发怨言
发表于 2025-3-23 13:46:26
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热烈的欢迎
发表于 2025-3-23 14:12:39
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carbohydrate
发表于 2025-3-23 20:51:34
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ligature
发表于 2025-3-23 23:16:42
Time-Varying Boundary-Value Problems,nsmission lines are discussed, where the three-dimensional vector Helmholtz equations are reduced directly to one-dimensional scalar Hlmholtz equations or telegraph equations. Their solutions are one-dimensional traveling-waves.
antedate
发表于 2025-3-24 05:43:31
Metallic Waveguides and Resonant Cavities,. 2, the uniform plane wave in unbounded simple medium and the TEM wave in a transmission line were given as the simplest examples of the two sorts of electromagnetic waves. In this and the next two chapters, guided waves confined in metallic boundaries, dielectric boundaries, and periodic boundarie
磨坊
发表于 2025-3-24 09:52:31
Dielectric Waveguides and Resonators, wavelength. The reasonable dimensions for metal work are in centimeter and millimeter range. For this reason, metallic waveguides and cavity resonators including coaxial lines and coaxial cavities are extensively used in microwaves, i.e., centimeter and millimeter wave bands.
忍耐
发表于 2025-3-24 11:49:48
Periodic Structures and the Coupling of Modes,e effectively, for this purpose, the charged particles (electrons or ions) need to be kept in phase with a retarding field in the amplifiers’ case or an accelerating field in the accelerators’ case over a long distance, e.g., over a distance of the order of several wavelengths. This means that the v
Commodious
发表于 2025-3-24 17:02:43
Chapter 7 Electromagnetic Waves in Dispersive Media,titutional parameters are assumed to be constant scalars and frequency independent. In fact, no medium can always be a simple medium except vacuum. Most media can only be approximated as simple media under certain conditions.
最低点
发表于 2025-3-24 22:28:10
Chapter 9 Gaussian Beams, The optical distributions of some laser beams and the modal field distributions of optical waveguides with special index profiles may be Gaussian. Gaussian beams have been found to have attentions with the appearance of lasers, and the development of lasers and optoelectronics make them more and mo
Oafishness
发表于 2025-3-25 00:01:20
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