Digitally controlled edge interpolator (DCEI) for digital to time converters (DTC)
US9137084B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2013 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Aug 2, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/245
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A Digital-to-Time (DTC) for a Digital Polar Transmitter (DPT) comprises a coarse delay/phase segment and a fine delay/phase segment. The coarse delay/phase segment generates an even delay/phase signal and an odd delay/phase signal. The fine/phase delay segment receives the even coarse phase signal and the odd coarse phase signal, and is responsive to a fine delay/phase control signal to generate a fine delay/phase output signal that is an interpolation of the even delay/phase signal and the odd delay/phase signal. In one exemplary embodiment, the fine delay/phase control signal comprises a binary signal having 2N values, and the fine delay/phase segment comprises 2N interpolators. Each interpolator is coupled to the even and odd coarse phase signals and is controlled by the fine delay/phase control signal to be responsive to the even coarse phase signal or the odd coarse phase signal based on a value of the fine delay/phase control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.