混頻器濾波器 的英文怎麼說

中文拼音 [húnbīnqìlǜbōqì]
混頻器濾波器 英文
mixer filter
  • 混 : 混形容詞1. （渾濁） muddy; turbid2. （糊塗; 不明事理） foolish; stupid
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  • 器 : 名詞1. （器具） implement; utensil; ware 2. （器官） organ 3. （度量; 才能） capacity; talent 4. （姓氏） a surname
  • 濾 : 動詞（除去液體雜質） filter; strain
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 濾波器 : [電子學] electric filter; （electric） wave filter; filter
  1. Delay line oscillator is composed of broadband amprifer adjustable attenuator and saw sensor device. after output signal of delay line oscillator is smoothed, it mixes with 109mhz local oscillation signal. its differential frequency signal is smoothed by low - pass filter trimmed by shaping circuit and processed by digital processing circuit

    延遲線振蕩器由寬帶放大器、可調衰減器和聲表面波質量傳感器件構成。延遲線振蕩器輸出信號經濾波后與109mhz的本機晶體振蕩器輸出信號相混頻，通過低通濾波取其差頻，並經整形後由數字信號處理電路處理。
  2. Secondly, according to the character of this kind of harmonic, the solutions of power filter are deeply analyzed and an optimized topology for series connected hybrid power filter is obtained. by pwm technique, midfrequency transformer and the principle of the magnetomotive force ( mmf ) compensation, the problem to the transfer of the low - frequency harmonic power compensatory signal in the series apf is solved, in technique

    其次，針對acem系統特有的「電源諧波」特性，深入分析了濾波器方案，得到了一種適用於acem系統諧波抑制的串聯混合型有源電力濾波器優化拓撲結構，並採用了pwm調制技術、中頻注入變壓器和磁勢補償原理有效地解決了串聯apf中低頻諧波功率補償信號傳輸的難題。
  3. The paper is to design analogue lowpass filtering circuits with high performances. the circuits are used directly as anti - alias filters in an analogue front - end of video decoder ic ( integrated circuit )

    =本文旨在設計高性能的模擬低通濾波電路，用作視頻解碼晶元模擬前端中的抗混疊濾波器。
  4. The field of video signal processing is now undergoing a digital reform. the digital processing technique is clearly expatiated in this paper, such as a / d convert, anti - alias filter, clamp control, gain control, pll, synchronization circuit, color decoder, comb filters

    本文詳細敘述了視頻圖像的數字處理方法，重點介紹了視頻信號數字化技術、抗混疊濾波器、箝位、增益控制、鎖相技術、同步時鐘產生、電視信號亮色分離、彩色解碼等技術，這些關鍵技術為視頻信號的數字化處理提供了重要的基礎。
  5. In active section, in order to meet performance of out put power above 10dbm, the power amplifier module of ka - band is fabricated by using hmc283 to achieve the 14db conversion gain. there are five parts that include of waveguide - to - microstrip ? mixer ? filter ? power amplifier and waveguide - to - microstrip. input signal ' s power is 10dbm, after it pass waveguide - to - microstrip, it ' s frequency is escalate from 30ghz to 35ghz

    該組件由五個部分組成：功率為10dbm信號經過波導? ?微帶過渡，然後混頻，濾波將30ghz提高到35ghz濾除不需要的諧波鏡頻以及三階交調信號，為了彌補混頻濾波的變頻損耗，加一級功率放大器，此放大器採用hittle公司hmc283晶元，此上變頻放大組件完成了上變頻?濾波?放大功能。
  6. Lastly, the paper designs an example and tests its amplitude frequency response. at last, this paper points out that this method can efficiently control the performance of narrow band fir digital filters. both test and application indicate that practical performance and ideal performance are almost identical

    在此基礎上給出窄帶fir濾波器的詳細結構，分析了窄帶fir濾波器的多級實現原理，並且對窄帶fir濾波器的的基本特性進行了分析，這些特性包括：頻率特性、抗混疊特性、去鏡象特性。
  7. In this thesis, first, we present the theory of sess system, the generation of the sess spreading code and its characteristics and the acquisition theory of conventional spread spectrum communication system. an efficient acquisition scheme based on periodically transmitting the synchronization head, which is composed of binary chaotic codes, using the matched filter and automatic decision threshold - level control based on a so - called constant false alarm criterion for sess system is present. the acquisition model of sess system is built and simulated in the awgn channel, the raleigh fading channel and imulti - address interfere condition

    本文首先概述了自編碼擴頻通信的原理、自編碼擴頻序列的產生方法及其特性和擴頻通信系統編碼同步的理論，然後針對自編碼擴頻通信系統提出了擴頻序列捕獲方案:周期性地加入混沌序列同步碼，並採用恆虛警率匹配濾波器捕獲法;在加性白高斯噪聲通道、瑞利衰落通道和多址干擾情況下進行了模擬，分析了各種捕獲性能:在選擇性能最優的混沌序列、適當的序列長度、虛警概率及門限值的情況下，可以獲得較短的捕獲時間和較大的捕獲概率。
  8. Compared with the traditional methods of artifacts elimination, ica, a kind of spatial filter, does not be restricted by the case of spectrum overlapping, and have a good reservation of useful detail signals

    此外， ica這種空間濾波器不受信號頻譜混迭的限制，消噪的同時能對有用信號的細節成分做到很好的保留，很大程度上彌補了時頻域方法的不足。
  9. On the basis of high speed hybrid filter banks adc system, a kind of downsampler model based on bandpass sampling theorem is presented, and analyzed, proved in time and frequency domain, in addition a downsampler is designed according to the model. a class of high effective hybrid filter banks adc system which bases on the downsampler and radio frequency spectrum is proposed, of which digital signal rate falls m times as fast as the former

    作者提出了一種基於帶通采樣定理的抽取器數學模型，對該數學模型進行了時域、頻域的分析證明后，設計了一種基於該數學模型的抽取器，進而根據無線電射頻信號頻譜的特點，提出了高效混合濾波器組adc系統，其數字信號輸出速率比高速混合濾波器組adc系統降低m - 1倍。
  10. Frequency response, quantization noise, reconstruction error and its sensitivity to mismatch among adcs are studied at length in prqmf banks adc system, and the theoretic results include : ( 1 ) the distortion / aliasing functions of hybrid filter banks adc system is similar with that of switch capacitor filter banks adc system ; ( 2 ) for wide or narrow band input signal, the effective resolution of the two adc systems is 0. 51og2m bits higher than their adc ; ( 3 ) reconstruction error ' s sensitivity to mismatch among adcs of the two adc systems is reduced effectively than time interleaved adc system

    2對prqmf濾波器組adc系統的頻響、量化噪聲特性、重建誤差特性以及重建誤差對adc間的失配敏感性進行了理論分析研究，所得到的理論結果為： （ 1 ）混合濾波器組adc系統與開關電容濾波器組adc系統的失真/混迭函數一致； （ 2 ）無論輸入寬帶還是窄帶信號，這兩種adc系統的有效解析度均比其adc提高了0 . 5log _ 2m比特； （ 3 ）這兩種adc系統的重建誤差對其adc間的失配敏感性均明顯低於時間交織adc系統。
  11. The bottleneck of hybrid filter banks adc system is that it cannot sample directly higher radio frequency signal because of lower analog input bandwidth of its adc. in order to remove it, a kind of downsampler model based on nyquist and bandpass sampling theorem is presented, analyzed and proved in time and frequency domain, in addition a downsampler is designed according to the model. on the basis of hybrid filter banks adc system, a class of high speed hybrid filter banks adc system is proposed

    針對混合濾波器組adc系統因其adc模擬輸入帶寬低而不能對頻率較高的射頻模擬信號進行模/數轉換的瓶頸，作者提出了一種基於nyquist采樣定理和帶通采樣定理的抽取器數學模型，對該數學模型進行了時域、頻域的分析證明后，設計了一種基於該數學模型的sha抽取器，進而在混合濾波器組adc系統的基礎上，提出了高速混合濾波器組adc系統。
  12. Filter poly - phase decomposition method is adopted in this dissertation. the partition of the tuning channel according to the digital mixing sequence, and the digital down - conversion by means of decimating first, the low - pass filtering and mixing realize efficiently the down - conversion of the variable carrier frequency band - pass signal

    本文採用濾波器多相分解方法，按數字混頻序列劃分調諧通道，使用先抽取，后低通濾波，再混頻的數字下變頻結構，高效實現了變載頻帶通信號數字下變頻。
  13. Dsp digital shift frequency sires is new generation conference system and teaching equipment, which adopts dsp technology. it can lock the point of howl a automatically, dsp digital shift frequency and aptitude mix sound of transmitter

    數字自動濾波器，數字話筒智能混音器，數字高低音調節器等多項數字化音頻處理模塊的技術優勢，解決了會議教學擴聲中的聲反饋問題，可提升話筒靈敏度
  14. The paper designs a more lpf and a numberical filter to eliminate the error, and a frequency tracing tache because system frequency fluctuates ceaselessly. this guarantes synchronization sampling

    為了消除頻率混疊帶來的誤差，專門設計具有較好性能的低通濾波器和數字濾波器；由於系統頻率波動性，設計有硬體電路組成的頻率跟蹤環節，最終實現采樣周期和信號周期同步。
  15. 4. the double dsp technique is introduced, and the furthermore the traditional fft analysis and nowaday theory of instantaneous reactive power is combined, thus the combined system of shunt passive filters and active power filters is designed

    4 、採用雙dsp晶元技術，將傳統的頻域分析fft計算與現代的瞬時無功功率理論相揉和，進行lc無源濾波器和並聯型有源電力濾波器混合系統的設計。
  16. In the design of w band balanced mixer, if signal is extracted via the fifth port made on the conventional ratrace, and it is sent out through a novel lowpass filter using microstrip stepped - impedance hairpin resonators

    在w頻段單平衡混頻器的研究中，本文在傳統混合環的基礎上引出第五個埠，它連接低通濾波器將中頻輸出。
  17. In the first place, start with theoretic model of distributed fbg strain - sensing network, sensing principle of fiber bragg grating is analyzed and sensing model created. on the basis of analyzing advantages and disadvantages of several familiar multiplexing and demodulation techniques, a mixture multiplexing method that combines optical frequency domain reflectometry ( ofdr ) and wavelength division multiplexing ( wdm ) is proposed to address fbg sensing array. at the same time, tunable narrow - band light source, which is composed of wide - band light source and tunable optical filter, is adopted to demodulate multiplex signals

    首先，論文從分散式光纖光柵應變傳感網路的理論模型入手，分析了光纖布拉格光柵的傳感機理，建立光纖光柵應變傳感模型；在分析比較了常見幾種復用技術和信號解調技術的優缺點基礎上，提出應用光頻域反射復用技術和波分復用技術相結合的混合復用方法來解決光纖光柵應變傳感網路的尋址問題，採用由寬帶光源和可調諧光濾波器組成的可調諧窄帶光源來解調復用信號，通過理論分析和實驗研究證實了系統方案的可行性。
  18. In view of the importance of rf front - end circuits in the receiver system, the paper finally is focused on the analysis and design of the rf front - end circuits, including the design of low noise amplifier ( lna ), microstrip filter and balanced mixer. all the circuits above are simulated individually using ansoft serenade, and the results are satisfying with the desired performance

    考慮到射頻前端電路性能的好壞會直接影響到整機的性能，文中還重點論述了該接收機射頻前端電路的分析和設計，主要包括低噪聲放大器、微帶濾波器和單平衡混頻器的理論分析和實際設計，並在ansoftserenade環境下進行了模擬模擬，模擬結果符合設計要求。
  19. The output of filter is transformed and then dielectric loss angle ' s tangent is computed by three method - fft, faft or czt, later the three method ' s advantage and disadvantage on computing compute dielectric loss angle ' s tangent is contrasted, at last faft is selected in this system

    分別用快速傅立葉變換（ fft ） 、抗混疊快速傅立葉變換（ faft ） 、線性調頻z變換（ czt ）對濾波器輸出信號進行變換進而計算介損角正切值，然後比較它們三者在此問題上的優劣，最後我們選用faft法。
  20. The fourth, mainly talk about the phase noise in the pll, and discuss the specific affect on out put phase noise caused by different components in frequency synthesizer, such as mixer, amplifier, multipler, divider, oscillator, phase detector etc. the last part is about how to choice the natural frequency of pll in order to get the better performance in phase noise

    第二章從鎖相環的基本原理出發，介紹了鎖相環的幾個基本部件:鑒相器?環路濾波器和壓控振蕩器，對線性化鎖相環進行了詳細的分析，對數字鎖相環做了詳細的介紹，分析了鎖相環的相位噪聲模型，討論了頻綜中的混頻器
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