Patent · US Active

Method of determining gain and phase margins and analyzing stability of nonlinear RF circuit

US10401406B1 · kind B1 · utility

0Cited by
3References
17Claims
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Key dates

Filing dateAug 23, 2013
Grant dateSep 3, 2019
Priority date—
Expiry dateDec 5, 2036

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG06F2119/10
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A method executable by a computer processor is provided for determining stability of non-linear radio frequency (RF) circuit. The method includes identifying key devices of the RF circuit which open feedback loops when turned off; defining a generalized Bode's return ratio matrix with respect to the key devices over a range of small signal frequencies at a large signal operating point; determining stability margins for gain and phase of the RF circuit based on eigenvalues of the Bode's return ratio matrix; and determining overall stability of RF circuit using the Nyquist locus of a normalized determinant function based on the determinant of the generalized Bode's return ratio matrix.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.