摘要
针对传统加窗、相干采样等方法准确度不够高或条件苛刻难以实现的缺点,提出了采样后相干方法测试ADC的动态参数。该方法能很好地抑制频谱泄漏的影响;另外,对频域内计算信号功率易受栅栏效应影响的问题,提出了采用信号重构的方法恢复测试信号,然后在时域和频域分别计算信号功率和噪声功率的时-频域计算方法。给出的例子证明了这种方法优于传统方法,具有很高的准确度,而且易于实现。
To solve problems with conventional methods for testing ADC dynamic parameters, such as windows and coherent sampling, which are not accurate enough or hard to realize, a novel technique called coherent-after sampling was presented, which can suppress spectral leakage effectively. To prevent picket-fence effect, a novel technique based on signal recovery was proposed to calculate signal power in time-domain and noise power in frequency-domain, respectively. An example was given to demonstrate the effectiveness of the proposed technique, which has high precision and is easy to implement.
出处
《微电子学》
CAS
CSCD
北大核心
2008年第6期782-786,共5页
Microelectronics
关键词
A/D转换器
动态参数测试
频谱泄漏
栅栏效应
采样后相干
A/D converter
Dynamic parameter test
Spectral leakage
Picket-fence effect
Coherent-after-sampling
