超頻段 的英文怎麼說
中文拼音 [chāobīnduàn]
超頻段
英文
super band-
Mixers are the key components of many microwave and millimeter - wave systems. the super - heterodyne receiver is always applied in modern communication system, mixer becomes the key component as is at the first part of system. but it is more and more difficult to get the choiceness lo source of the same band with the system is working at high frequency especially in the millimeter - wave. sub - harmonic mixer is a good solution to this problem now. in this circuit we need just half 、 quarter 、 even 1 / 8 of the rf signal frequency. in this paper the design and fabricate of sub - harmonic hmic mixers ( 2, 4 ) at w - band are introduced
混頻器是微波通信、射電天文學、雷達、等離子物理、遙控、遙感、電子對抗，以及許多微波測量系統中至關重要的部件。在現代通信系統中，毫米波頻段通常採用超外差接收機，混頻器作為第一級就成為關鍵部件。由於在毫米波頻段，同頻段高性能的本振源成本高，技術難度大，採用分諧波混頻技術是解決此問題的有效途徑，只需射頻頻率1 / 2 、 1 / 4甚至1 / 8的本振頻率即可實現混頻。120 ac, air conditioned, airline desk, baby sitting, bar, barber shop, beauty salon, porters, boutiques, business center, conference facilities, coffee shop, coffee maker, concierge desk, 24 hour front desk, disco, drugstore, driving range, elevators, florist, exercise gym, hairdryer in room, health club, horseback riding, international direct dial, kitchenette, guest laundromat, maid service, mini bar, modem jack, multilingual, free newspaper, news stand, small pets allowed, playground, heated pool, indoor pool, outdoor pool, poolside snackbar, bus parking, parking, putting green, refrigerator, restaurant
酒店擁有標準間豪華間商務豪華間及商務套間，以及商務豪華復式套房408間，房內設施全，設有彩色電視衛星電視頻道閉路電視及收音波段室內冰箱獨立冷暖風空調系統。酒店的「浪花」會員制娛樂部更擁有北京市獨有的室內外連通的超豪華暖水游泳池，溫泉歐式桑拿日式沖浪按摩及太陽浴將滿足您健身及放鬆的需要。酒店附近的跑馬場和27洞高爾夫球場則是鍛煉的好去處。Undermentioned frequency is each age paragraph optimal number, exceed or under this data person all belong to owe beautiful : 20 years old of minutely optimal ventilatory frequency ( breathe out whiff is ) it is 18 20 times ; 30 years old are 15 18 times ; 40 years old are 10 15 times ; 50 years old are 8 10 times ; 60 years old are 5 10 times
下述頻率為各年齡段的最佳數，超過或低於該數據者均屬欠佳： 20歲每分鐘最佳呼吸頻率（一呼一吸為一次）為18 20次； 30歲為15 18次； 40歲為10 15次； 50歲為8 10次； 60歲為5 10次。In this paper, for 2 ~ 2000mhz broadband rf front - end, using subsection processing fixed intermediate frequency superheterodyne architecture, and combining with the actual component ’ s level, a broadband rf front - end system simulation platform is presented, which provided the universal, standardization, and modularization of transmitter and receiver
本文針對頻率范圍2 2000mhz的寬帶射頻前端，採用分段處理的固定中頻超外差結構，並結合目前的器件水平，建立了一個通用化、標準化、模塊化的寬頻帶射頻前端發射機和接收機系統模擬平臺。Enterprise pessess of advanced electing cooker of frequency conversion semiconductor superior checking electric cooker etc. complete heat treatment equipment, equipments, precious physical and chemical experiments and quality guarantee system lay the reliable foundation for casting the products of high quality
公司現擁有先進的固體變頻電爐、半導體變頻電爐、消失模鑄造生產線、拋丸清理設備及完整的熱處理設備，超前的檢測設施、精確的理化實驗、完備的管理檢測手段及質量保證體系為鑄造高品質的產品奠定了堅實的基礎。Current research of vls - vod are focused on scalable software and hardware architecture and effective bandwidth - sharing mechanism, which are two foundation stones in scaling the vod system to serve more users
可擴展的視頻服務器軟硬體體系結構和高效的帶寬復用策略是擴展vod系統服務規模的兩個主要手段，已成為超大規模vod研究中的熱點。And classic pid control method and numerical pid control method have been introduced in the paper. the paper adopt stabilization border method to set the pid parameters and simulates the control system which is based on matlab / simulink. simulation results indicate that pid control ’ s simulation results have a good effect in low - frequency stage, but it is not perfect in mid - frequency and high - frequency stage
採用穩定邊界法實現對pid參數的整定，並基於matlab / simulink對控制系統進行了模擬，模擬結果表明:低頻段pid控制正弦跟蹤曲線取得了良好的效果，而在中頻和高頻段時的跟蹤效果不是很好， pid控制的階躍響應超調量較大， pid控制三角波曲線的高頻性能也不理想。And some useful rules are concluded from these experiments. the pd signals on different frequency scopes are surveyed, and the thesis explores anti - noise narrowband detection of partial discharge signals. for the first time the thesis brings forward the choosing - frequency detection of pd ground on the radio frequency communication
同時，進行了局部放電不同頻段信號檢測，為窄帶抗干擾檢測技術奠定基礎，並首次提出基於射頻通訊原理的選頻檢測原理及檢測設想；在實驗室中進行了局部放電超高頻信號的檢測，驗證了超高頻法檢測局放信號時對空間電暈干擾的抑制作用。Many technologies of electrically small antennas and wide band antennas are discussed in theory, simulation and experiment. and some novel electrically small or wide band antennas are proposed. the loaded monopole is analyzed in depth integrating the genetic algorithm ( ga ) with the method of moments ( mom ) in order to increase the gain and decrease the vswr of antennas used at hf / vhf band
在本論文的研究過程中，通過合理利用各種現有的天線寬帶化和小型化的理論成果、有效的綜合各種技術措施，運用矩量法和遺傳優化演算法等數值方法，深入研究了加載單極子天線問題，旨在全面提高高頻/甚高頻頻段內的天線增益和降低電壓駐波比，以獲得較高增益的、基本滿足駐波要求的小型超寬帶天線。The investigation is very useful not only in further studying the electromagnetic scattering characteristics of complicated large objects over the whole frequency band, but also in improving and designing the wide - band radar, ultra wide - band radar and new wide - band radar absorbing material
本文的研究，為今後進一步開展復雜電大目標全頻段電磁散射特性的研究提奠定了基礎，為寬帶雷達和超寬帶雷達的設計與開發，新型寬頻帶隱身材料的研究提供理論指導。There are functions such as drawing the chart of amplitude - frequency and phase - frequency, calculating and displaying the highest peak value, the total sum of amplitude and the effective line - breadth of the signal in the program. so an effective technical means is supplied for the analysis of ultrasonic signal
軟體系統具有幅頻圖及相頻圖的繪制、最高峰值、諧波系數及有效譜寬度的計算及顯示等功能，從而為超聲信號的頻譜分析提供了極其有效的技術手段。Therefore, the general trend of ebinur lake ’ s development in the future is in water shortage. in some special periods, the annual and age lake area sometime will exceed 800km2 1000km2. but the frequency is not high, it will have less effect on the
因此，艾比湖未來發展總體趨勢仍處于缺水狀況，在年內和年際某些特殊時段，湖面會出現超過800km2 1000km2的短時過程，但出現的頻次不高，對沿湖鐵路線的影響較小。In order to hold the performance of the antenna array of hf radar the length of antenna array is also very long
高頻超視距雷達工作在短波波段，為了保持一定的天線陣性能，天線陣尺寸通常也較大。The electromechanical coupling field of stator vibration is analyzed by finite element method
應用有限元法對電機定子振動過程中的機電耦合場進行分析，提取超聲頻段的振動模態。I have a very bad memory, but the events of september 1983 are still etched in my mind as sharp as ever. sitting now in the office early on a quiet saturday morning in september 2003 trying to stock up on viewpoint articles ahead of a period with heavy travelling commitments does make the mind wander. the grim faces on the street, the empty shelves in the supermarkets, the phone calls seeking inside information firmly declined, the bigger and bigger foreign exchange orders placed with our agent banks to support the currency, the stoney silence in the corridors on the 24
月一個寧靜的星期六早上，我坐在辦公室里，希望在接下來的幾個星期頻頻外訪之前，可以多寫幾篇專欄文章備用，腦際難免泛起廿年前段段的回憶：街上的人木無表情超級市場貨架空空如也不停接到希望可以打聽內幕消息的電話當然全部被我斷然拒絕我們向代理銀行下達數額越來越大的外匯買盤以支持港元當時的金融科辦事處海富中心I don ' t believe into any groundbreaking revolutions after epc standards were created and uhf regulations opened uhf band for rfid use
我相信沒有什麼比epc標準和為使用rfid而開放超高頻頻段，設立規則更有革命性突破意義了。At present, superconductor filter subsystems have been deployed abroad in the field of mobile communication and offered exceptional commercial performance. the design of hts filters is a comprehensive problem of network analysis. according to the condition of calculation and practical size of superconducting films, we configured compacted forward - coupled microstrip filter, with the aid of tumic and sonnet software
高溫超導濾波器的設計是一個網路綜合的問題，根據我們目前的設計條件和超導薄膜的尺寸因素，我們選用了結構緊湊的前向耦合型電路設計，應用tumic和sonnet模擬軟體，設計了用於移動通訊頻段的高溫超導濾波器，並對幾個重要參數進行了實驗測試和分析。The test result indicates that the vivaldi antenna has better radiation performance that accords with the theory analyses frequency domain on 3. 1ghz
測試結果表明，該天線在3 . 1ghz 10 . 6ghz頻段內得到比較滿意的輻射性能，實現了超寬帶技術要求，與理論分析吻合較好。This scheme has been used in the project of “ multi - band, multi - mode digital ultrashort wave radio ” and “ software radio data transmission radio ”
該方案已經應用於某公司的「多頻段、多模式機載數字超短波電臺」和「軟體無線電數傳電臺」的項目中。This paper has designed and manufactured a htsc filter working at uhf frequence, in the use of a full - wave solver
本文採用一種全波電磁模擬軟體，設計製作了uhf頻段超導濾波器。分享友人