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- The technical requirements include channel selection, noise figure and radiation emission limits. 技术要求包括频道选择、噪声系数和辐射发射限值。
- The LNA and AGC are two important modules in the TT &C transponder circuit. I bring forward a method to minimize the noise figure of the whole transponder with the help of ADS. 对测控应答机中低噪声放大器(Low Noise Amplifier,LNA)和自动增益控制电路(Auto Gain Controllor,AGC)这两个重要模块进行了分析。
- Features: Small reverse transfer capacitance, low noise figure. 特点:反向传输电容小,低噪声。
- It uses noise-canceling technique for low noise figure (NF). 该放大器使用了杂讯抵消的技术,以达到低杂讯指标。
- Advocates of this idea point to two channels. 这一观点的拥护者指出了两个渠道。
- One is the robustness against channel noise;the other is the computational complexity of codebook search. 第一个是增加向量量化的抗杂讯能力,另一个则是减少码书搜寻的复杂度。
- The noise figure of the tuner is 5.3dB, and the dynamic range of AGC control is more than 50dB. 制作的UHF电子调谐器噪声系数为5.;3分贝;自动增益控制能力达50分贝以上
- Sixteen channel unattached video input signal is divided into Sixteen group two channel video output signal by sixteen video assigner . 十六通道视频分配器,能将十六路完全独立的视频输入信号分配成十六组二路视频输出信号。
- The typical value of the DSB noise figure of the mixer diode is 4.8 dB at 35 GHz,which ac-cord with the prospection. 研制出的混频管在35GHz时双边带噪声系数为4.;8db;接近预期结果
- Method Two channel surface EMG signals were extracted and analyzed to reflect the complexity degree of the dynamics of the neurophysiological system. 方法采用一种算法简单、适合短数据运算的复杂度算法 ,提取双通道表面肌电信号的复杂度信息来反映运动神经系统运动的复杂程度。
- Lowest noise figure of a RF transistor is not normally where the input is perfectly matched. 射频晶体管的最低噪声系数通常不在输入完全匹配的地方。
- TMS320LF2407A, one special motor control DSP chip, is used to output two channel PWM control signals, driving pitch and azimuth motors separately. 本设计利用电机控制专用芯片-TMS320LF2407A,独立输出两路PWM控制信号,分别驱动高低和方位两个伺服电机。
- The HEMT fabricated using this structure demon-strates a noise figure of 0. 76 dB and a gain of 6.5dB at 1? GHz. 用该结构材料制作的HEMT器件在12GHz下;噪声系数0.;76dB;相关增益6
- To avoid the variance of DCSK signal itself and decrease that caused by additive channel noise,a novel DCSK scheme with chaotic polyphase sequence(CPS) is presented. 经过对上述三种因素的分析 ;提出了一种新型的DCSK通信系统 ;该系统使用混沌多相序列 (CPS)避免DCSK信号本身带来的误差 ;同时采用相空间量子化的方法降低加性信道噪声的干扰 .
- The impact of gain, noise figure, and stability on RF CMOS image-reject LNA has been studied. 此篇文章将深入的探讨影像抑制金属氧化型低杂讯放大器的增益、杂讯指数和稳定度。
- Two channel estimation methods based on Discrete Cosine Transform(DCT) are proposed for Orthogonal Frequency Division Multiplexing(OFDM) systems in multi-path fading channel. 提出了两种基于离散余弦变换(DCT)的信道估计方法,适用于多径衰落的正交频分复用(OFDM)系统。
- Features: High gain bandwidth product, small output capacitance,low noise figure. 特点:产品增益带宽高,输出电容小,噪声系数低。
- It is shown that the SNR is non-monotonic functions of the intensity of neurotransmitter arrivals trains and the strength of the voltage-gated channel noise. 结果表明,神经元放电的峰峰间隔是神经递质的达到强度、离子通道噪声强度的非单调函数。
- Mainly include the design of directional multi microphone system, two channel procession circuit, notch filter, squelch, wide dynamic range compression (WDRC) , tone generator. 主要包括方向性麦克风系统、双通道信号处理、消除声反馈、消除背景噪声、宽动态压缩、纯音发生器等部分的设计 .
- Features: High power gain, low noise figure, very low intermodulation distortion. 特点:高功率增益,低噪声输出,非常低的互调失真。