Distributed Phase Correction Technique

2013 ◽  
Author(s):  
Suwen Yang ◽  
Frankie Y. Liu
Keyword(s):  
Phase Correction ◽  
Correction Technique

Fourier-Domain Analysis of Complex Line Shapes

1989 ◽  
Vol 43 (1) ◽  
pp. 38-44 ◽  
Author(s):  
J. M. Bostick ◽  
L. A. Carreira
Keyword(s):  
Phase Correction ◽  
Fourier Domain ◽  
Phase Information ◽  
Line Shapes ◽  
Target Spectrum ◽  
Correction Technique ◽  
Subsequent Phase ◽  
Domain Phase ◽  
Anti Stokes ◽  
Previous Phase

The development of a method of phase correction is discussed. Previous phase-correction methods have often required the input of an operator in order to extract phase information from the target spectrum. The use of this Fourier-domain phase-correction technique is discussed specifically in terms of its application to coherent anti-Stokes Raman spectra. The extraction of phase information and subsequent phase correction are discussed.

Phase Aberration Correction in Two Dimensions Using a Deformable Array Transducer

1995 ◽  
Vol 17 (3) ◽  
pp. 227-247
Author(s):  
Loriann L. Ries ◽  
Stephen W. Smith
Keyword(s):  
Adaptive Optics ◽  
Ultrasonic Transducer ◽  
Phase Correction ◽  
Two Dimensions ◽  
Ultrasound Images ◽  
Two Dimensional ◽  
Ultrasound Beam ◽  
Dimensional Array ◽  
Electronic Phase ◽  
Correction Technique

Phase aberrations due to tissue inhomogeneities degrade medical ultrasound images by disrupting the ultrasound beam focus. Currently, phase correction algorithms are implemented by adjusting the electronic phase delays used to steer and focus the ultrasound beam. This means that a two-dimensional array is necessary to completely correct two-dimensional aberrations in tissue. However, two-dimensional arrays are a complex option due to their large number of elements and poor sensitivity. Instead of using a full two-dimensional array, a new technique is proposed, similar to one used in adaptive optics, which uses a deformable transducer of significantly fewer channels for two-dimensional phase correction. Phase correction in azimuth is achieved by altering the electronic phase delay of the element. However, phase correction in elevation is achieved by tilting the element in elevation with a piezoelectric actuator. Comparison of simulations of the new phase correction transducer versus the conventional phase correction technique have shown that a deformable 1 × N or 2 × N transducer can approach the image quality of a 4 × N two-dimensional array or greater. A prototype 1 times 32 array with eight low frequency piezoelectric actuators has been constructed such that every four ultrasonic transducer elements in azimuth are mounted on one independently controlled actuator. This prototype transducer was used to test the ability of a deformable array to produce real time phased array scans and to simulate on-line phase correction by tilting the elements in the elevation direction.

scholarly journals Flat lens design using phase correction technique for horn antenna applications

2021 ◽  
Vol 19 (1) ◽  
pp. 213
Author(s):  
Nur Hazimah Syazana Abdul Razak ◽  
Nur Shahira Mat Hussain ◽  
Nurul Hazlina Noordin ◽  
Syamimi Mardiah Shaharum ◽  
Ahmad Syahiman Mohd Shah ◽  
...  
Keyword(s):  
Horn Antenna ◽  
Phase Correction ◽  
Lens Design ◽  
Correction Technique ◽  
Flat Lens

High speed and low side lobe optical phased array steering by phase correction technique

2013 ◽  
Author(s):  
Yadong Jin ◽  
Aimin Yan ◽  
Zhijuan Hu ◽  
Zhenyu Zhao ◽  
Wangzhou Shi
Keyword(s):  
High Speed ◽  
Phased Array ◽  
Side Lobe ◽  
Phase Correction ◽  
Correction Technique ◽  
Optical Phased Array

A VHF RFPGA with adaptive phase-correction technique

2013 ◽  
Vol 34 (8) ◽  
pp. 085017
Author(s):  
Xu Cheng ◽  
Guiliang Guo ◽  
Yuepeng Yan ◽  
Rongjiang Liu ◽  
Yu Jiang
Keyword(s):  
Phase Correction ◽  
Correction Technique

A 90 nm CMOS V-Band Low-Noise Active Balun With Broadband Phase-Correction Technique

2011 ◽  
Vol 46 (11) ◽  
pp. 2583-2591 ◽  
Author(s):  
Hsi-Han Chiang ◽  
Fu-Chien Huang ◽  
Chao-Shiun Wang ◽  
Chorng-Kuang Wang
Keyword(s):  
Phase Correction ◽  
Low Noise ◽  
V Band ◽  
Correction Technique ◽  
Active Balun

A 63 GHz low-noise active balun with broadband phase-correction technique in 90 nm CMOS

2010 ◽  
Author(s):  
Hsi-Han Chiang ◽  
Fu-Chien Huang ◽  
Chao-Shiun Wang ◽  
Chorng-Kuang Wang
Keyword(s):  
Phase Correction ◽  
Low Noise ◽  
Correction Technique ◽  
Active Balun
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