一种近场高功率密度辐射实现方法
By combining electromagnetic simulation and model correction with electromagnetic protection and RF circuit calibration, the problem of inaccurate near-field high power density radiation measurement results was solved, achieving high-precision and low-cost near-field high power density radiation testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHENGDU SIWI POWER ELECTRONICS TECH
- Filing Date
- 2022-07-21
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing technology, the measurement results of near-field high power density radiation are inaccurate and costly, mainly due to the large measurement error caused by the electromagnetic coupling phenomenon between the near-field probe and the transmitting antenna, and the lack of effective methods for constructing and measuring near-field high power radiation.
A radiating antenna model was established using electromagnetic simulation software, parameters were optimized and simulations were performed, and the model was corrected by comparing and contrasting with mid- and far-field test data. Electromagnetic protection and RF circuit calibration were set, the distance between the device under test and the radiating antenna and the power amplifier output power were controlled, and a rectangular waveguide antenna model and CST three-dimensional electromagnetic field simulation software were used to eliminate electromagnetic interference and calibrate the RF circuit loss.
It enables accurate testing of near-field high power density radiation, reduces testing costs, and improves testing accuracy and operability. It is suitable for high power density tolerance testing of different materials and electromagnetic devices.
Smart Images
Figure CN115292912B_ABST