA Gain of 32±3dB

Provides the specified active signal amplification under the applicable test conditions at 25°C.

Typical Noise Figure ≤1.5dB

Supports low-noise amplification of compatible GNSS signals under the specified operating conditions.

RHCP Polarization

Right-hand circular polarization supports reception of compatible circularly polarized satellite-navigation signals.

Axial Ratio ≤1.5dB

Provides the specified circular-polarization performance under the corresponding product test conditions.

SMA Male Direct Connection

The standard SMA male interface supports direct connection to a compatible SMA female 50-ohm GNSS receiver port.

Compact and Lightweight Housing

The approximately Φ27.5 × 105.6mm antenna weighs no more than 35g, supporting integration with weight- and space-sensitive equipment.

IP67-Rated Construction

The ABS+PC enclosure supports compatible outdoor installations when the connector and complete equipment interface are correctly assembled and sealed.

Technical Specifications

Applications

• Unmanned Aerial Vehicles

• Multi-Band GNSS Receivers

• RTK Receiver Equipment

• Mobile Mapping Systems

• Surveying and Mapping Equipment

• Precision Agriculture Machinery

• Autonomous Robots and Vehicles

• Portable Positioning Terminals

• Industrial Navigation Equipment

• Vehicle Positioning Systems

• Reference Stations and Field Receivers

• OEM Satellite-Navigation Equipment

System Integration

The TX-G051 must be connected to a compatible GNSS or RTK receiver supporting the required frequency bands and satellite signals.

Because the TX-G051 is an active antenna, the connected receiver must supply compatible DC bias power through the RF port. The receiver should support the specified 3.0–12V DC operating range and provide the required current.

The standard antenna uses an SMA male connector. The receiver or RF cable assembly should therefore provide a compatible SMA female 50-ohm interface with sufficient mechanical clearance.

Before integration, confirm the receiver’s supported GNSS bands, antenna-bias voltage, available current, RF input impedance, connector type, connector orientation, and mechanical installation space.

Install the antenna where it has the clearest practical sky view. Keep it away from large metal obstructions, transmitting antennas, motors, switching power supplies, high-current cables, and other potential sources of signal blockage or electromagnetic interference.

Final performance can be affected by the receiver, installation orientation, surrounding materials, equipment housing, nearby electronics, power-supply quality, and operating environment. Sample testing in the actual equipment is recommended before volume production.

Although the enclosure is specified as IP67, the connector and complete equipment interface must also be correctly installed and sealed for outdoor use.

For RTK operation, the connected receiver must support RTK processing and receive valid correction data from an NTRIP service, base station, radio modem, cellular modem, or another compatible correction source.

Why Choose TOXU

TOXU provides GNSS and RTK antennas, communication antennas, embedded antennas, external antennas, RF cable assemblies, RF connectors, GNSS modules, receiver boards, and integrated positioning hardware for equipment manufacturers and system integrators.

Our engineering team supports frequency selection, receiver compatibility evaluation, antenna-bias confirmation, connector and cable configuration, installation analysis, RF testing, sample verification, and customized antenna development.

With IATF16949 and ISO9001-certified manufacturing capabilities, TOXU supports customized labels, packaging, quality inspection, prototype verification, and stable volume-production delivery for overseas B2B projects.

FAQ

Q: What frequency ranges does the TX-G051 cover?

A: It covers 1154–1300MHz and 1525–1621MHz for compatible multi-band GNSS receivers.

Q: Which GNSS signals does the TX-G051 support?

A: The supplied specifications list GPS L1/L2, GLONASS L1/L2, BDS B1/B2/B3, and Galileo E1/E2/E5a/E5b.

Q: Is the TX-G051 an active antenna?

A: Yes. It incorporates an active circuit with a specified LNA gain of 32±3dB at 25°C.

Q: What does quadrifilar helix mean?

A: It refers to a four-arm helical antenna architecture designed to provide RHCP reception in a compact cylindrical structure.

Q: Can the TX-G051 provide RTK positioning independently?

A: No. It receives and amplifies compatible GNSS signals. RTK calculations, correction-data processing, and positioning output are handled by the connected receiver.

Q: What power supply does the antenna require?

A: The specified operating voltage is 3.0–12V DC and the operating current is no more than 30mA. Power is normally supplied by the compatible receiver through the RF interface.

Q: Which connector does the TX-G051 use?

A: The standard configuration uses an SMA male connector, also identified as SMA-J.

Q: What are the antenna dimensions?

A: The specified dimensions are approximately Φ27.5 × 105.6mm, and the weight is no more than 35g.

Q: Is the TX-G051 suitable for outdoor use?

A: The housing is specified as IP67. The connector and complete equipment interface must also be properly installed and sealed.

Q: Can TOXU support OEM requirements?

A: Yes. TOXU can evaluate product labels, packaging, receiver compatibility, related RF cable assemblies, testing, and other volume-project requirements.