Agilent Technologies, Inc.

Daniel B Gunyan

Loren C Betts

David E Root

Jason M Horn

Jonathan B Scott

Jianjun Xu

A method for determining input tones required to produce a desired output includes the step of extracting a linearization of a spectral map representing a device under test (DUT) that i) is under drive of a large signal having one or more fundamental frequencies with associated amplitudes and phases, and ii) produces an approximation of a desired output having at least one unwanted spectral component. The method includes the further step of using an inverse of the extracted linearization to determine the input tones required to produce the desired output under a given load condition.

Method and apparatus for determining a response of a DUT to a desired large signal, and for determining input tones required to produce a desired output

A broadband balanced frequency converter ('BBFC') in signal communication with a frequency source is disclosed. The BBFC may include a mixer and an active balancing element in signal communication with the mixer.

Broadband balanced frequency converter

A method for eliminating the systematic measurement errors from a measurement system, for example a vector network analyzer, such that an accurate representation of the behavior of a nonlinear device can be measured or characterized. The cross-frequency phase and absolute amplitude of the measured voltage waves applied to and emanating from the nonlinear device are measured and error corrected. These waves may be used for nonlinear device characterization or modeling.

Nonlinear measurement system error correction

The invention measures the X-parameters (or large-signal S and T scattering functions, sometimes called linearized scattering functions, which are the correct way to define 'large-signal S-parameters') with only two distinct phases for small-signals on a frequency grid established by intermodulation frequencies and harmonics of the large-tones, with guaranteed well-conditioned data from which the X-parameter functions can be solved explicitly, without the need for regression, and not limited by performance limits of the reference generator or phase-noise.

Large signal scattering functions from orthogonal phase measurements

A split signal pulse generator ('SSPG') that generates a difference signal from two split signals from a splitter module, where one of the split signals may be time delayed by a delay module, where the delay module may be a transmission line having a time delay or an adjustable delay line. The SSPG may include an input amplifier configured to shape an input signal received by the splitter module. A method of generating a difference signal is also provided.

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Santa Rosa, CA, United States of America

Daniel B Gunyan