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if filter
相关语句
  中频滤波器
     Design of an AD6620-based IF Filter
     基于AD6620的中频滤波器的设计
短句来源
     SAW Color TV IF Filter
     SAW彩色电视中频滤波器
短句来源
     But bandpass filter, IF filter and FFT spectrum analyzers′ realization methods are different in some parts.
     然而各种频谱分析仪实现方法不尽相同,如带通滤波 器频谱分析仪、中频滤波器频谱仪和FFT频谱仪。
短句来源
     Digital oireless phone used SAW filters,or 110 592 MHz IF filter and 900 MHz series RF filters are introduced in this paper.
     简要介绍了四川压电与声光技术研究所研制的数字无绳电话用声表面波滤波器 ,包括 110 .5 92 MHz中频滤波器和 90 0 MHz系列射频滤波器。
短句来源
     This paper introduced the conception of resolution and IF filter in brief first,then described the principle of the realization of digital IF filter in detail,and showed the application on TMS320C6701. Compared with analog filter,the application result explaines that digital IF filters have advantages in many respect,such as resolution bandwidth,shape factor and measurement speed.
     本文首先简述了分辨率和中频滤波器概念,然后详细描述了数字中频滤波器的实现原理,最后介绍了数字中频滤波器在DSP芯片TMS320C6701上的运用。 实际应用结果说明,数字中频滤波器比模拟滤波器在可实现最小分辨率带宽、滤波器波形因子、测量速度等方面都具有很大的优势。
短句来源
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  “if filter”译为未确定词的双语例句
     In the paper the fabrication of ZnO thin film is described briefly as well as main properties of SAW substrate materials with ZnO/glass layered structure. And the fabrication and applications of the SAW TV IF filter with ZnO thin film are presented.
     本文简要介绍了ZnO薄膜的制作,ZnO/玻璃层状结构这种SAW基片材料的几个主要性能以及ZnO薄膜SAW TV IF滤波器的制作和应用。
短句来源
     Finally, the RF & IF frequency synthesizer, RF & IF mixer, RF & IF filter, and PA were realized.
     这样可以节约设计时间,简化设计步骤。 本文实现了高频频率合成器、混频器、滤波器,中频频率合成器、混频器、滤波器,以及功率放大器模块。
短句来源
     In the high-speed digital communications, lots of filters are used, if filter's phase response characteristic is not matching, it will reduce the reliability of information transmission and increase code error rate.
     在高速的数字通信中,一般会用到大量的滤波器,如果滤波器的相频特性不好,信号通过时会产生角度偏移,降低信息传输的可靠性,导致误码率提高。
短句来源
     The cracking of LiNbO3 single crystals in the process of SAW TV IF filter fabrication is discussed. Techniques for solving this problem are proposed.
     本文讨论了制作SAWTVIF滤波器的工艺中LiNbO_3单晶和晶片的开裂,并提出了解决问题的方法。
短句来源
     This ceramic material has a large bending strength of 2300 kg/cm~2 and fine grain sizeof 1—2μm,suited for the needs of SAW filters and sensors. The LNN-20 ceramicspossess the advantages of nonpollution,low cost,good dielectric and piezoelectricproperties. A 37 MHz SAW TV IF filter has been made from such modified ceramics.
     其抗折强度为2300kg/cm~2,晶粒尺寸为1~2μm,无公害,工艺简便,成本低,介电、压电性能好。
短句来源
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  相似匹配句对
     If V(?)
     如果V(?)
短句来源
     If C (?)
     如果C(?)
短句来源
     On the Filter
     关于共轭滤波器
短句来源
     The other is low-IF complex filter.
     另一个是低中频复数滤波器设计。
短句来源
     SAW Color TV IF Filter
     SAW彩色电视中频滤波器
短句来源
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  if filter
The geostatistically optimal FK filter coefficients, however, do not guarantee an optimal filtering effect, if filter geometry (size and shape) are not properly selected.
      
With the output matched to the IF filter impedance of 600 the voltage gain of the mixer, is measured to be 8.5 dB.
      
Unlike the receiver, the requirements of the IF filter are substan tially relaxed as no close-in, large blocking signals are present.
      
The second IF filter is centered on 1MHz, and drives a double tuned quadrature type FM demodulator.
      
The second IF filter and the audio demodulator, as well as the squelch and RF output LED drive are provided by one monolithic integrated circuit.
      
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Resolution is an important criteria of a panoramic receiver.In this paper,thedefinition of the resolution,the static and dynamic resolution,and the computationmethod of resolution under some conditions are discussed.A general formula has beenderived.This formula indicates that the resolution of the panoramic receiver is pro-portional to its bandwidth,and the factor of proportionality ζ depends upon the typeof the IF filter and the detector.The values of ζ are given for different conditions.All the results...

Resolution is an important criteria of a panoramic receiver.In this paper,thedefinition of the resolution,the static and dynamic resolution,and the computationmethod of resolution under some conditions are discussed.A general formula has beenderived.This formula indicates that the resolution of the panoramic receiver is pro-portional to its bandwidth,and the factor of proportionality ζ depends upon the typeof the IF filter and the detector.The values of ζ are given for different conditions.All the results in this paper are also compatible with the spectrum analyzer.

分辨能力是全景接收机的重要指标。本文讨论全景接收机分辨能力的定义,静态和动态分辨能力,以及在若干条件下计算分辨能力的方法。文中导出了分辨能力的通用公式。公式表明,全景接收机的分辨能力与其通频带成正比,比例系数ξ取决于中频滤波器和检波器的程式。不同条件下的ξ值已在文中给出。本文中的全部结果也适用于频谱分析仪

In the paper the fabrication of ZnO thin film is described briefly as well as main properties of SAW substrate materials with ZnO/glass layered structure. And the fabrication and applications of the SAW TV IF filter with ZnO thin film are presented.

本文简要介绍了ZnO薄膜的制作,ZnO/玻璃层状结构这种SAW基片材料的几个主要性能以及ZnO薄膜SAW TV IF滤波器的制作和应用。

LiTaO3 Single crystal is one of the most useful substrate materials for TV-IF filters. When a SAW is propagated along the rotated 112Y direction on the X-cut plate, LiTaO3 single crystal exhibits such excellent SAW properties as low temperature coefficient of delay time, compromise coupling coefficient and low spurious level of bulk wave. In order to grow LiTaO3 crystals available for SAW devices, the growth conditions of x-axis LiTaO3 single crystals with large dimensions at low cost were investigated...

LiTaO3 Single crystal is one of the most useful substrate materials for TV-IF filters. When a SAW is propagated along the rotated 112Y direction on the X-cut plate, LiTaO3 single crystal exhibits such excellent SAW properties as low temperature coefficient of delay time, compromise coupling coefficient and low spurious level of bulk wave. In order to grow LiTaO3 crystals available for SAW devices, the growth conditions of x-axis LiTaO3 single crystals with large dimensions at low cost were investigated by the Czochralski technigue. A large LiTaO3 single crystal with dimensions of 40-50mm in diameter, and 50-60mm in length was successfully grown using an economic Pt-Rh crucible. The elastic, piezoelectric, and dielectric constants have been determined for LiTa03 single crystals at room temperature.

X切割112°YLiTaO_3单晶是用作TV-IF滤波器的最有用的基片材料之一。为了生长供SAW器件使用的LiTaO_3单晶,用提拉法研究了大直径低成本的LiTaO_3单晶的生长条件。用廉价的Pt-Rh坩埚成功地生长出了直径40—50毫米、长50—60毫米的大的LiTaO_3单晶。测量了室温下LiTaO_3单晶的弹性、压电和介电常数。

 
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