[资料]低能耗射频收发器设计(博士论文PDF下载)

[post]The average consumer has relied upon bidirectional RF communication for phone andinternet connectivity for years. These devices are either plugged in to wall outlets orrely on large batteries that must be recharged frequently. A new generation of deeplyembedded, short-range wireless applications is emerging, fueled by the extremereductions in cost and power required for sensing and computation afforded by CMOSand MEMS process advancement. The power consumption of wireless communicationlinks, on the other hand, has not scaled down so dramatically. Short range wirelessprotocols, such as Bluetooth and 802.15.4, have been developed to meet thecommunication needs of these applications and have already seen substantialcommercial success. However, the excessive energy requirements of currentcommercially available radios, even those aimed at short range WPAN applications,limit the scope and inhibit the growth of the deeply embedded wireless market. Asubstantial reduction in energy consumption of short-range RF transceivers is necessaryto make future pervasive computing applications feasible.

In this work, the energetic requirements of RF wireless communication are evaluatedfrom both purely theoretical and practical standpoints, revealing a large gap inpractically achievable energy efficiency and what is offered in today’s commercialmarket. In the context of minimizing energy per transferred data bit, each level of thephysical design of wireless systems will be discussed – from choice of modulationscheme and bandwidth, down to transceiver architectures and low-level circuit designs.Finally, the implementation and measurement results from a 2.4GHz CMOS RFtransceiver prototype are presented. Benefiting from energy conscious high-level systemdecisions and novel circuit architectures, the transceiver achieves ..

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