Untangling Parasitic Reflection in Phase MeasuringDeflectometry by Multi-frequency Phase-shifting

2021 ◽  
Author(s):  
Yuk-ching LEUNG ◽  
Lilong Cai
Keyword(s):  
Phase Shifting ◽  
Frequency Phase

scholarly journals A Simple Phase Shifting Technique for an Injection Locked Oscillator

2016 ◽  
Vol 6 (6) ◽  
pp. 1303-1306 ◽  
Author(s):  
M. Abdul-Niby ◽  
M. Alameen ◽  
H. Baitie
Keyword(s):  
Phase Shifters ◽  
Phase Shifting ◽  
Phase Locked Loops ◽  
Frequency Synthesis ◽  
High Frequencies ◽  
Shift Control ◽  
Oscillating Systems ◽  
Free Running ◽  
Simple Phase ◽  
Frequency Phase

In Self Oscillating systems, locking of the oscillators can take place for injected signals close in frequency to nth harmonics of the free-running frequency. In this paper, we present a simple design for digital phase shift control by using a harmonically injection locked oscillator (ILO) of 35MHz frequency. Phase shifters at high frequencies are essential in many communication system applications such as frequency synthesis, quadrature signal generation and phase locked loops (PLLs).

scholarly journals Enhanced two-frequency phase-shifting method

2016 ◽  
Vol 55 (16) ◽  
pp. 4395 ◽  
Author(s):  
Jae-Sang Hyun ◽  
Song Zhang
Keyword(s):  
Phase Shifting ◽  
Phase Shifting Method ◽  
Frequency Phase

scholarly journals Phase Extraction Algorithm Based on the Spatial Carrier-Frequency Phase-Shifting Gradient

2019 ◽  
Vol 11 (6) ◽  
pp. 1-7
Author(s):  
Haoren Zou ◽  
Liyun Zhong ◽  
Jiaosheng Li ◽  
Zhenda Sun ◽  
Yicheng Liu ◽  
...  
Keyword(s):  
Carrier Frequency ◽  
Phase Shifting ◽  
Phase Extraction ◽  
Extraction Algorithm ◽  
Frequency Phase

Fast and high precision spatial carrier frequency phase shifting algorithm based on the second order difference

2020 ◽  
Vol 454 ◽  
pp. 124310 ◽  
Author(s):  
Hanlin Wang ◽  
Zhenda Sun ◽  
Liyun Zhong ◽  
Jiaosheng Li ◽  
Haoren Zou ◽  
...  
Keyword(s):  
High Precision ◽  
Carrier Frequency ◽  
Second Order ◽  
Phase Shifting ◽  
Order Difference ◽  
Frequency Phase
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