Design Methods of Wideband Differential Phase Shifters

2019 ◽  
pp. 815-818
Author(s):  
Hui-yong Zeng ◽  
Qin Zhang ◽  
Bin-feng Zong ◽  
Yan Zhao ◽  
Shi-qiang Wang
Keyword(s):  
Design Methods ◽  
Phase Shifters ◽  
Differential Phase

Differential phase shifters using corrugated, ridge, and fin loaded waveguides

2009 ◽  
Vol 19 (5) ◽  
pp. 561-567 ◽  
Author(s):  
Angel Mediavilla ◽  
José A. Pereda ◽  
Oscar González ◽  
Alicia Casanueva ◽  
Joseph Helszajn ◽  
...  
Keyword(s):  
Phase Shifters ◽  
Differential Phase

Multi-Way and Poly-Phase Aligned Feed-Forward Differential Phase Shifters

2014 ◽  
Vol 62 (6) ◽  
pp. 1312-1321 ◽  
Author(s):  
Yuk Shing Wong ◽  
Shao Yong Zheng ◽  
Wing Shing Chan
Keyword(s):  
Phase Shifters ◽  
Feed Forward ◽  
Differential Phase

scholarly journals Acoustic Wave Reflection Control Based on Broadband Differential Phase Shifters

2021 ◽  
Vol 7 ◽  
Author(s):  
Zifu Qin ◽  
Xiaohan Liu ◽  
Chu Ma
Keyword(s):  
Phase Shift ◽  
Acoustic Waves ◽  
Phase Shifter ◽  
Wave Reflection ◽  
Phase Shifters ◽  
Complex Phase ◽  
Reflected Waves ◽  
Differential Phase ◽  
Location Patterns ◽  
Working Frequency

Controlling the flow of acoustic waves has broad applications in acoustic imaging, communication, energy harvesting, audio systems, etc. Metasurfaces have been developed for wave control. In this work we propose the design of broadband differential phase shifters for acoustic reflected waves, which can achieve nearly constant phase shift values over a broad frequency ranges. We further demonstrate the design of a broadband differential π phase shifter that works in the frequency range of (10 kHz, 16 KHz) and its applications in acoustic metasurfaces for steering and focusing of reflected acoustic waves. The metasurfaces we designed have the following advantages: 1) The metasurface is formed with binary patterns instead of more complex phase discretization steps, thus the metasurface realization is less complex for fabrication and assembly. 2) The phase shift values of the two basic phase shifter elements are broadband, thus we do not need to fabricate new elements for each frequency. Rearranging the same elements into different location patterns would allow us to tune the working frequency of the metasurfaces.

Microwave Phase Shifters Using Ferroelectric (Ba,Sr)TiO3 Films

2002 ◽  
Vol 720 ◽  
Author(s):  
Won-Jeong Kim ◽  
Eun-Kyoung Kim ◽  
Seung-Eon Moon ◽  
Seok-Kil Han ◽  
Su-Jae Lee ◽  
...  
Keyword(s):  
Phase Angle ◽  
Phase Shifter ◽  
Metal Layer ◽  
Bias Field ◽  
Phase Shifters ◽  
Metal Loss ◽  
Differential Phase ◽  
Bst Films ◽  
Dc Bias ◽  
Dc Bias Field

AbstractThe ferroelectric (Ba0.6Sr0.4)TiO3 (BST) films were prepared on (001) MgO single crystals by pulsed laser deposition. Coplanar waveguide (CPW) type phase shifters controlled by external dc bias field were fabricated on BST films using a 2 μm thick metal layer to reduce metal loss. Microwave properties of the CPW phase shifter were measured using a HP 8510C vector network analyzer from 0.1 – 20 GHz. The fabricated CPW phase shifters (8 mm long) exhibited differential phase angle of 100 ° at 10 GHz with a dc bias field of less than 80 kV/cm between center and ground conductors. Furthermore, a stable differential phase angle (102 ± 3.5 o) was observed from another CPW while changing the power of incident microwave from -10 to +30 dBm. Gap size dependent dielectric constant of the BST film was observed and a simple correction method was suggested in the paper. These results demonstrate the possible application of ferroelectric tunable devices on a high power tunable wireless telecommunication.

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