Applying time modulation to the joint transform correlator

1994 ◽  
Vol 33 (6) ◽  
pp. 1813 ◽  
Author(s):  
Thomas J. Grycewicz
Keyword(s):  
Joint Transform Correlator ◽  
Time Modulation

Differential Space Time Modulation with Distributed Transmit Antennas

2011 ◽  
Vol 30 (3) ◽  
pp. 759-762
Author(s):  
De-fu Sun ◽  
You-xi Tang ◽  
Shi-hai Shao ◽  
Shao-qian Li
Keyword(s):  
Space Time ◽  
Time Modulation

scholarly journals Nonreciprocity in Bianisotropic Systems with Uniform Time Modulation

2020 ◽  
Vol 125 (26) ◽  
Author(s):  
X. Wang ◽  
G. Ptitcyn ◽  
V. S. Asadchy ◽  
A. Díaz-Rubio ◽  
M. S. Mirmoosa ◽  
...  
Keyword(s):  
Time Modulation

A robust fringe-adjusted joint transform correlator for efficient object detection

2015 ◽  
Author(s):  
Paheding Sidike ◽  
Vijayan K. Asari ◽  
Mohammad S. Alam
Keyword(s):  
Object Detection ◽  
Joint Transform Correlator

scholarly journals Stacked Buck Converter: Current Ripple Elimination Effect and Transient Response

Energies ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 64
Author(s):  
Chien-Chun Huang ◽  
Yu-Chen Liu ◽  
Chia-Ching Lin ◽  
Chih-Yu Ni ◽  
Huang-Jen Chiu
Keyword(s):  
Transient Response ◽  
Dead Time ◽  
Control Method ◽  
Buck Converter ◽  
Modulation Method ◽  
Output Current ◽  
Time Modulation ◽  
Advantages And Disadvantages ◽  
Improvement Method ◽  
Current Ripple

To balance the cost and volume when applying a low output current ripple, the power supply design should be able to eliminate the current ripple under any duty cycle in medium and high switching frequencies, and considerably reduce filter volume to improve power density. A stacked buck converter was eventually selected after reviewing the existing solutions and discussing their advantages and disadvantages. A stacked buck converter is used as a basis to propose the transient response and output current ripple elimination effect, boundary limit control method, and low output ripple dead time modulation method to make individual improvements. The principle, mathematical derivation, small-signal model, and compensator design method of the improvement method are presented in detail. Moreover, simulation results are used to mutually verify the correctness and effectiveness of the improvement method. A stacked buck converter with 330-V input, 50-V output, and 1-kW output power was implemented to verify the effect of the low output current ripple dead time modulation. Experimental results showed that the peak-to-peak value of the output current ripple was reduced from 2.09 A to 559 mA, and the RMS value was reduced from 551 mA to 91 mA, thereby effectively improving the output current ripple.

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