KXAT401S CRPA

KXAT401S_4B1L1E1 is a CRPA (Controlled Reception Pattern Antenna) protection-type antenna. It can receive, amplify, down-convert, filter, and process 4-channel BDS_B1, GPS_L1, and GAL_E1 frequency point signals. Operating on a 9V~36V voltage supply, it consists of an antenna array, RF components, anti-interference processing components, and a power interface component. It features protection capabilities against abnormal electromagnetic signals from three directions. The antenna's frequency signal processing module is highly integrated, characterized by a low noise figure, high gain, excellent element consistency, and low mutual coupling. With its compact size, low power consumption, and simple application, it is suitable for various scenarios sensitive to electromagnetic environments and dependent on high-precision positioning, significantly enhancing the stability of positioning equipment in complex electromagnetic environments.

Description

Tri-Band Multi-Constellation Support: Seamlessly receives and processes 4 channels of BDS_B1, GPS_L1, and GAL_E1 signals for comprehensive global navigation coverage.

3-Directional Signal Integrity Protection: Effectively shields against abnormal electromagnetic signals from up to three distinct directions, ensuring robust performance in complex environments.

Superior RF Performance: Features high gain, low noise figure, excellent array element consistency, and minimal mutual coupling for precise and reliable signal processing.

Compact & Low-Power Design: Highly integrated modules with a small footprint and low power consumption make it exceptionally easy to deploy in space-constrained applications.

Wide Power Supply Compatibility: Operates reliably on a versatile 9V to 36V DC power supply, making it highly adaptable for various industrial and vehicle platforms.

Specification

Main Technical Specifications
Antenna Array	Signal Processing
•Antenna Elements: 4-channel B1/L1 antenna array •Input Frequency: BDS_B1: 1561.098MHz ± 2.046MHz GPS_L1: 1575.42MHz ± 10.23MHz GAL_E1: 1575.42MHz + 1.023MHz •Input Impedance: 50Ω •Element Gain: ≥ 1dBi @ 90° elevation; ≥ -6dBi @ 45° elevation; ≥ -9dBi @ 30° elevation •Axial Ratio: ≤ 3dB @ 90° elevation; ≤ 6dB @ 60° elevation •Isolation: ≥ 15dB	•Number of Channels: 4 channels for BDS_B1, GPS_L1, and GALILEO_E1 •Signal Types: Wideband, narrowband, frequency sweep, pulse, etc. •Signal Processing Bandwidth: 20MHz •Number of Simultaneous Processing Directions: 3 •Single Direction Performance: ≥ 105dB @ -130dBm •Three Direction Performance: ≥ 95dB @ -130dBm


Positioning Performance (Optional for Integrated Models)	Reliability
•Cold Start Time: ≤ 60s (including self-test time) •Hot Start Time: ≤ 10s •Positioning Accuracy: ≤ 10m	•Mean Time Between Failures (MTBF): ≥ 2000 hours •Continuous Operation Time: ≥ 24h


Environmental Adaptability
•Operating Temperature: -40°C to +65°C, 10% to 90% RH (non-condensing) •Storage Environment: -45°C to +70°C, 10% to 90% RH (non-condensing)

Power Supply and Power Consumption	Weight
•Input Voltage: +9V to +36V •Power Consumption (Normal Temperature): ≤ 10W	≤ 200g

Interfaces and Mechanical Dimensions
Interface
•RF Connector: SMA-K Impedance: 50Ω Output Power Range: -55dBm to -65dBm •Power/Data Interface: J30J-9ZKP, pin definitions are as follows in Table 1:

No.	Pin Definition	Signal Description	Remarks
1	+9V~+36V	Power Input	Antenna Power Supply
2	+9V~+36V
3	GND	Power Ground
4	GND
5	NC		Interface definition can be modified as per user needs
6	RS232_RXD	RS232 data port for integrated models
7	NC
8	RS232_TXD
9	NC	NC