Patent
An apparatus for generating a millimeter wave Bessel beam using a double feed
Liu Zhe,Zhang Dehai +1 more
TLDR
In this paper, an apparatus for generating a Bessel beam using a double feed source consisting of two identical feeds and a lens located on a plane is presented. But the beam splitting problem is solved in the traditional method, directly utilizing two beams for coherent modulation to obtain a bessel beam, the whole device is simple and practical, and the length thereof is shortened by 20% compared with the existing device.Abstract:
The invention discloses an apparatus for generating a Bessel beam using a double feed source. The apparatus comprises two identical feeds and a lens located on a plane. The geometrical centers of theexit surfaces of the two feeds are equal to the distance from the focal point of the lens, and the two feeds are dielectric rod antennas for incident the generated two Gaussian beams onto the lens foroutputting the Bessel beams. The device of the invention utilizes two identical feed sources, solves the problem of beam splitting in the traditional method, directly utilizes two beams for coherentmodulation to obtain a Bessel beam, the whole device is simple and practical, and the length thereof is shortened by 20% compared with the existing device.read more
References
More filters
Patent
Dual mode antenna for millimeter wave and infrared radiation
TL;DR: In this paper, a dual mode antenna that allows both millimeter wave and infrared radiation to enter a single aperture and propagate through a common transmission device to a point where the respective energies are divided to follow separate paths for subsequent processing is described.
Patent
Method for efficiently making large-depth-diameter-ratio micropore arrays
Jiang Lan,Qian Xie,Li Xiaowei +2 more
TL;DR: In this article, a femtosecond laser space light shaping method and a flight time punching method are integrated, and a large area of large-depth-diameter-ratio micropore arrays can be efficiently machined within a short time.
Patent
Curved-surface feed source transmitting and receiving integrated double ellipsoid lens antenna
Wu Xidong,Yang Fan,Yan Hailong +2 more
TL;DR: In this article, a curved-surface feed source transmitting and receiving integrated double ellipsoid lens antenna is presented, which includes a double ellipsis lens antenna, a lens extension layer, lens support, a pedestal, receiving feed source antenna arrays and transmitting feed source antennas arrays.
Patent
A method and system generating a high-quality quasi Bessel array light beam
TL;DR: In this article, a method and system for generating a high quality quasi Bessel array light beam includes the steps of: generating a Gaussian beam, expanding the Gaussian beam, modulating the expanded Gaussians to generate an array spot beam, dispersing the array point beam to generate a completely incoherent beam, collimating the completely coherent beam, and generating a partially coherent beam to produce a circular vortex beam at the focal point.
Patent
Transforming lens generating Bessel wave beams
Hongfu Meng,Teng Li,Wenbin Dou +2 more
TL;DR: In this paper, a transforming lens generating Bessel wave beams comprises two outer layer dielectric lenses and a core layer core layer transformable lens, which can transform incident Gaussian wave beams into the Bessel beam.
Related Papers (5)
Light-field image-capturing device by generating Bessel-beams to enhance directional electric field distribution and regulating a proper focal length of microlens to increase the precision
Zhan Jia-Ming,Lin Ying-Jie +1 more