Application Cases

Experiment Name: Testing of Magnetoelectric Antenna Transmission Performance

Experiment Content:The magnetoelectric antenna, prepared based on the magneto-electric coupling effect using magnetostrictive and piezoelectric materials, is a type of mechanical antenna. When used as a transmitting antenna, a function generator is required to produce an excitation signal, which is then amplified by a power amplifier and applied to the magnetoelectric antenna to ensure effective driving. This process allows for the comprehensive characterization of the electromagnetic wave radiation properties of the magnetoelectric antenna.

Research Direction:Magnetoelectric Antennas

Testing Equipment:ATA-3080 Power Amplifier, Function Generator, Oscilloscope, Lock-in Amplifier, etc.

Figure: Schematic Diagram of the Experimental Setup for Testing Magnetoelectric Antenna Transmission Performance

Figure: Photograph of the Experimental Setup for Testing Magnetoelectric Antenna Transmission Performance

Experiment Process:The magnetoelectric antenna serves as the transmitter, while a coil acts as the receiver in a low-frequency communication experiment. The excitation signal generated by the function generator is amplified by the power amplifier and applied to the magnetoelectric antenna to radiate electromagnetic waves. The coil captures the low-frequency signal, which is then read by the oscilloscope and lock-in amplifier. The radiation intensity of the magnetoelectric antenna can be adjusted by regulating the amplification factor of the power amplifier to meet the testing requirements under different conditions.

Experiment Results:By adjusting the excitation signal of the magnetoelectric antenna using the power amplifier, the effective input voltage range of the magnetoelectric antenna was characterized as 3V to 200V. When the input voltage is below 3V, the magnetoelectric antenna does not vibrate and cannot produce effective radiation. When the input voltage exceeds 200V, the radiation reaches saturation, and further increasing the input voltage does not effectively enhance the radiation intensity of the magnetoelectric antenna. With the support of the power amplifier, the transmission of amplitude-modulated (AM) signals over a distance was successfully verified, providing important technical support for low-frequency communication using magnetoelectric antennas.

Power Amplifier Recommendation:ATA-3080C Power Amplifier

Figure: Specifications of the ATA-3080C Power Amplifier

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