Overview

The TOXU TX-G47 is a full-band active GNSS choke ring antenna developed for professional satellite-navigation measurement systems requiring multi-constellation and multi-frequency signal reception.

The antenna supports the specified GPS L1, L2, and L5 signals; GLONASS L1 and L2 signals; BDS B1, B2, and B3 signals; and Galileo E2, E1, E5a, E5b, and E6 signals.

Its choke ring structure is designed to reduce multipath effects caused by reflected satellite signals. This makes the TX-G47 suitable for permanent reference stations, deformation monitoring equipment, geodetic surveying systems, and other fixed professional GNSS installations.

The antenna provides right-hand circular polarization, a specified gain of at least 7.0dBi at 90° elevation, an axial ratio of no more than 3dB, and a phase-center error of ±1mm.

An integrated low-noise amplifier provides 50±2dB gain, a noise figure below 1.5dB, and output VSWR below 2.0:1. The active circuit operates from 3.3–18V DC and consumes less than 65mA.

According to the supplied mechanical drawing, the TX-G47 has an overall diameter of 380mm and an overall height of 310.1±0.8mm. It uses a TNC RF connector and a separate 5/8"-11UNC mounting thread.

The TX-G47 is an active GNSS antenna only. Position calculation, RTK correction processing, reference-station communication, data storage, navigation output, and deformation analysis must be performed by compatible external receiver and processing equipment.

Key Features

Multi-Constellation GNSS Compatibility

Supports the specified GPS, GLONASS, BDS, and Galileo satellite-navigation signals for compatible professional GNSS receivers.

Multi-Frequency Signal Reception

Covers multiple satellite-frequency bands used by compatible surveying, monitoring, and reference-station receivers.

Choke Ring Structure

The choke ring antenna platform is designed to help reduce reception of reflected low-elevation signals and improve multipath control in suitable installations.

Stable Phase-Center Performance

The specified phase-center error is ±1mm, supporting professional GNSS measurement applications requiring stable antenna characteristics.

High Zenith Gain

The specified antenna gain at 90° elevation is at least 7.0dBi.

RHCP Polarization

Right-hand circular polarization is matched to compatible GNSS satellite signals.

50±2dB LNA Gain

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

Low Noise Figure

A specified noise figure below 1.5dB supports low-noise signal amplification across the supported operating bands.

Wide DC Input Range

The active circuit operates from 3.3–18V DC for integration with different compatible GNSS receiver platforms.

Professional Survey Mounting

The 5/8"-11UNC mounting thread supports installation on compatible surveying pillars, tribrach assemblies, mounts, and reference-station structures.

Technical Specifications

Supported Satellite Signals

Antenna Specifications

LNA Specifications

Mechanical and Environmental Specifications

Dimension Drawing

The following controlled drawing shows the principal mechanical dimensions, RF connector, and mounting structure of the TX-G47 GNSS choke ring antenna. All dimensions are expressed in millimeters unless otherwise specified.

According to the supplied drawing, the antenna has an overall diameter of 380mm and an overall height of 310.1±0.8mm.

The TNC interface is the antenna's RF connector. The separate 5/8"-11UNC thread is the mechanical mounting interface and should not be described as the RF connector.

Confirm the latest controlled drawing, connector gender, mounting structure, installation clearance, and cable-routing requirements before supporting-structure design or volume production.

Applications

• GNSS Continuously Operating Reference Stations

• RTK Base Stations

• Geodetic Surveying Systems

• Structural Deformation Monitoring

• Geological Monitoring Stations

• Earthquake-Monitoring Equipment

• Bridge and Dam Monitoring Systems

• Land-Surveying Equipment

• Scientific GNSS Observation Stations

• Professional Multi-Frequency GNSS Receivers

System Integration

The TX-G47 should be connected to a compatible multi-frequency GNSS receiver supporting the required GPS, GLONASS, BDS, and/or Galileo satellite signals.

The connected receiver must provide a compatible TNC RF connection through a suitable 50-ohm RF cable. Confirm the final TNC connector gender before selecting the cable assembly.

The receiver must supply a compatible antenna-bias voltage through the RF interface. The specified operating-voltage range is 3.3–18V DC, and current consumption is less than 65mA.

The 5/8"-11UNC mounting thread is intended for compatible professional surveying and reference-station mounting structures. The mounting platform should provide sufficient load capacity and mechanical stability for an antenna weighing up to 4.8kg.

Install the antenna in a stable location with a clear sky view. Keep it away from nearby walls, metal obstructions, transmitting antennas, reflective surfaces, motors, power equipment, and other potential sources of multipath or electromagnetic interference.

For permanent monitoring or reference-station applications, the supporting pillar and mounting structure should minimize vibration, settlement, rotation, and thermal movement.

Final system performance depends on the connected receiver, supported frequencies, correction source, installation environment, mounting stability, cable loss, antenna-bias quality, satellite visibility, and data-processing software.

Verification with the actual receiver, RF cable, mounting structure, and complete monitoring system is required before project deployment or volume production.

Why Choose TOXU

TOXU supplies GNSS antennas, communication antennas, RF cable assemblies, connectors, GNSS modules, receiver boards, and integrated RF hardware for equipment manufacturers, surveying-system suppliers, and positioning-system integrators.

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

TOXU can also provide matching RF cable assemblies, multi-frequency GNSS receiver modules, positioning boards, and system-integration support according to the customer's receiver and monitoring-system architecture.

With IATF16949 and ISO9001-certified manufacturing capabilities, TOXU supports prototype verification, product inspection, OEM requirements, customized RF interconnections, and stable volume-production delivery.

FAQ

Q: Which satellite signals does the TX-G47 support?

A: The supplied specification lists GPS L1/L2/L5, GLONASS L1/L2, BDS B1/B2/B3, and Galileo E2/E1/E5a/E5b/E6 signals.

Q: What type of antenna is the TX-G47?

A: It is a full-band active GNSS choke ring antenna intended for professional surveying, reference-station, and monitoring systems.

Q: What is the phase-center error?

A: The supplied specification states a phase-center error of ±1mm. Final system accuracy also depends on the receiver, installation, correction data, observation environment, and processing method.

Q: What LNA gain does the antenna provide?

A: The integrated low-noise amplifier provides a specified gain of 50±2dB with a noise figure below 1.5dB.

Q: What power supply does it require?

A: It requires 3.3–18V DC antenna-bias power through the RF interface and consumes less than 65mA.

Q: What is the difference between the TNC connector and the 5/8"-11UNC thread?

A: The TNC interface is used for RF signal transmission and DC bias power. The 5/8"-11UNC thread is used only for mechanical mounting.

Q: What are the antenna dimensions?

A: According to the supplied mechanical drawing, the overall dimensions are Ø380 × 310.1±0.8mm.

Q: Can the TX-G47 provide RTK coordinates independently?

A: No. It receives and amplifies GNSS signals. Position calculation, RTK processing, correction handling, and data output must be performed by the connected GNSS receiver and system software.

Q: Can TOXU provide a matching RF cable and receiver?

A: Yes. Please provide the receiver model, required frequencies, RF connector, cable length, antenna-bias voltage, installation environment, and expected order quantity.