Generator structures and methods that provide low-harmonic curvilinear waveforms
AssigneeAnalog Devices, Inc.
InventorLawrence C. Streit
Life of this patent
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Abstract
Simple, inexpensive waveform generators and methods are provided that generate curvilinear waveforms which comprise a fundamental sinusoid and harmonics that are either absent or are significantly reduced from the fundamental. In an exemplary method, a generator converts a first straight-line waveform into a level-shifted, frequency-doubled second straight-line waveform, multiplies the straight-line segments of the first and second waveforms to provide a first curvilinear waveform, and sums this curvilinear waveform with a scaled version of the first straight-line waveform to realize a second curvilinear waveform with further-reduced harmonics.
Claims46
A method of generating curvilinear waveforms that each comprise a fundamental sinusoid and harmonics that are substantially reduced from said sinusoid, said method comprising the steps of:
- providing first and second triangle waveforms that respectively comprise first and second straight-line segments;
- and
- multiplying said first straight-line segments and said second straight-line segments of said first and second triangle waveforms to thereby generate a first curvilinear waveform.
A program storage device having instructions, readable and executable by a processor, that define a method for generating curvilinear waveforms which each comprise a fundamental sinusoid and harmonics that are substantially reduced from said sinusoid, said method comprising the steps of:
- providing first and second triangle waveforms that respectively comprise first and second straight-line segments;
- and
- multiplying said first straight-line segments and said second straight-line segments of said first and second triangle waveforms to thereby generate a first curvilinear waveform.
A waveform generator that generates curvilinear waveforms which each comprise a fundamental sinusoid and harmonics that are substantially reduced from said sinusoid, said system comprising:
- a multiplier that multiplies first straight-line segments of a first triangle waveform and second straight-line segments of a second triangle waveform to thereby generate a first curvilinear waveform.
Dependencies are inferred from the claim text.