甚低频窄带天线预失真宽带发射方法
By optimizing the dual-tuned network and predistortion excitation signal, the problems of low radiation efficiency and excessive transient current of very low frequency antennas were solved, thereby improving the communication rate and power amplifier utilization and ensuring the stability and efficiency of the communication system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUNAN UNIV
- Filing Date
- 2026-01-23
- Publication Date
- 2026-07-17
AI Technical Summary
Insufficient antenna size leads to low radiation efficiency, low active capacity utilization of switching power amplifiers, and excessive transient current during frequency switching, which limits the development of VLF communication rate and power.
By constructing a virtual dual-tuned network, adjusting the transmitter characteristic impedance and load Q value, optimizing the component parameter combination, achieving broadband impedance matching, introducing a low-Q dummy load to suppress transient current overshoot, and using a predistorted excitation signal to optimize the current waveform.
It improves the data rate of very low frequency communication and the active power capacity utilization of switching power amplifiers, suppresses transient current fluctuations of antenna load after frequency switching, and enhances the stability and efficiency of communication systems.
Smart Images
Figure CN121770541B_ABST