Dynamic Dispersion-Compensation for Wideband Microwave Photonic Notch Filter With High Rejection and High-Resolution

2021 ◽  
Vol 27 (6) ◽  
pp. 1-13
Author(s):  
Siva A. Shakthi ◽  
Varun MK ◽  
Ravi Pant
Keyword(s):  
High Resolution ◽  
Dispersion Compensation ◽  
Notch Filter ◽  
Microwave Photonic ◽  
High Rejection ◽  
Dynamic Dispersion Compensation

A Tunable Microwave-Photonic Notch Filter Fabricated in CMOS Silicon

2008 ◽  
Author(s):  
M. S. Rasras ◽  
K.Y. Tu ◽  
S. S. Patel ◽  
D. M. Gill ◽  
Y. K. Chen ◽  
...  
Keyword(s):  
Notch Filter ◽  
Microwave Photonic ◽  
Tunable Microwave

A Method of Dispersion Compensation Based on Warped Frequency Transform

2013 ◽  
Vol 718-720 ◽  
pp. 2062-2067 ◽  
Author(s):  
Shang Chen Fu ◽  
Zhen Jian Lv ◽  
Ding Ma ◽  
Li Hua Shi
Keyword(s):  
High Resolution ◽  
Velocity Dispersion ◽  
Lamb Waves ◽  
Group Velocity Dispersion ◽  
Dispersion Compensation ◽  
Imaging Method ◽  
Finite Element Software ◽  
Damage Imaging ◽  
Resolution Imaging ◽  
Multi Mode

The use of Lamb waves for structural health monitoring (SHM) has complicated by its multi-mode character and dispersion effect, which impacts the damage positioning and high-resolution imaging. The group velocity dispersion curves of Lamb waves can be employed to warp the frequency axis, and then to establish warped frequency transform (WFT) to process Lamb waves. In this paper, received signals are directly compensated with warped frequency transform to suppress dispersion, and a new imaging method is proposed based on warped frequency transform. The propagation of Lamb waves in damaged aluminum plate is simulated by finite element software ABAQUS, results show that warped frequency transform can effectively compensate dispersive wave-packets, and high-resolution damage imaging can be obtained by the proposed method.

scholarly journals Microwave Photonic Image-Reject Mixer Based on a Tunable Microwave Photonic Filter With High Rejection

2018 ◽  
Vol 10 (6) ◽  
pp. 1-11 ◽  
Author(s):  
Xi Kong ◽  
Yuan Yu ◽  
Haitao Tang ◽  
Xinliang Zhang
Keyword(s):  
Microwave Photonic ◽  
Tunable Microwave ◽  
High Rejection

Widely Tunable, High-FSR, Coherence-Free Microwave Photonic Notch Filter

2008 ◽  
Vol 26 (8) ◽  
pp. 922-927 ◽  
Author(s):  
Erwin H. W. Chan ◽  
Robert. A. Minasian
Keyword(s):  
Notch Filter ◽  
Microwave Photonic
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