Modulation apparatus
US10680863B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 21, 2016 |
| Grant date | Jun 9, 2020 |
| Priority date | — |
| Expiry date | Apr 18, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/583
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Modulation apparatus, comprising: a first delta-sigma modulator for providing a digital in-phase signal based on a modulation of an in-phase component of a baseband signal; a second delta-sigma modulator for providing a digital quadrature signal based on a modulation of a quadrature component of the baseband signal; a first multiplicative combiner for combining a carrier signal with the digital in-phase signal and for providing an in-phase output signal; a second multiplicative combiner for combining the carrier signal with the digital quadrature signal and for providing a quadrature output signal; a delay component for generating a 90° phase shift between the in-phase output signal and the quadrature output signal; and an additive output combiner for combining the in-phase output signal and the quadrature output signal and generating a transmit signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.