1. Functional Description
WKG135BR29Y00 is a high-performance BeiDou (BDS) single-constellation positioning module with a compact size of 43 × 43 × 11.7 mm. It is based on the AT9850B SoC from Zhongke Micro, which integrates an RF front-end, digital baseband, multi-frequency BeiDou signal processing engine, and power management unit, providing high integration and simplified external circuitry. The module supports BeiDou-2 and BeiDou-3.
Leveraging proprietary fast acquisition technology, WKG135BR29Y00 can quickly capture a large number of visible satellites, enabling fast and accurate positioning. It significantly improves positioning performance in challenging environments such as urban canyons. The module integrates a high-performance embedded CPU and supports a maximum position update rate of up to 10 Hz, making it suitable for high-dynamic applications sensitive to positioning latency. It also features dedicated anti-interference hardware acceleration circuitry for rapid detection and suppression of RF interference.
With high sensitivity, low power consumption, and cost efficiency, WKG135BR29Y00 is suitable for applications such as vehicle navigation, handheld positioning devices, and automotive rearview mirrors. Based on an integrated navigation SoC architecture, the module supports high-accuracy positioning and timing applications while offering high integration, high performance, and low power consumption. It is applicable to automotive navigation, smartphones, IoT devices, and UAV applications.
2. Key Features
Supports BDS-2 / BDS-3 (B1I/B1C/B2I/B3I/B2a/B2b)
Supports A-BDS
Cold start sensitivity: -148 dBm
Hot start sensitivity: -156 dBm
Reacquisition sensitivity: -160 dBm
Tracking sensitivity: -162 dBm
Position accuracy: 1m (CEP50)
TTFF: ≤20s
Operating Current: ≤ 30 mA
Standby Current: ≤ 30 µA
Integrated LNA
Stacked Ceramic Antenna (25 × 25 × 4 mm + 35 × 35 × 4 mm)
Fast hot start (<1.5s) with onboard capacitor
Standard NMEA-0183 output
3. Applications
Vehicle navigation and tracking
Power timing / 4G/5G synchronization
IoT positioning devices
UAV (drones)
Portable device
4. Specification
Module Number | WKG135BR29Y00 |
Chipset | AT9850B |
Module Size | 59*48.6*18.6mm |
Satellite System | BDS |
Band | B1I/B1C/B2I/B3I/B2a/B2b |
Tracking Sensitivity | -162dBm |
Re-acquisition Sensitivity | -160dBm |
Cold Start Time | ≤20s |
Warm Start Time | ＜1.5s |
Hot Start Time | ＜1s |
UART Baud Rate | 4800bps-115200bps, default:115200bps |
Output Protocol | NMEA0183 |
Supply Voltage | DC 3.3V to 5.5V |
Update Rate | 1Hz default / up to 10Hz |
Position Accuracy | ＜1m (CEP50) |
Operating Temperature | –35 °C to +85 °C |
Storage Temperature | –40 °C to +80 °C |
