窄帶器件 的英文怎麼說
中文拼音 [zhǎidàiqìjiàn]
窄帶器件
英文
narrowband device-
Because period narrow band signals are the main part of background noises, this thesis uses hardware description language to design a multi - band finite impulse response filter ( fir ) and downloads the program into filed programmable gate array to eliminate the period narrow - band interferences in the background noises
3 ）在現場環境中，背景干擾主要是周期性的窄帶，本文利用硬體描述語言（ vhdl ）設計了一個多帶fir有限沖擊響應濾波器。應用到可編程邏輯器件中，消除了背景噪聲中的周期性干擾，為信號的進一步處理提供盡可能幹凈的信號。Since commercial pll ic came out, phase - locked - loop frequency synthesis has become widely accepted. but when narrow frequency - step is required, the loop bandwidth has to decrease while cannot meet the demand of frequency - hopping speed
數字鎖相集成器件出現以來，鎖相式頻率合成器得到迅速發展，但是當需要窄頻率步進時，環路帶寬需要降低，致使鎖定時間變長，不能滿足快速跳頻的要求。With the rapid development of software radio techniques, the sampling rate is becoming high. on the condition of high sampling rate, the design of narrow band fir digital filters by usual ways is impossible
隨著軟體無線電技術的發展，使信號的采樣頻率越來越高，而在高采樣率的條件下，採用常規的方法進行窄帶fir濾波器的設計是不可能的。The goal of this subject is to sum up and exploit our technique how to produce low phase noise wideband vcos, through investigating and studying the basic theory and recent research fruits, combining national condition, and produce our low phase noise wideband vcos. using high q components, such as : coaxial resonator, dielectric resonator, makes bandwidth of vco become narrower, so that recently common wideband vcos generally make inductor and capacitor ( lc ) as resonators, combining varactors with wide range tunable capacitance, and achieve the wideband
本課題旨在通過對低相噪寬帶vco的基本原理、國內外在這方面的進展，結合國內的實際情況進行研究，總結和開發出自己的方法，形成自己的理論。並把它運用於實踐，以製造出低相噪的寬帶vco 。由於加入高q元件，如：同軸諧振器、介質諧振器等，會導致振蕩器帶寬比較窄，目前的寬帶vco一般採用電感電容（ lc ）作為諧振元件，輔之以大變容範圍的變容二極體，達到寬帶的目的。Polarizing beam splitter based resonant anomaly and achromatic polarizing beam splitter, narrow - band filters independent of polarization are theoretically designed and analyzed, the optical elements of which are applied widely in integration optics and optical fiber communication
理論上設計和分析了共振異常型偏振分離器、消色散型偏振分離器和與偏振無關的窄帶濾波器，這些光學元件集成光學、光纖通信等中有廣泛的應用。As pointed out earlier, those sources eliminate the need for a heavy external magnet. two hpm sources magnetically insulates line oscillator ( milo ) and the reltron have been researched and improved. finally, a new high power microwave source, the axial acceletron is presented in this paper
首先對幾種高功率窄帶微波源進行了評估，然後著重研究無引導磁場最具備代表性的兩種器件，磁絕緣線振蕩器（ milo ）和super - reltron ，並提出了改進的措施。分享友人