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- quadrature phase detector 正交鉴相器
- The performance estimation of quadrature phase shift keying (QPSK) signaling over a Rice lading channel was simulated and the corresponding analyzing results were obtained. 最后，对数字调制后的QPSK信号通过莱斯衰落信道时的性能进行了仿真估计，并得到相应的分析结果。
- This paper disscusses the interception methods of quadrature phase shift keying (QPSK) radar signal, which include spectral correlation detection and wavelet analysis. 本论文讨论四相编码雷达信号的侦察、截获方法。
- The essential blocks of the synthesizer, the prescaler, the phase detector, the chargepump, and the voltagecontrolled oscillator were presented. 提出了合成器的基本模块，包括预分频器，鉴相器，充电泵和压控振荡器。
- In this scheme,the synthesizer contains a low-noise phase detector to achieve the performance of low phase noise and low spur level. 本方案采用了低底噪鉴相器,实现低相噪和低杂散指标。
- Its coder phase detector is proved for lts normal operation during drum imitation test and signal of coder works with no errors. 在模拟钻机滚筒振动试验中,验证了设计的鉴相电路工作正常,编码器测量信号未发生误计数现象。
- This thesis presents a circuit architecture to realize clock recovery for fast Ethernet application, including system architecture, modified Mueller Muller algorithm for 100BASE-TX, phase detector for 100BASE-FX and multiple output charge pump PLL. 提出了一种快速以太网卡芯片时钟恢复电路的设计 ,包括体系结构、用于 10 0BASE tx的改进MuellerMuller算法、用于 10 0BASE FX的鉴相器以及产生多相时钟的电荷泵锁相环。
- OQPSK. Offset quadrature phase shift keying 偏置的正交频移键控
- This paper analyses survey principle of 1532 dielectric log tool,and analyses circuit amplitude detector and phase detector in 1532 dielectric log tool. This paper focuses on dual gate MOSFET and photocoupler for AGC,SCI and FB for noise reduction. 文章介绍 15 32型介电测井仪的测量原理 ,并分析了 15 32型介电测井仪的幅度测量系统和相位测量电路 ,以及用于自动增益控制 (AGC)的双栅极场效应管和光耦合器 ,以及用于抑制噪声的穿心电容器和铁氧体磁珠
- A-QPSK Aeronautical Quadrature Phase Shift Keying 航空四相相移键控
- QPAM Quadrature Phase and Amplitude Modulation 正交相位和幅度调制
- The system s transfer function is analyzed, especially the one of the filter which is connected between VFD and the phase detector, and it should be established on the group delay concept. 根据功能,认为变频器输出电压滤波器的传递函数需要使用群时延概念,为更精确地分析这类问题提供了依据。
- QPSK Quadrature Phase Shift Keying 正交相移键控
- DQPSK. Differential quadrature phase shift keying 差分正交相移健控
- 4 Offset quadrature phase shift keying 4偏置四相相移键控
- The mathematic module of the PLL was built and the sub-circuit such as Phase Detector(PD),Charge Pump(CP),Loop Filter(LF) and Voltage Control Oscillator(VCO) was designed cautiously. 主要包括：研究了该锁相环系统建模，完成了鉴相器(PD)、电荷泵(CP)、环路滤波器(LF)以及压控振荡器(VCO)子电路设计。
- phase locked loop quadrature phase shift 锁相环四相相移键控
- differential quadrature phase shift keying 差分四相相移键控
- quadrature phase shift keying(QPSK) 正交相移键控
- quadrature phase and amplitude modulatio 正交调幅调相
