Overview

The TOXU TX-G039 is a multi-constellation, multi-frequency active GNSS aviation antenna designed for professional navigation, positioning, and timing equipment.

It supports compatible GPS L1/L2/L5, BDS B1/B2/B3, GLONASS G1/G2/G3, Galileo E1/E5a/E5b, and L-Band signals. It can be integrated with a suitable multi-band GNSS or RTK receiver for aviation equipment, UAVs, precision agriculture, vehicle positioning, mobile mapping, and other professional navigation systems.

The antenna uses a dual-feed, dual-stacked patch architecture with right-hand circular polarization. Its specified peak antenna gain is at least 4.0dBi at the center frequency when tested with a 100mm ground plane.

The integrated low-noise amplifier provides a specified gain of 38±3dB at 25°C. The noise figure is specified as no more than 2.0dB at 25°C, and the output VSWR is no more than 1.5:1 under the specified test conditions.

The active circuit operates from 3.0V to 16V DC and consumes less than 45mA. A compatible GNSS receiver or external bias-tee normally supplies antenna bias power through the RF connection.

The TX-G039 has a nominal 50-ohm impedance and uses a TNC female connector. Compatible equipment should therefore use a TNC male mating connector and a suitable 50-ohm coaxial cable assembly.

The antenna measures 119.38 × 76.2 × 27.0mm and weighs approximately 185g. Its ABS+PC radome, aluminum-alloy 6061-T6 base, and four-screw-hole structure provide a secure mechanical interface for compatible equipment.

The specification lists expected IP67 protection, an operating temperature range of -40°C to +85°C, 15kV air-discharge ESD protection, vibration resistance, and shock resistance for demanding environmental conditions.

The TX-G039 is an active GNSS antenna only. It receives and amplifies compatible satellite signals but does not independently calculate position, generate RTK corrections, process correction data, or provide navigation output.

Key Features

Multi-Constellation GNSS Support

Supports compatible GPS, BDS, GLONASS, and Galileo satellite-navigation signals within the frequency bands specified for the product.

Multi-Band L1/L2/L5 Reception

Designed for compatible multi-frequency GNSS and RTK receiving systems used in aviation, UAV, mapping, vehicle, agriculture, and industrial applications.

L-Band Capability

Supports compatible L-Band correction or augmentation signals when connected to a suitable receiver and corresponding correction service.

Dual-Feed, Dual-Stacked Patch

The multi-feed stacked-patch architecture supports multi-frequency reception and the specified RHCP antenna performance.

RHCP Polarization

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

Peak Gain ≥4.0dBi

The antenna provides a specified peak gain of at least 4.0dBi at the center frequency when tested with a 100mm ground plane.

Axial Ratio ≤1.5dB at Zenith

Supports the specified circular-polarization performance at zenith under the applicable test conditions.

38±3dB LNA Gain

The integrated low-noise amplifier strengthens received satellite signals before delivering them to the connected GNSS receiver.

Noise Figure ≤2.0dB

The low-noise amplifier is designed to limit additional noise introduced during compatible GNSS signal amplification.

Output VSWR ≤1.5:1

Provides the specified RF matching performance for integration with compatible nominal 50-ohm receiving systems.

Wide 3.0–16V DC Input

Supports bias power supplied through the RF connection by a compatible GNSS receiver or external bias-tee circuit.

Operating Current Below 45mA

The active antenna circuit operates with a specified current consumption of less than 45mA.

15kV Air-Discharge ESD Protection

The integrated ESD protection supports operation in demanding equipment and installation environments.

Out-of-Band Signal Rejection

The integrated filtering provides specified suppression of signals outside the supported GNSS frequency ranges.

TNC Female Connector

The threaded RF interface supports secure connection to a compatible TNC male 50-ohm coaxial cable assembly.

Four-Hole Flange Mounting

The four-screw-hole base supports secure mechanical installation on compatible aircraft, UAV, vehicle, and equipment surfaces.

Rugged Mechanical Construction

The ABS+PC radome and aluminum-alloy 6061-T6 base support professional mobile and outdoor equipment integration.

Technical Specifications

Dimension Drawing

The TX-G039 measures 119.38 × 76.2 × 27.0mm and uses a four-hole flange-mounting structure.

The supplied drawing shows an overall width of 76.20mm, overall length of 119.38mm, radome diameter of approximately 67.50mm, and four mounting holes for secure equipment installation.

The standard RF interface is a TNC female connector positioned on the side of the antenna base.

Applications

• Aviation Navigation Equipment

• Unmanned Aerial Vehicles

• Multi-Frequency GNSS and RTK Receivers

• Airborne Mapping Systems

• Precision Agriculture Equipment

• Vehicle Positioning and Navigation Systems

• Mobile Surveying Equipment

• Autonomous Machines and Robots

• Industrial Navigation Equipment

• L-Band Correction and Augmentation Systems

• Professional Timing and Positioning Systems

System Integration

The TX-G039 must be connected to a compatible multi-band GNSS or RTK receiver supporting the required GPS, BDS, GLONASS, Galileo, and L-Band signals.

The active antenna requires 3.0–16V DC bias power and consumes less than 45mA. Bias power is normally supplied through the RF cable by the connected receiver or a compatible external bias-tee circuit.

Before connection, confirm the receiver’s supported constellations and frequency bands, antenna-bias voltage, available current, 50-ohm input impedance, active-antenna detection, and short-circuit protection.

The standard TX-G039 uses a TNC female connector. The mating cable assembly should therefore use a compatible TNC male connector and suitable 50-ohm coaxial cable.

Install the antenna with the radome facing the sky. Confirm the mounting-hole positions, mechanical clearance, fasteners, equipment-surface strength, and sealing method against the approved dimension drawing before installation.

For optimum satellite reception, provide the clearest practical sky view and keep the antenna away from large metal obstructions, transmitting antennas, motors, switching power supplies, high-current cables, and other potential sources of signal blockage, reflection, or electromagnetic interference.

The product specification lists expected IP67 protection. The mating connector, mounting holes, equipment opening, cable interface, and complete installation must also be correctly sealed before outdoor use.

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

L-Band service availability, frequency compatibility, subscription requirements, correction coverage, and receiver support must be confirmed separately for the intended project.

Why Choose TOXU

TOXU provides GNSS and RTK antennas, aviation antennas, UAV antennas, embedded 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, connector and cable configuration, antenna-bias confirmation, installation analysis, RF testing, sample verification, and customized antenna development.

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

FAQ

Q: Which GNSS constellations does the TX-G039 support?

A: It supports compatible GPS, BDS, GLONASS, and Galileo signals within the frequency bands listed in the product specification.

Q: Does the TX-G039 support L-Band signals?

A: Yes. The specification includes L-Band support. A compatible receiver and corresponding correction or augmentation service are required.

Q: Is the TX-G039 an active or passive antenna?

A: It is an active GNSS antenna with an integrated low-noise amplifier providing a specified gain of 38±3dB.

Q: Can the antenna provide RTK positioning independently?

A: No. It receives and amplifies compatible satellite signals. RTK calculations and correction-data processing are performed by the connected GNSS receiver.

Q: What bias voltage does the antenna require?

A: The active circuit operates from 3.0V to 16V DC and consumes less than 45mA.

Q: Which connector does the TX-G039 use?

A: The standard configuration uses a TNC female connector. The mating cable assembly should use a compatible TNC male connector.

Q: What are the antenna dimensions?

A: The specified overall dimensions are 119.38 × 76.2 × 27.0mm.

Q: What is the difference between antenna gain and LNA gain?

A: The specified peak antenna gain is at least 4.0dBi at the center frequency with a 100mm ground plane. The integrated active amplifier provides a separate LNA gain of 38±3dB.

Q: Is the TX-G039 waterproof?

A: The specification lists expected IP67 protection. The connector, mounting holes, equipment opening, and complete installation must also be correctly sealed.

Q: Can TOXU customize the connector or matching cable assembly?

A: Yes. TOXU can evaluate compatible connectors, coaxial cable types, cable lengths, labels, packaging, and other integration requirements according to the project.