Antennas and accessories

Antennas and accessories

Reference Station Antenna HX-CGX611A

The HX-CGX611A is a four-system full-band miniature choke antenna encompassing BDS, GPS, GLONASS, an...

The HX-CGX611A is a four-system full-band miniature choke antenna encompassing BDS, GPS, GLONASS, and GALILEO, meeting the high-precision and multi-system compatibility requirements of current surveying equipment. It can be widely used in high-precision applications such as geodetic mapping, marine surveying, waterway surveying, dredging surveying, earthquake monitoring, bridge deformation monitoring, landslide monitoring, and port container operations.


Key Features
● Supports full-frequency signals of four GNSS systems
● High antenna gain with excellent satellite reception at low elevation angles
● Stable phase center ensures sub-millimeter positioning accuracy
● Strong anti-interference capability, able to withstand harsh working environments
● Reliable structure, compact size, and light weight

Full-band signal compatibility

It covers the full frequency bands of the four major GNSS systems, meeting the current requirements for multi-system compatibility and interoperability.


Highly Stable Phase Center
The antenna features a unique choke ring structure design, providing excellent resistance to multipath interference. The antenna section adopts a distinctive four-feed-point design, achieving high coincidence between the phase center and geometric center, thereby minimizing measurement errors caused by the antenna. With phase center stability at the submillimeter level, it is an ideal choice for applications such as ground-based reference stations, bridge and high-rise deformation monitoring, and geological monitoring.


Tracking in Complex Environments
The antenna unit boasts high gain and a wide beam pattern, ensuring strong signal reception even at low elevation angles. This enables rapid satellite locking and stable output of GNSS navigation signals in challenging environments with obstructions.


High Structural Reliability
Built with a robust structure and multiple protective measures, the antenna achieves an IP67 protection rating, safeguarding its interior from dust, ultraviolet rays, and water. With an MTBF (Mean Time Between Failures) exceeding 30,000 hours, it maintains long-term reliable operation under various harsh conditions, including extreme temperatures, high humidity, and salt spray.


Powerful Anti-Interference Performance
The antenna’s LNA (Low Noise Amplifier) delivers outstanding out-of-band rejection, effectively suppressing unwanted electromagnetic signals. This helps prevent interference from sources such as power grids, communication base stations, and radio stations, significantly reducing the risk of system signal loss.


 

Technical Specifications

Antenna characteristics

Frequency range

GPS L1/L2/L5

BDS B1/B2/B3

GLONASS L1/L2/L3

GALILEO E1/E5a/E5b/E6

QZSS L1/L2/L5/L6

IRNSS L5

SBAS L1/L5

L-Band

 

Impedance

50 ohms

polarization mode

Right-hand circular polarization

Antenna axial ratio

≤3dB

Horizontal plane coverage angle

360°

Output standing wave

≤2.0

Maximum gain

6.5dBi

Phase center error  

±1mm

Low noise amplifier specifications

Gain

50±2dB

 

Noise figure

≤2dB

Output standing wave

≤2.0

Inner flatness

±2dB

Operating voltage

+3.3+12VDC

Operating current

60mA

Differential transmission delay

5ns

Structural characteristics

Antenna size

Φ185*148mm

weight

 

 

≤2.1kg

 

Connector type

TNC vulva

Installation method

5/8"×11 threaded mounting hole, installation length 12–14 mm, recommended tightening torque 4–5 N·m

Work environment

Operating temperature

-40℃~+85

Storage temperature

-55℃~+85℃

Humidity

95% non-condensing

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