High-linearity RFIC receiver front-end

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Universal wireless connectivity is enabling an internet of things (IoT) to realize automated communication between many devices. However, numerous wireless frequency bands must be supported in order to implement connectivity world-wide. BlackBerry's ability to support different bands in their current radio receiver designs is limited primarily by the requirement for dedicated front-end filters, which are used to reject out-of-band signals. The problem is exacerbated for IoT devices which must be physically small and inexpensive. The work proposed in this Engage project is expected to resolve these limitations and enable IoT devices with universal connectivity. The proposed designs are based on passive switching mixers, which are known for their high linearity. These mixers also work as tunable filters when combined with reactive elements. Tunable backend filtering helps to reject unwanted blockers and decrease the performance required from dedicated front-end filters. High-linearity wideband RF amplifiers (front- and back-end) and baseband/IF filtering concepts aimed at reducing the cost and complexity of a complete radio receiver for IoT applications will also be investigated.