Tile-based multiprocessor architecture

An accelerating trend for today s cell phones is to support multi-mode, multi-standard, and multi-band operations, which require even more complex RF front-end circuits. Meanwhile, the communication-oriented cell phone standards are converging with wireless broadband access standards WiFi1 61 and WiMax (806.16d/e)1171. Wireless terminals are expected to be able to deliver computing, computation, and entertainment functionalities virtually anytime, anywhere. As a result, a large variety of heterogeneous functionalities could be found on the 

Inability to Build High Quality Passive Components The quality of on-chip 

Process Incompatibility While digital CMOS technology will continue be the carrier of logic circuitry, RF CMOS is only proper for low-end applications with relatively low sensitivity requirements1221. One major limitation of the CMOS process is the difficulty of isolation due to the relatively low resistivity of CMOS substrate, which is subject to excessively conductive loss from the standard of RF applications. On the other hand, a SiGe BiCMOS process has proven to be a very competitive candidate technology for RF components due to its superb RF 

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