AC and DC bipolar voltage source using quantized pulses

被引：43
作者：
Benz, SP [1 ]
Hamilton, CA [1 ]
Burroughs, CJ [1 ]
Harvey, TE [1 ]
机构：
[1] Natl Inst Stand & Technol, Boulder, CO 80303 USA
来源：
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 1999年 / 48卷 / 02期
关键词：
digital-analog conversion; Josephson arrays; microwave integrated circuits; modulation; pulse circuits; signal synthesis; standards;
D O I：
10.1109/19.769579
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We have developed an accurate bipolar voltage source for ac and de metroloy, based on the quantized pulses of Josephson junctions. The output voltage is a factor of 4-6 higher than the amplitude of previous unipolar waveforms; this is achieved by generating bipolar waveforms where arrays of junctions are driven with both a broadband two-level digital code and a sinusoidal frequency, We experimentally demonstrate two bipolar waveforms: a 5 kHz sine wave with +/- 18 mV peak amplitude and quantization noise power eight orders of magnitude below the power in the fundamental frequency, and a 3.5 kHz square wave with +/- 13 mV peak amplitude and even harmonics at -100 dB (carrier).
引用
收藏
页码：266 / 269
页数：4
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