Scintera has developed a unique mixed signal processing architecture combining the flexibility of digital with the simplicity, small size and low power consumption of analog. The first products based on this architecture address wireless power amplifier linearization applications by enabling the complex predistortion signal processing to shift from the digital domain into the more computationally efficient analog RF domain. The resulting system-on-chip (SoC) solution, called the RF power amplifier linearizer (RFPAL), allows customers to drive down the cost, complexity, footprint, and system power consumption of existing designs while simultaneously achieving significantly higher PA efficiency and system reliability.
RFPAL offers standalone RFin / RFout operation that requires neither complex software development nor access to baseband signals. It automatically detects and linearizes signals across a wide range of protocols and operating conditions. As a result, engineers may quickly bring to market linearized PA solutions in any configuration required, while minimizing development and manufacturing costs.
RFPAL is shipping in mass production with significant field deployments and accelerating adoption across many applications and markets.
The Technology section provides an explanation of different linearization techniques, the benefits of predistortion in applications presently dominated by operation in backoff, a comparison between RF predistortion and digital predistortion and an inside look into the RF predistortion architecture and the benefits of RFPAL.
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