Application Cases

Experiment Name: Power Amplifier-Driven Signal Transceiver Testing for a Novel Long-Wave Communication Antenna

Experimental Direction: Long-Wave Antenna Devices

Experimental Equipment: ATA-3090C power amplifier, signal generator, oscilloscope, signal analyzer, etc.

Experimental Objective:
First, a signal generator is used to produce an alternating current signal. This signal is amplified by a power amplifier to an effective value of 30V and connected to a novel magnetoelectric antenna to drive mechanical vibration. Due to the inverse magnetoelectric effect of the antenna, it radiates electromagnetic waves outward. A solenoid coil serves as the receiving end for the electromagnetic waves, converting the radiated electromagnetic signals back into electrical signals. The amplitude and spectral distribution of the signals are then detected using an oscilloscope and a dynamic signal analyzer.

Experimental Procedure:
A modulated signal is generated using a signal generator and amplified by a power amplifier to drive the antenna with an effective voltage of 30V, transmitting the signal outward. The transmitted signal is received by a coil, and after amplification, filtering, detection, and comparison, the demodulated signal is obtained, completing a cycle of communication signal transmission. Additionally, a signal analyzer is used to evaluate the signal strength and spectral distribution.

Experimental Results:
The measurement results show that the 30V signal amplified by the power amplifier can effectively drive the long-wave antenna device to radiate signals outward. Spectral analysis reveals two distinct resonance peaks in the magnetoelectric antenna structure, with an inverse magnetoelectric conversion coefficient as high as 1.4 Oe/V. The antenna achieves electromagnetic radiation at the nT level at a distance of 0.8 meters, and the radiation magnetic field exhibits a cubic decay relationship with distance.

Communication test results indicate that the magnetoelectric antenna structure has a wide communication bandwidth and is capable of transmitting 1kHz modulated signals.

Parameters of the ATA-3090C Power Amplifier Used in the Experiment: