Circular polarized antenna polarization purity testing method

　　Circular Polarized Antenna Polarization Purity Testing: Professional Solutions for Global Clients

　　In the fast-paced development of 5G communication, satellite navigation, and IoT industries, circular polarized antennas have become core components for stable signal transmission. Among their key performance indicators, polarization purity directly determines signal quality, anti-interference ability, and communication distance. To help you ensure product reliability and gain a competitive edge in the global market, we provide a full-set of professional polarization purity testing services tailored to circular polarized antennas.

　　1. Core Testing Principles & Key Indicators

　　Our testing method is based on the electromagnetic wave polarization characteristic theory, focusing on two core indicators to evaluate polarization purity:

　　Axial Ratio (AR): The key criterion for measuring circular polarization quality. A lower axial ratio (ideally ≤3dB for high-performance antennas) indicates higher polarization purity. Our testing can accurately capture axial ratio data across the entire operating frequency band.

　　Polarization Isolation: Measures the signal crosstalk between the desired circular polarization and unwanted polarization (e.g., linear polarization components). We ensure isolation meets industry standards (typically ≥25dB) to avoid signal interference.

　　2. Advanced Testing Process & Equipment

　　To guarantee testing accuracy and efficiency, we adopt a standardized 4-step process supported by world-class equipment:

　　Pre-Testing Calibration: Use high-precision standard antennas (traceable to international metrology institutions) to calibrate testing systems, eliminating equipment errors.

　　Antenna Positioning & Fixing: Secure the DUT (Device Under Test) on a multi-axis rotation platform, ensuring alignment with the testing signal source (precision up to ±0.1°).

　　Multi-Angle & Wide-Band Testing: Cover 0°-360° polarization angle scanning and the full operating frequency range of the antenna. Collect axial ratio, phase difference, and isolation data in real time via a vector network analyzer (Keysight/National Instruments).

　　Data Analysis & Report Generation: Generate a detailed test report with visualized curves (axial ratio vs. frequency, polarization isolation vs. angle) and compliance judgments. All data is traceable and meets ISO/IEC 17025 standards.

　　3. Why Choose Our Testing Services?

　　High Precision & Reliability: Testing accuracy for axial ratio reaches ±0.1dB, far exceeding industry average levels; all equipment is calibrated annually to ensure data credibility.

　　Fast Turnaround: For standard antenna models, complete testing and report delivery can be done within 3-5 working days, accelerating your product launch cycle.

　　Customized Solutions: Adapt to various antenna types (e.g., patch, helical, array circular polarized antennas) and application scenarios (automotive, satellite terminals, UAVs), providing personalized testing plans.

　　Global Compliance Support: Our reports are recognized by major certification bodies (FCC, CE, ROHS) to help your products smoothly enter European, American, and Asian markets.

　　4. Target Clients & Cooperation Directions

　　We serve global clients in the following fields:

　　Communication equipment manufacturers (5G base station, satellite communication terminal producers)

　　Automotive electronics companies (intelligent driving antenna suppliers)

　　Aerospace & defense enterprises (satellite navigation antenna developers)

　　Research institutions & universities (antenna R&D laboratories)

　　We offer flexible cooperation models:

　　One-time testing service for batch products

　　Long-term cooperation for R&D prototype verification

　　On-site testing support for large-scale antennas