Mm-wave imaging results based on a frequency scanning delay line waveguide horn antenna array

2014 ◽  
Vol 56 (12) ◽  
pp. 2851-2860 ◽  
Author(s):  
Belén Larumbe-Gonzalo ◽  
Asier Ibáñez-Loinaz ◽  
Ramón Gonzalo ◽  
Jorge Teniente
Keyword(s):  
Antenna Array ◽  
Delay Line ◽  
Horn Antenna ◽  
Frequency Scanning ◽  
Imaging Results ◽  
Wave Imaging

scholarly journals Micro Non-Uniform Linear Array (MNULA) for Ultrasound Plane Wave Imaging

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 640
Author(s):  
Yujia Tang ◽  
Zhangjian Li ◽  
Yaoyao Cui ◽  
Chen Yang ◽  
Jiabing Lv ◽  
...  
Keyword(s):  
Plane Wave ◽  
Linear Array ◽  
Near Field ◽  
Uniform Linear Array ◽  
Imaging Technology ◽  
Linear Arrays ◽  
Imaging Quality ◽  
Imaging Results ◽  
Wave Imaging ◽  
Laboratory Technology

Ultrasound plane wave imaging technology has been applied to more clinical situations than ever before because of its rapid imaging speed and stable imaging quality. Most transducers used in plane wave imaging are linear arrays, but their structures limit the application of plane wave imaging technology in some special clinical situations, especially in the endoscopic environment. In the endoscopic environment, the size of the linear array transducer is strictly miniaturized, and the imaging range is also limited to the near field. Meanwhile, the near field of a micro linear array has serious mutual interferences between elements, which is against the imaging quality of near field. Therefore, we propose a new structure of a micro ultrasound linear array for plane wave imaging. In this paper, a theoretical comparison is given through sound field and imaging simulations. On the basis of primary work and laboratory technology, micro uniform and non-uniform linear arrays were made and experimented with the phantom setting. We selected appropriate evaluation parameters to verify the imaging results. Finally, we concluded that the micro non-uniform linear array eliminated the artifacts better than the micro uniform linear array without the additional use of signal processing methods, especially for target points in the near-field. We believe this study provides a possible solution for plane wave imaging in cramped environments like endoscopy.

Near Field Characterization of an Imaging System Based on a Frequency Scanning Antenna Array

2013 ◽  
Vol 61 (5) ◽  
pp. 2874-2879 ◽  
Author(s):  
Carlos Vazquez ◽  
Cebrian Garcia ◽  
Yuri Alvarez ◽  
Samuel Ver-Hoeye ◽  
Fernando Las-Heras
Keyword(s):  
Antenna Array ◽  
Imaging System ◽  
Near Field ◽  
Frequency Scanning ◽  
Scanning Antenna

Substrate-Integrated E-Plane Waveguide Horn Antenna and Antenna Array

2018 ◽  
Vol 66 (5) ◽  
pp. 2382-2391 ◽  
Author(s):  
Zhewei Gu ◽  
Xuan Hui Wu ◽  
Qun Zhang
Keyword(s):  
Antenna Array ◽  
Horn Antenna ◽  
Plane Waveguide
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