Analog and audio mixed-signal front end for 4G/LTE cellular system-on-chip
US9413375B2 · kind B2 · utility
1Cited by
2References
20Claims
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Key dates
| Filing date | Dec 30, 2014 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Dec 30, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/0202
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A CMOS analog and audio front-end circuit includes an enhanced analog-to-digital converter (ADC) that achieves a desired signal-to-noise-and-distortion (SNDR) and an analog-front-end transmit (TX) digital-to-analog converter (DAC). The enhanced ADC includes an improved single Op-Amp resonator coupled to a feed-forward loop and can substantially reduce signal transfer function (STF) peaking of the enhanced ADC. The CMOS analog and audio front-end circuit is integrated with a baseband processor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.