ultra wideband 中文意思是什麼

ultra wideband 解釋
超寬帶
  • ultra : adj 過度的，過激的，極端的。n 1 過激論者，極端分子，急進分子，激烈分子。2 〈美口〉高消費顧客，專...
  • wideband : 多種頻率的
  1. An omnidirectional ultra - wideband monopole antenna, with the characteristics of simple structure, easy fabrication and low cost, mainly comprises a ground plane, a u - shaped radiating member above the ground plane and a feeding member

    一種可提供超寬頻操作頻帶之全向性超寬頻單極天線，其具有結構簡單、製作簡單以及成本低廉的特性。
  2. The circular monopole antenna is a kind of miniaturized and easy - feed ultra - wideband antenna

    本課題所研究的圓盤單極天線是一種小型化、饋電簡單的超寬帶天線。
  3. An ultra - wideband, monocycle ultra - short - pulse transmitter technique

    單周期窄脈沖產生技術
  4. Ultra - wideband electromagnetic radiation from gaas photoconductive switches

    光電導開關的超寬帶微波源
  5. Applications of photoconductive semiconductor switches in ultra - wideband radars

    光導開關在超寬帶雷達中的應用
  6. Wavelet - based pulse design for ultra - wideband system

    基於小波的超寬帶脈沖波形設計
  7. Lfm signal is a classic pulse compression signal and it is one of the ultra - wideband radar waveforms, there is sophisticated theoretical basis of its generating, receiving and processing

    線性調頻信號作為一種典型的脈壓信號，同時也是超寬帶雷達調制波形中的一種，其產生和接收處理已具備了較為成熟的理論研究。
  8. The circular monopole ultra - wideband antenna has not only the extremely wide band in frequency domain, but also stable phase center, which makes the antenna radiate and receive the short pulse signals without any distortion, and suitable for various ultra - wideband communication systems or the single antenna of other multi - frequency operating communication systems

    這種天線不僅具有極寬的阻抗帶寬，還擁有穩定的相位中心。這使得圓盤單極超寬帶天線可以不失真地收發時域短脈沖信號。所以該天線不僅適用於超寬帶通信中，還能夠作為復雜多頻工作系統的單一收發天線。
  9. Time - domain measurements and processing of ultra - wideband scattering signal

    超寬帶散射信號的時域測量及處理
  10. In the short distance communication, with the advantageous qualities of low power consumption, high speed rate, high - capacity and multi - address access etc., the ultra - wideband communication arouses the people ' s widespread interest

    在短距離通信中，超寬帶通信以低功耗、高速率、高容量、多址接入等優點引起人們廣泛的關注。
  11. Firstly, the differences between the ultra - wideband antenna and conventional wideband antenna are introduced in this thesis, and the definitions of several performance parameters of the ultra - wideband antenna are presented, among which the phase center and the group delay time are primarily discussed in that they describe the time domain properties of the antenna

    首先，簡要介紹了超寬帶天線與傳統超寬帶天線的區別，給出了超寬帶天線的性能參數在時域的描述方法。著重介紹了描述超寬帶天線時域特性的兩個參數，即相位中心和群延時。
  12. Trajectory deviation of the aircraft is the main cause of phase errors in airborne ultra - wideband synthetic aperture radar ( uwb sar )

    機載超寬帶合成孔徑雷達（ uwbsar ）中，載機的非理想運動是引起信號相位誤差的主要原因。
  13. Ideally, the voltage ’ s transmission efficiency of blumlein can reach to 100 percent, which is two times of the single pulse - forming line ’ s, so it will be applied widely in ultra - wideband source circuit

    而且理想情況下雙脈沖形成網路的電壓傳輸效率可達到百分之百，是單形成線的2倍，使其將會在超短脈沖源產生電路中得到廣泛應用。
  14. In this topic, an adc circuit and data - storage system for all digital ultra - wideband receiver was designed, and the ultra - wideband narrow pulse signal that is received is digitalized, using an ultra - high - speed a / d convertor

    本課題設計了一個全數字化超寬帶接收器的adc電路及數據存儲系統。利用一個超高速的ad轉換器，對超寬帶窄脈沖信號進行數字化。
  15. This paper introduces the realization scheme and key technology of 2 ~ 12ghz ultra - wideband microwave frequency synthesizer. it adopts dds + pll frequency synthesizer scheme to realize low end frequency 2 ~ 4ghz output, then through segment amplifying multiplying chain realize from 2 ~ 4ghz expand to 2 ~ 12ghz, and the output frequency is selected by microwave switch

    採用dds + pll的混合頻率合成方案實現低端頻率2 ~ 4ghz的輸出，再通過分段放大倍頻鏈路實現從2 ~ 4ghz到2 ~ 12ghz的擴頻，並由微波開關控制選頻輸出。
  16. The whole system adopts one pll only to control vco to output the ultra wideband frequency of 2 ~ 12ghz, and realizes small volume, low cost microwave frequency source

    整個系統採用單環鎖相控制vco ，輸出2 ~ 12ghz的超寬帶頻率，實現了小體積、低成本的微波頻率源。
  17. Abstract : a noise model for the analog correlator used in the ultra wideband receivers is proposed due to lack of simulation capability on noise performance of the correlator in current eda tools. the analog correlator circuit is divided into several parts to calculate the equivalent noise sources respectively. the ideal impulse generators, instead of the noise sources, are then applied to obtain the time varying transfer functions. fourier transforms are carried out to explore the relationship between the noise input and output in frequency domain for each part. then the symmetrical noise sources are grouped together and the periodicity of the circuit is utilized to further simplify the model. this model can be used to evaluate noise performance of the correlator

    文摘:給出了分析模擬相關器的噪聲模型.將相關器分成不同的幾個子模塊后，對各模塊分別計算等效噪聲源.然後用理想脈沖源代替噪聲源計算電路的時變傳輸函數，接著用傅里葉變換計算輸入輸出的頻域關系.利用電路的對稱結構合併對稱的子模塊可以進一步簡化模型.該模型可以用來估計相關器的噪聲性能
  18. A novel based on eigenvector combine transmission diversity scheme for ultra - wideband communication system

    一種新的基於特徵向量合併的超寬帶系統分集方案
  19. Uwb new wireless communication technology - ultra wideband

    智能交通中的無線通信技術
  20. A method of super - resolution imaging on ultra wideband isar

    復圖像配準及利用殘差點進行質量評估
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