載波電路 的英文怎麼說
中文拼音 [zǎibōdiànlù]
載波電路
英文
carrier channel- 載 : 載Ⅰ名詞（年） year : 一年半載 six to twelve months; six months to a year; 三年五載 three to five ...
- 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...
- 電 : Ⅰ名詞1 （有電荷存在和電荷變化的現象） electricity 2 （電報） telegram; cable Ⅱ動詞1 （觸電） give...
- 路 : 1 （道路） road; way; path 2 （路程） journey; distance 3 （途徑; 門路） way; means 4 （條理） se...
- 載波 : signal carrier; carrier wave; carrier: 3路載波 three channel carrier載波傳輸 carrier transmission...
- 電路 : [訊] circuit （ckt）; electric circuit; electrocircuit電路板 circuit board; 電路保持 guard of a c...
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The video signal is directed to the crt through a sound trap which eliminates the sound-carrier frequency.
視頻信號通過聲音陷波電路，消除聲音載波頻率，直達CRT。Colour subcarrier trap
彩色副載波陷波電路This paper mainly focuses on the noise limiting by means of the direct sequence spread spectrum ( dsss ) and the analysis of the transmission performance of the plc and some digital modulation technology. the contents of the paper is as follows : 1 ) the technical feasibility is proved after simulating noise limiting principle of dsss by means of systemview, the simulation software ; 2 ) a kind of band pass filter ( bpf ) is realized according to the requirement of filter and the principle of butterworth approximation, which satisfies the index of performance of dsss. 3 ) the low voltage plc system includes the sc1128, the specific modulation / demodulation ic, the bpf filter and other circuit components, furthermore, the control function of system is realized by means of the personal computer and the microcontroller
本課題在對低壓電力線的傳輸特性和數字調制技術進行分析的基礎上，將通信理論中的直接序列擴頻技術（ dsss ）用於解決低壓電力線通信的干擾問題，主要研究內容如下： （ 1 ）用通信模擬軟體systemview對dsss技術的通信和抗干擾原理進行模擬分析，分別對時域和頻域下採用dsss技術前後接收信號的頻譜進行分析，驗證dsss技術在本系統中的可行性； （ 2 ）由dsss技術對濾波系統的要求，根據濾波理論分析了巴特沃思型濾波器的逼近原理並設計了合適的濾波電路； （ 3 ）用調制解調晶元sc1128和自行設計的濾波器加之輔助外圍電路，構造出低壓電力線載波通信系統，並採用atmel公司的單片機設計了接收和發射電路的微控制器； （ 4 ）分別對採取抗干擾措施前後輸入和輸出信號進行對比實驗，並對結果進行分析，驗證了dsss技術對干擾信號的抑制作用。Grading standard for quality of carrier telephone equipment. 12 - channel carrier telephone over wire equipment
載波電話設備質量分等標準明線. 12路載波電話設備Grading standard for quality of carrier telephone equipment. 3 - channel carrier telephone over cable equipment
載波電話設備質量分等標準.明線電纜3路載波電話設備Grading standard for quality of carrier telephone equipment. open wire high band 3 - channel carrier telephon equipment
載波電話設備質量分等標準.明線高頻3路載波電話設備Grading standard for quality of carrier telephone equipment. open wire high band 12 channel carrier telephone equipment
載波電話設備質量分等標準.明線高12路載波電話設備Measurement for 24 - channels submarine coaxial cable carrier telephone equipment
24路海底同軸電纜載波電話設備測試方法Measurement methods for 120 - channel submarine coaxial cable carrier telephone equipment
120路海底同軸電纜載波電話設備測試方法Grading standard for quality of carrier telephone equipment. 12 - channel carrier telephone underground cable equipment
載波電話設備質量分等標準.地纜12路載波電話設備The video signal is directed to the crt through a sound trap which eliminates the sound - carrier frequency
視頻信號通過聲音陷波電路，消除聲音載波頻率，直達crt 。This paper researches basic principle of microwave digital phase shifter deeply, reviews different theories of all kinds of microwave digital phase shifter circuit, analyzes loaded - line phase shifter in detail and draws design curves according to formulas. and this paper presents a novel method, which makes use of modeling simulation that software - ansoft serenade 8. 7 provides to evaluate parameter values of pin diodes through s parameter measurement. then, a kind of 6 - bit digital phase shifter circuit is designed and simulated through software - ansoft serenade 8. 7
本文對微波數字式移相器的基本理論進行了較深入的研究；綜述了各種微波數字式移相器電路的工作原理，著重對加載線式移相器電路進行了理論分析，並根據計算公式作出一系列相應設計曲線；提出利用軟體ansoftserenade8 . 7所提供的測量數據擬合功能，通過測量s參數來確定pin二極體等效電路參數的新穎實驗方法；利用微波電路設計軟體ansoftserenade8 . 7對6位數字式移相器電路進行模擬、優化設計，做出樣品，並對其性能測試分析，對研製微波數字式移相器具有重要的參考意義。Grading standard for quality of carrier telephone equipment. 24 - channel carrier telephone submarine coaxial cable equipment
載波電話設備質量分等標準. 24路海底同軸電纜載波電話設備Grading standard for quality of carrier telephone equipment. 120 - channel carrier telephone submarine coaxial cable equipment
載波電話設備質量分等標準. 120路海底同軸電纜載波電話設備Specification for 12 - channel telephone carrier terminal equipment used on the symmetric pains of 2. 6 9. 5mm coaxial cable
2 . 6 9 . 5mm綜合中同軸電纜高頻四芯組或高頻線對12路載波電話終端設備技術條件Grading standard for quality of carrier telephone equipment. 120 - channel carrier telephone small core coaxial cable equipment
載波電話設備質量分等標準.小同軸電纜120路載波電話設備Grading standard for quality of carrier telephone equipment. 960 - channel carrier telephone small core coaxial cable equipment
載波電話設備質量分等標準.小同軸電纜960路載波電話設備Grading standard for quality of carrier telephone equipment. 300 - channel carrier telephone small core coaxial cable equipment
載波電話設備質量分等標準.小同軸電纜300路載波電話設備Then test the time delay bandwidth and probability of error - code of power line carrier conmmunication network by plca - 22 protocol analyse apparatus to testify the validity of the system. at last i compare the results tested by the performance test virtual system and plca - 22 apparatus respectively, and analysis the virtue and shortage of the performance test virtual system, then bring forward the means to improve
然後使用plca - 22協議分析儀對此電力線載波網路的延時、帶寬、誤碼率進行測試，以驗證本電力線載波通信性能虛擬測試儀設計的正確性。最後對比電力線載波通信網路性能虛擬測試儀和plca - 22測試出的結果，分析電力線載波通信網路性能虛擬測試儀的優點和不足，提出了改進的方法。The performance test is to find out the factor of effecting the networks performance. performance analyse is the base and precondition of how to optimize the network performance. in the power line carrier network, it ’ s very far - ranging to test network performance by power line communication analysis apparatus plca - 22, protocol analysis apparatus lonmanager and lonscanner. but they are very expensive and can ’ t be popularized. so because of it, i design a performance test virtual system of power line carrier communication network
性能測試的目的在於找出影響網路性能的因素，從而得到提高網路性能的方法，因此性能測試是網路性能優化的基礎和前提。在電力線載波網路中，最為廣泛的方法是使用電力線通信分析儀plca - 22 ， lonmanager協議分析儀和lonscanner協議分析儀對網路的性能進行測試。但是它們都非常的昂貴，不能普及，本文針對此，設計了電力線載波通信網路的網路性能虛擬測試儀。分享友人