Distortion cancellation for dual stage carrier-aggregation (CA) low noise amplifier (LNA) non-linear second order products
US9379673B2 · kind B2 · utility
8Cited by
5References
16Claims
0Family size
Assignee
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Key dates
| Filing date | May 30, 2014 |
| Grant date | Jun 28, 2016 |
| Priority date | — |
| Expiry date | Sep 17, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2201/3215
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A device includes a main two-stage low noise amplifier (LNA) configured to amplify a carrier aggregation (CA) communication signal, the main two-stage LNA comprising a first LNA stage and a second LNA stage, an output of the first LNA stage having a first stage second order intermodulation product, the second LNA stage comprising a phase-inverter configured to phase-invert the output of the first LNA stage to generate a second stage phase-inverted output, and an auxiliary LNA stage coupled to the main two-stage LNA, the auxiliary LNA stage configured to cancel the first stage second order intermodulation product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.