International Journal of Infrared and Millimeter Waves

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Các thuộc tính thống kê của các mẫu điểm hiện được tạo ra từ các bề mặt thô xa Dịch bởi AI
International Journal of Infrared and Millimeter Waves - Tập 22 - Trang 1177-1191 - 2001
Guanjun Guo, Shukai Li, Qulin Tan
Các thuộc tính thống kê của các mẫu điểm hiện được tạo ra từ các bề mặt thô xa, dưới sự chiếu sáng của một chùm laser Gaussian, đã được nghiên cứu. Mối phụ thuộc của độ nhám bề mặt đối với các khoảng thời gian bậc nhất và bậc hai của cường độ đã được nghiên cứu lý thuyết, và các biểu thức phân tích của chúng đã được rút ra và trình bày. Phân tích chỉ ra rằng phân bố cường độ trung bình trên mặt ph...... hiện toàn bộ
#điểm hiện #bề mặt thô xa #chùm laser Gaussian #độ nhám bề mặt #phân bố cường độ
Investigation of the Dielectric-Loaded Folded Waveguide Traveling-Wave Tube Amplifier
International Journal of Infrared and Millimeter Waves - Tập 30 Số 10 - Trang 1027-1037 - 2009
Zhang, Changqing, Gong, Yubin, Gong, Huarong, Wei, Yanyu, Wang, Wenxiang
The cold-test characteristics of the dielectric-loaded folded waveguide traveling-wave tube (FWTWT) amplifier are investigated theoretically and the Pierce small-signal theory is employed to confirm the results. For the purpose of analysis, the discussions are separated into symmetric case and unsymmetrical case according to the loading form of the dielectrics. The calculation results indicate tha...... hiện toàn bộ
Optimization and Maximum Output Power of CW DCN Laser
International Journal of Infrared and Millimeter Waves - - 2004
H. Q. Liu, Xu Gao, Yinxian Jie, K. Tanaka, T. Tokuzawa, Li Gao, M. Asif, X. D. Tong, Yong Cheng
Study on the Vertical Profile of Refractive Index in the Troposphere
International Journal of Infrared and Millimeter Waves - Tập 21 - Trang 1103-1111 - 2000
Guanjun Guo, Shukai Li
The vertical profiles of atmospheric pressure and optical refractive index have been theoretically analyzed. The refractive index can be determined at any altitude above the sea level in the troposphere. The ranging error has been analyzed and ranging accuracy could be improved when the average refractive index along the ray path is used.
Study of coupling between circular groove guide and rectangular groove guide
International Journal of Infrared and Millimeter Waves - Tập 13 - Trang 933-938 - 1992
Ma Jianglei, Yang Hong-sheng, Lu Zhong-zou
On the basis of the studies of single circular groove guide and single rectangular groove guide, the coupling of the two waveguides has been researched and the characteristic equation of circular—rectangular groove guide has been given in this paper.
Perturbation Analysis of Dielectric Grating Antenna with LHM Substrate
International Journal of Infrared and Millimeter Waves - Tập 28 - Trang 33-42 - 2007
Yongmei Pan, Shanjia Xu
A dielectric grating leaky wave antenna with a substrate consisted of left handed material (LHM) is presented in this paper, the case where the n = −1 space harmonic of TM mode radiating into the space is carefully investigated through the improved perturbation analysis, which tremendously simplifies the analysis procedure with good calculation accuracy and brings considerable physical insight int...... hiện toàn bộ
Millimeter-Wave over Fiber Systems Using Hybrid OCDM/WDM Transmission
International Journal of Infrared and Millimeter Waves - Tập 24 - Trang 1113-1126 - 2003
Edward Mutafungwa, Seppo J. Halme, Kamugisha Kazaura, Mitsuji Matsumoto, Toshihiko Wakahara
In this paper, we propose and simulate 2 OCDM × 4 WDM transmission system for a millimeter-wave (60 GHz) over fiber system to be used in broadband wireless access networks (BWANs). The general system setup is devised and the necessary building blocks identified. Results gathered (for a 155 Mbit/s per user system) under worst case parameter specifications and settings suggest indicate that system p...... hiện toàn bộ
A New Piecewise Approach for Nonuniformity Correction in IRFPA
International Journal of Infrared and Millimeter Waves - Tập 25 - Trang 959-972 - 2004
Yan Shi, Tianxu Zhang, Zhiguo Cao
Considering different detector in IRFPA has different nonlinear response characteristic, a novel piecewise linear connection scheme for nonuniformity correction in IRFPA is proposed in this paper. Comparing to the widely used piecewise linear correction, the proposed scheme tries to find the n-segment piecewise straight-line which strives for going near (not always through) all available calibrati...... hiện toàn bộ
Multilayered open dielectric waveguide with a gyrotropic layer
International Journal of Infrared and Millimeter Waves - Tập 2 - Trang 1-14 - 1981
Ikuo Awai, Tatsuo Itoh
Open dielectric waveguides with a gyrotropic layer have been studied with a view to find structures in which the nonreciprocity in the propagation constant is maximized. A prediction based on a qualitative analysis and numerical studies for confirming the theory are included.
Quasi-optical grids with thin rectangular patch/aperture elements
International Journal of Infrared and Millimeter Waves - Tập 14 - Trang 1017-1033 - 1993
Te -Kao Wu
Theoretical analysis is presented for an efficient and accurate performance evaluation of quasi-optical grids comprised of thin rectangular patch/aperture elements with/without a dielectric substrate/superstrate. The convergence rate of this efficient technique is improved by an order of magnitude with the approximate edge conditions incorporated in the basis functions of the integral equation sol...... hiện toàn bộ
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