Zobrazeno 1 - 10
of 848
pro vyhledávání: '"beam: width"'
Publikováno v:
Journal of Electromagnetic Engineering and Science, Vol 24, Iss 5, Pp 477-484 (2024)
In this study, we propose the wide field of view (FoV) radar module for autonomous vehicles. The proposed wide FoV radar (WFR) module was constructed using of an RF module comprising wide beamwidth microstrip patch antennas, an AWR1642 radar sensor c
Externí odkaz:
https://doaj.org/article/19a15cba40004776903693c3a323c012
Research Paper: Investigation of Laser Self-Focusing in Quantum Plasma by the Moment Theory Approach
Autor:
Somaye Zare
Publikováno v:
فیزیک کاربردی ایران, Vol 14, Iss 1, Pp 77-87 (2024)
In this work, considering the moment theory propagation of the laser beam with relativistic intensity in thermal quantum plasma is studied. Using the Maxwell equation and dielectric function obtained by the quantum hydrodynamic model, the mathematica
Externí odkaz:
https://doaj.org/article/49fc240d84d4437cb8ac0477aaabb578
Autor:
A. V. Zakharov
Publikováno v:
Vestnik MGSU, Vol 19, Iss 3, Pp 358-366 (2024)
Introduction. Modern physical models for calculating the propagation of plane longitudinal waves through media boundaries, based on the conditions of continuity of sound pressure and vibrational velocity, are implemented only with normal wave inciden
Externí odkaz:
https://doaj.org/article/16b95931b31a4470a26ce4703f3930f1
Publikováno v:
Zhongguo Jianchuan Yanjiu, Vol 19, Iss 2, Pp 245-251 (2024)
ObjectivesIn order to effectively broaden the beam width of the 3 dB axis ratio of a Beidou antenna, this paper proposes a slotted laminated microstrip patch antenna loaded with parasitic elements. MethodsThe Beidou dual frequency band feature is rea
Externí odkaz:
https://doaj.org/article/1bf1010eddbb4dce94b4e7d0d364a604
Publikováno v:
Applied Sciences, Vol 14, Iss 23, p 11429 (2024)
Millimeter-wave (mm-Wave) phased array systems need to meet the transmitter (Tx) equivalent isotropic radiated power (EIRP) requirement, and that depends mainly on the design of two key sub-components: (1) the antenna array and (2) the Tx power ampli
Externí odkaz:
https://doaj.org/article/2a2efce5012a414495ad1195bcd99196
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 5, Iss 5, Pp 1320-1327 (2024)
This paper introduces a novel technique for inducing circular polarization in a single radiator through the implementation of a sequentially rotated feeding network. Analogous to the operational principles of sequentially rotated antennas employing m
Externí odkaz:
https://doaj.org/article/85b376db960d4fb2a53906bd26a79efc
Autor:
G. M. Bazhin
Publikováno v:
Vestnik MGSU, Vol 18, Iss 11, Pp 1731-1744 (2023)
Introduction. At the present time, the requirements to reliability and durability of steel structures, as well as their economic feasibility, are increasing. Considering the complexity of analyzing multiple factors influencing the strength, stability
Externí odkaz:
https://doaj.org/article/8100acd8207e448b9e15151b909ddf2d
Publikováno v:
Drones, Vol 8, Iss 9, p 437 (2024)
As IoT technology advances, the smart grid (SG) has become crucial to industrial infrastructure. However, SG faces security challenges, particularly from distributed denial of service (DDoS) attacks, due to inadequate security mechanisms for IoT devi
Externí odkaz:
https://doaj.org/article/0eb51868bdcb4026ae0c2c264c46a1c0
Publikováno v:
Results in Physics, Vol 58, Iss , Pp 107521- (2024)
As the superposition of an even and odd modes constitutes an elegant Laguerre-Gaussian beam (ELGB), Airy transformation of the even mode, the odd mode, and the ELGB is studied. Analytical expressions of the even mode, the odd mode, and the ELGB in th
Externí odkaz:
https://doaj.org/article/7abe2df9d024455a81fa478f7cd81828
Publikováno v:
Ain Shams Engineering Journal, Vol 15, Iss 3, Pp 102582- (2024)
A non-uniform aperture distribution slotted waveguide antenna is presented. The slotted waveguide antenna array is chosen for its ease for aperture distribution control and the flexibility of gain adjustment. Multiple aperture distribution functions,
Externí odkaz:
https://doaj.org/article/ffc7de5bf3fb440a833aa84d96ede919