phase quadrature meaning in English
方照
相位正交，90度相移
转像差
转像相差
Examples
- By appropriately tuning the cavity resonant frequency , squeezing in the phase quadratures can be enhanced or reduced
适当调节腔的共振频率，可以使压缩效应增强或减弱。 - The variances of the sum of the amplitude quadratures of the three obtained optical modes and the relative phase quadratures among them is respectively 3 . 28 dbm and 3 . 18 dbm below the corresponding shot noise limit
完全不可分判据中三个不等式左边的值分别为1 . 90 ， 1 . 83和2 . 94 ，全部小于归一化后的散离噪声极限4 。 - When the nopa was operated at amplification , the epr states with amplitude - quadrature correlation and phase - quadrature anticorrelation were generated firstly in 1999 . the product of the amplitude and phase quadrature correlation degrees was 0 . 727 0 . 004 < 1 ; after the laser source was reconstructed , the epr beams with amplitude - quadrature anticorrelation and phase quadrature correlation were obtained in 2001 and the product of the correlation degrees was 0 . 332 0 . 003 when the nopa was operated at deamplification . 2
参量放大过程产生的纠缠光束具有正交振幅正关联、正交位相反关联的特性，乘积关联度为0 . 727 0 . 004 1 ；改进光源后，利用参量反放大( deamplification )过程产生了正交振幅反关联、正交位相正关联的明亮epr纠缠光束，乘积关联度达到0 . 332 0 . 003 1 。 - Analyze , design and simulate the digital down - convert frequency . first , the analogue if signal is converted to digital if signal in one a / d convertor which used passband sampling theory . the digital if signal is then passed to a pair of digital mixers operating in phase quadrature for mixing the if signal to baseband signal
首先利用带通采样定理对中频模拟信号进行a / d变换后将其混频到基带，然后用平方根升余弦滚降滤波器同时完成低通滤波和匹配滤波双重作用，以提高解调器的效率。