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Low harmonic distortion in a Josephson arbitrary waveform synthesizer (2000)

Benz, S. P. ; Burroughs, C. J. ; Dresselhaus, P. D.

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 77 (2000), S. 1014-1016

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ISSN: 1077-3118

Source: AIP Digital Archive

Topics: Physics

Notes: The use of broadband integrated filters has enabled practical operating margins for ac waveforms synthesized from the perfectly quantized voltage pulses of Josephson junction arrays. This improvement enabled the digital synthesis of arbitrary waveforms with low harmonic distortion; the second and higher harmonics are all at least 94 dB below the fundamental [−94 dBc (carrier)]. This is a 47 dB lower distortion compared to that of the same sine wave synthesized by the semiconductor-based code generator which drives the array. We present operating margins for synthesized dc voltages and demonstrate synthesized waveforms with multiple tones at kilohertz and megahertz frequencies with harmonic distortion and intermodulation products below −80 dBc.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.1288597

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