A5101494673- Semiconductor Lasers and Optical Devices
- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Antenna Design and Analysis
- Analytical Chemistry and Sensors
- Microwave Engineering and Waveguides
- Ultra-Wideband Communications Technology
Xiamen University
2020-2021
In this paper, a novel self-mixing interferometer based on reflective phase modulation (RPM) method has been developed to perform micro-displacement reconstruction with nanometer accuracy. Broaden harmonic components spectrum of the signal is produced by employing high-frequency vibrating mirror as device. Phase demodulation implemented applying orthogonal algorithm subject spectrum, in which can be extracted from expanded Bessel function. The principle and processing approach are introduced...
A novel method called even-power phase modulation is proposed in a self-mixing displacement sensor to improve measuring accuracy, the best of our knowledge, which realized by combining fast algorithm with sinusoidal phase-modulation method. By performing interference system, spectrum harmonic components broadened. In this case, extracted first and second frequency domain contain rich information, target can be accurately reconstructed. The principle signal processing approach are introduced...
A simple UWB micro strip antenna is proposed. The radiation element a rectangular patch with ladder, and by cutting an inverted U-shaped slot in the to implement band-notched characteristic. simulated results show that return loss between 3GHz 14GHz less than-10dB, rejection band of from 5GHz 6GHz, good omni-directional performance most frequency band.