Mixer-based, vector-corrected, vector signal/network analyzer offering 300kHz-20GHz bandwidth and traceable phase response
Mixer-based, vector-corrected, vector signal/network analyzer offering 300kHz-20GHz bandwidth and traceable phase response
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DOI：
10.1109/mwsym.2005.1516977
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发表时间：
2005-06
期刊：
影响因子：
--
通讯作者：
P. Blockley;D. Gunyan;Jonathan B. Scott
中科院分区：
文献类型：
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作者：
P. Blockley;D. Gunyan;Jonathan B. Scott
我们描述了一种仪器，它使用定向桥和一个五通道，混频器为基础的接收器，使从0.3MHz到20 GHz的信号的矢量校正测量。该仪器可在时域或频域产生电压、电流或行波，无杂散动态范围/spl ap/85 dB，相位精度可追溯至国家标准实验室。该仪器用于表征放大器对宽带复调制信号的影响。结果进行了比较，使用校准的采样示波器收集的数据，配备捕捉长时间的记录时基校正。我们显示的效果，如输入阻抗引起的失真，可以看到只有与这种新的仪器。
We describe an instrument that uses directional bridges and a five-channel, mixer-based receiver to make vector-corrected measurements of signals from 0.3MHz to 20GHz. This instrument yields voltage, current or travelling waves in either time-domain or frequency-domain with /spl ap/85dB SFDR and with phase accuracy that can be traced to national standards laboratories. The instrument is used to characterize the effect of an amplifier on a wideband complex-modulated signal. Results are compared with data gathered using a calibrated sampling oscilloscope equipped to capture long records with timebase correction. We show effects such as input-impedance induced distortion that can be seen only with this new instrument.