Due to its advantages of high power capacity , weak dispersion , easier fabrication and low ohmic losses , the folded rectangular groove guide would be an excellent slow - wave structure in millimeter and submillimeter wave twts 曲折矩形槽波导结合了曲折波导散热能力强、色散特性好、容易加工和矩形槽波导单模工作、低损耗、大尺寸等优点,因此这种新型的慢波系统有可能在毫米波及亚毫米波段的行波管中具有较好的发展前景。
Since 1994 , professor kwok has been serving as the principal investigator for canada s submillimeter - wave satellite odin which was successfully launched in 2001 on a russian start - 1 rocket and was the first satellite in the world to have carried out a spectra scan in the submillimeter - wave region 自一九九四年起,郭教授担任加拿大次毫米波人造卫星odin的主持人。这枚由俄国start - 1火箭运载的人造卫星,在二一年成功发射,并且是首枚进行次毫米波段光谱扫瞄的卫星。
Gyroklystron amplifier is a novel high - power millimeter - wave coherent radiation source . as a result of high - power capability and high - efficiency and moderate bandwidth advantages , gyroklystron amplifiers have received a great deal of attention in recent years for a variety of applications including high - power radars , electronic counter systems and the next linear collider etc . specifically in twenty years later , there was much developments on gyrotron 回旋速调管放大器是一种能够在毫米波段获得高功率、高效率及一定带宽的新型毫米波相干辐射源,因其在高功率毫米波雷达、电子对抗、定向能武器、材料处理和加速器等领域的重要应用前景,在国际上受到了广泛的重视。
So its naissance brings a lot of hope and promotion to application and deploitation of milimeter and submilimeter - wave . because of gyrotron , s superiority of high peak power and average power among many known milimeter and submilimeter - wave gyrodevices , it has been paid much respect in the world for application in many areas such as plasma heating , rf accelerator , millimeter radar , dew and so on 由于回旋管具有在毫米、亚毫米波段其它器件无可比拟的高峰值功率、高平均功率的优越性,因此在受控热核聚变等离子体的回旋管加热( ecrh ) 、电子高能rf加速、雷达系统、通信系统以及定向武器( dew )等方面都有着广阔的应用前景。
Relatively close , dusty galaxies are expected to be much brighter at millimetre wavelengths than extremely remote , highly redshifted galaxies . when all four heros turned up as expected in the scuba observations , they concluded that they are dusty star - forming galaxies at a mere 10 , 000 million or 10 billion light - years 由于充满尘埃的星系在亚毫米波段应较极遥远的星系光亮得多,因此他们推论这四个hero可能是充满尘埃和有大量恒星正在形成的星系,而距离只有100亿光年而已。
In order to provide theory and experimental basis for native defense project , the paper measure 8mm band scattering characteristic of one module plane and analyze accuracy in addition , the paper measures the 3mm band radiation characteristic of different non - metal and metal targets , contrasts to the theory module and extracts the correspondence feature vector to provide the base for millimeter wave active / passive detecting technology 通过对某一模型飞机进行8毫米波段的散射特性测试,并进行误差分析,为项目的研究提供了理论和实验的依据。同时本文也对不同的非金属目标和金属目标进行3毫米波段辐射特性测试并和建立的理论模型进行对比分析,根据分析结果提取相应的特征量,为毫米波主被动探测技术的研究提供依据。
Along with millimeter wave technology development , the high speed modulate 155mb / s millimeter wave receiver requires that the local oscilloscope performance should be excellent to satisfy its communication requirement . this article aimed at the requirement of 8mm millimeter wave receiver and developed a high performance millimeter yto frequency synthesizer . the article introduces several millimeter wave frequency synthesizers and analyzes their characteristic 随着毫米波技术的发展,在毫米波段高调制速率的毫米波通信机对毫米波本振源提出了更高的性能要求,本文针对8mm高速宽带155mb / s无线接入通信系统对毫米波本振源的要求,介绍了几种毫米波频综的设计方案,并进行了分析,最后决定采用锁相倍频的方案。