spurious frequency 中文意思是什麼
spurious frequency
解釋
寄生頻率-
Test method for low frequency and spurious disturbances
低頻與寄生干擾的試驗方法 -
For a start, the principle, configuration, spectrum distribution of dds are illuminated in this paper. the distributions of spurious frequency are specially analyzed in this section
本文首先講述了dds的原理、結構和頻譜分佈，其中重點講述了dds的頻譜分佈的雜散分析。 -
The imperfection mutual inductance will excite spurious frequency, and create circulating currents in each choke capacitor branch, therefore cause magnet current distortion
結果表明，諧振電抗器的互感系數的不一致性將激勵寄生頻率，從而在每個諧振電抗器與電容支路中產生寄生電流，並導致磁鐵電流的畸變。 -
Spurious response frequency
散射響應頻率 -
At present the manufacture of surface acoustic wave use the technology of the final submicron. a series of the devices of low insertion loss, high q saw rayleigh surface acoustic wave resonators or stws that insertion loss has less than 5db, load quality factor ( ql ) is more than 1000 on the quartz piezoelectric with zero of first temperature factor in the research. these difference frequencies are 60mhz, 280mhz, 739mhz and 1ghz of normal frequency and at also surface acoustic wave. using 1. 25db noise factor amplifier, careful design curcuit, good setting printed curcuit board, and using the 1ghz surface transverse wave resonator as frequency element, researching the low phase noise surface acoustic wave with sideband phase noise near ? 120dbc / hz deviating 1khz on carrier, spurious suppress with 80db
本研究採用一階溫度系數為零的壓電石英基片上製作出損耗小於5db 、有載品值因素（ ql值）超過1000的一系列低損耗、高q值聲表面波rayleigh波或stw諧振器，頻率分別為60mhz 、 280mhz 、 739mhz和1ghz等不同頻率的高性能聲表面波諧振器。並採用噪聲系數為1 . 25db的低噪聲系數放大器，精心設計電路，優化設計布置印製電路板，用標稱頻率為1ghz的聲表面波諧振器為頻率控制元件，製作出在偏離載頻1khz處的單邊帶相位噪聲近- 120dbc / hz 、雜波抑制達80db以上的低相位噪聲聲表面波振蕩器。 -
Aiming at the scheme of the signal electromagnetic environment simulator of the wireless communication system, the mission of this project is to design and realize twenty - four frequency synthesizers, which must meet high expectation for the phase noise characteristic and the spurious repression characteristic of the output clock signal. these frequency synthesizers provide the moving of the basic signal generating modules to radio frequency with stable inspiring source
本課題的任務是針對通信信號電磁環境模擬器系統的方案要求，設計實現24個（頻率分佈在260mhz 1430mhz之間）對輸出時鐘信號的相位噪聲特性、雜散抑制特性等要求都很高的頻率合成器，為基本信號生成模塊到射頻的搬移提供穩定可靠的激勵源。 -
In pulse code modulation, a spurious signal formed from beats between the signal frequency and the sample frequency
在脈沖編碼調制中，信號頻率和取樣頻率之間的差拍所引起的偽信號。 -
At first, this paper described the basic structure, working principle, sources of spurious signals and characteristics of output spectrum, of direct digital frequency synthesizer ( dds )
首先分析直接數字頻率合成器（ dds ）的基本結構、工作原理、雜散來源、輸出頻譜特性。 -
What ' s more, some problems that should be pay attention to the design of dds / pll signal generator are analyzed particularly. the author clarifies the distributions of spurious frequency and the suppressing for output spurs in dds in this section
然後深入分析了dds / pll信號發生器設計中應注意的問題，其中特別對dds的雜散分佈和抑制提出了一些見解。
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