yagi造句
- This switched parasitic yagi - uda antenna uses a yagi - uda antenna as its prototype , and can change radiation pattern by the control of rf switch which is placed at the center of its reflector
該開關(guān)八木天線以八木天線為原型,通過八木天線反射器中部的微波開關(guān)控制反射器的通斷來改變開關(guān)八木天線的方向圖。 - In this dissertation , switched parasitic pattern diversity yagi - uda antenna array used for the base station has been illustrated after the introduction of mimo technologies and the analysis of the base station antenna design for next generation of wireless communication
本文在介紹mimo技術(shù)和分析新一代移動(dòng)通信中基站天線的設(shè)計(jì)思路的基礎(chǔ)上,給出了一種適用于mimo系統(tǒng)基站、具有角度分集功能的開關(guān)八木天線陣列。 - The characters of this antenna lie in three points : using yagi - uda antenna to obtain antenna gain through the radial direction ; making full use of the space of the base station along the z - axis direction to get array gain ; arranging the antenna array properly to achieve pattern diversity in azimuth plane
其特點(diǎn)集中體現(xiàn)在三個(gè)方面:在天線徑向通過八木天線的形式獲得增益;充分利用基站空間在z向組成陣列獲取陣列增益;利用開關(guān)八木天線方向圖可重構(gòu)的特性,通過合理的布局,在方位面內(nèi)實(shí)現(xiàn)角度分集。 - The simulation results are compared to the normal dipole antenna in order to observe the influence of fractal and investigate the effect of antenna miniaturization . the relationship between miniaturization and fractal dimension is researched . the koch and 3 / 2curve fractal unit are applied to yagi - uda antenna , the performance like impedance characteristic and radiation pattern is simulated by cst microwave studio ?
對(duì)其阻抗特性及輻射方向圖進(jìn)行了仿真計(jì)算,并分別與未應(yīng)用分形的普通半波振子天線相比較,觀察分形對(duì)天線性能的影響,以檢驗(yàn)分形天線小型化的效果,研究了尺寸縮減性與其分形結(jié)構(gòu)的分形維數(shù)之間的關(guān)系。 - It's difficult to see yagi in a sentence. 用yagi造句挺難的
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