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This talk will introduce the challenges of standalone FEM designs for demanding wireless systems. It walks the audience through some of the capabilities of the SoC engine and the associated algorithms that can be utilized to design a smart-FEM that is both efficient and cost-effective while still maintaining the overall system performance. It introduces the concept of a smart-FEM in which it is designed as part of the transceiver itself and works within its capability for a most optimum overall system performance.
Some conclusions and recommendations will be offered at the end of the talk. Modern cellular and connectivity RF transceivers require extremely demanding in-band and out-of- band spectral-purity. This is dictated by increasingly complex modulation schemes meant to improve overall system efficiency. For example, the new WiFi7 standard offers 320 MHz channels with up to 4096 QAM modulations, and with dual-band multiple special-streams that can be as many as 16 per band. Achieving high- performance for such a system, for example EVM <-43dB, using circuit techniques alone can result in extremely inefficient font-end modules (FEMs). Furthermore, these standalone FEMs are required to maintain a near-perfect performance under wide range of VSWR and temperatures. The result of such an approach is that the thermal limits dictate the eventual transmitter duty-cycle, thus, reducing the overall data throughput despite the use of a complex, but efficient, modulation scheme. On the other hand, the RF transceiver backed by a massive digital engine in an SoC can be leveraged to improve the overall system performance and efficiency relieving such constraints.
This talk will introduce the challenges of standalone FEM designs for demanding wireless systems. It walks the audience through some of the capabilities of the SoC engine and the associated algorithms that can be utilized to design a smart-FEM.
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