System and method for designing and using analog circuits operating in the modulation domain
US6765519B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 23, 2002 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Dec 23, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06G7/16
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computation circuit operates in the modulation domain to generate a signal having phase modulation proportional to the ratio of the dividend (numerator) signal to the divisor (denominator) signal. The phase modulated signal may be demodulated by a phase demodulator to produce a baseband quotient signal. The divisor signal maintains inverse proportional control of the modulation gain of the modulator by varying the carrier injection level, resulting in higher bandwidth and accuracy, and lower drift and offset compared to traditional analog computation techniques. The circuit may contain all linear components, even though the division function is a non-linear function. The circuit and method operate when the input signals are analog or both are in the modulation domain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.