High Gain TCA920 Choke Ring Antenna - China Suppliers & Factory for GNSS Systems
APEKS TCA930 Choke Ring Antenna is a high performance GNSS antenna for base station that covers full frequency satellite signal tracking of GPS, GLONASS, GALILEO, BDS, QZSS, IRNSS and SBAS correction service. The 2D Choke Ring Antenna with strong multipath suppression performance that specifically designed for applications as land and marine surveying, channel surveying, earthquake and landslide monitoring, deformation monitoring, and wharf container operations that require absolute positioning accuracy and multi-constellation support.
The unique 2D choke ring design of TCA930 ensures an excellent multipath reduction performance across all GNSS frequency bands including L-Band. And the antenna features the patented multi-point feeding technology to achieve greater phase center stability and hence effectively improve measurement accuracy. It is ideal for applications of CORS stations, bridge and building deformation monitoring or geological monitoring due to its sub-millimeter phase center stability.
The strong ability to receive low elevation signals with high gain and wide beam width makes TCA930 an excellent choice for tracking visible satellites and provide stable and precision GNSS data under complex environments, such as obstructed environment of tree lines or construction.
The antenna LNA features an excellent out-of-band rejection performance, which can suppress the EMI, providing the stability and reliability of GNSS signals. Also, it effectively avoids disconnection dangerous when receivers are being interfered by wireless communication systems, for example power grid, communication base station or radio modem applications.
The TCA903 cover is made of GFRP material and is structurally strong and reliable. The newly designed choke rings are treated with a more robust double treatment for longer lasting durability in harsh environments. The IP67 ruggedized cover is also designed for added protection for inside antenna avoid from dust and water. The antenna MTBF is over 30000 hours, which ensures long-time outdoor operation in challenging environments of high low temperature, high humidity and high salt fog.
| Signal Tracking | |
| GPS | L1/L2/L5/L-Band |
| GLONASS | L1/L2/L3 |
| GALILEO | E1/E5a/E5b/E6 |
| BDS | B1/B2/B3 |
| QZSS | L1/L2/L5/L6 |
| SBAS | L1/L5 |
| NavIC (IRNSS) | L5 |
| LNA Specification | |
| Nominal Impedance | 50Ω |
| Polarization | RHCP |
| Axial Ratio | ≤2dB |
| Gain at Zenith (90°) | 1164-1300MHz 7.0dBi (maximum) 1525-1615MHz 6.5dBi (maximum) |
| LNA Gain | 50dB (typical) |
| Noise Figure | ≤2dB |
| Output/Input VSWR | ≤2.0 |
| Operation Voltage | +3.3VDC to +12VDC |
| Operation Current | 60mA (maximum) |
| Group Delay Ripple | ＜5ns |
| Physical Properties | |
| Dimensions | 79mm * 312mm |
| Connector | TNC female |
| Weight | ≤10.5KG |
| Mounting | BSW5/8"-11 screw, depth > 22mm |
| Environmental Limits | |
| Temperature | Operating: -40℃ to +85℃ Storage: -55℃ to +85℃ |
| Humidity | 95% non-condensing |
| Protection | IP67 |
| Regulatory Compliance | IGS, NGS, CE, FCC, RoHS |
The TCA930 supports full-frequency satellite signal tracking across multiple constellations, including GPS, GLONASS, GALILEO, BDS, QZSS, NavIC (IRNSS), as well as SBAS correction services.
It features a unique 2D choke ring design combined with patented multi-point feeding technology. This configuration ensures excellent multipath reduction performance across all GNSS frequency bands, resulting in high phase center stability.
Yes. The antenna is designed to receive low-elevation signals with high gain and a wide beam width, allowing it to maintain a stable and precise GNSS data connection even in challenging environments like tree lines or construction sites.
The antenna's LNA features advanced out-of-band rejection performance that suppresses electromagnetic interference (EMI). This prevents signal disconnection when operating near wireless communication systems such as power grids, communication base stations, or radio modems.
The TCA930 has an IP67-rated cover made of GFRP material, offering robust protection against dust and water. With a Mean Time Between Failures (MTBF) of over 30,000 hours, it is built for long-lasting outdoor operation under extreme temperatures, high humidity, and salt fog.