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- image frequency selectivity 像频率选择性
- We get finally a multilayered LTCC three-stage bandpass filter with a small size and high frequency selectivity. 通过上述场与路相结合的设计方法,获得了尺寸小、频率选择特性好的多层LTCC三级带通滤波器。
- It is characterized by good frequency selectivity, low insertion loss and high attenuation of specified frequency. 它具有频率选择性好,通带插损低,对陷波频点抑制较高的优点。
- I/Q imbalance problem causes finite rejection in the image frequency band, and the image interference will alias into the desired signal, severe distortion will occur. I/Q不平衡问题将会造成接收机的镜像干扰排斥能力大幅降低,镜像干扰将使得欲接收的信号严重失真。
- Increase in damping weakens the maximum impeding effect, but it widens the frequency band of im-Pedimellt and improves the frequency selectivity accordingly. 阻尼增加虽降低了最佳的阻抑效果,但抑制的频带宽了,改善了阻抑效果的频率选择性;
- Increase in damping weakens the maximum impeding effect, but it widens the frequency band of impediment and improves the frequency selectivity accordingly. 阻尼的增加虽降低了最佳的阻抑效果,但能够使抑制的频带变宽,改善了阻抑效果的频率选择性;
- Through testing, its noise figure is 5.5dB, mixing gain is 5dB, its image frequency rejection adds up to 19dB, which all meet the requirements for the system (NF=7.5dB, Gain=3dB) . 经测试,该接收机前端的噪声系数为5.;5dB,变频增益为5dB,镜频抑制度为19dBc,均超过了系统要求的指标(噪声系数7
- The superficial layers are often frequency selective to transmission. 表层传播一般都有频率选择性。
- The core part of the circuit is differential and frequency selection. 电路核心部分由微分电路和选频电路组成。
- Due to the frequency selectivity, non-stationary and multipath effect of the ionosphere, it is difficult to measure the beam width of OTHR antenna in azimuth of this kind of radar. 摘要由于传输信道电离层存在频率选择性、非平稳性和多径效应,对天波超视距雷达的方位波束宽度性能进行测试存在着相当的困难。
- image frequency monitored control 视频监控
- Frequency selective surface (FSS) is a two-dimensional periodical structure and used mostly in the filter. 频率选择表面(FSS)是一种具有二维周期性结构的滤波结构,主要在滤波器上使用。
- Jakes frequency selective fading channel model complete source code, has been tested. (译):杰克斯频率选择性衰落信道模型的完整的源代码,已经过测试。
- The heroine is the spitting image of the author. 书中女主人翁是作者的真实写照。
- Frequency selectivity of resonant circuit 共振电路的频率选择性
- A novel design method for frequency selective surfaces(FSSs) in application of a double curved streamlined radome is presented in this paper. 提出并发展了一种适于任意双曲率曲面雷达罩的FSS设计方法。
- I have this image of you as always being cheerful. 在我的心目中,你的样子总是兴高采烈的。
- In order to realize wideband filtering properties of frequency selective surface (FSS), FSS of closely packed elements is presented. 为了实现频率选择表面(FSS)的宽带滤波特性,本文给出了单元紧密排布的FSS结构。
- The minister is trying to improve his public image. 部长正在努力提高他自己的公众形象。
- His good image has stolen up on my brain. 他的良好形象已渐渐在我头脑中形成。