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khouly is right.the vdd depends on your technology, you apply it in your design. 1.8v is conventional for tsmc1801p6m (.18micron technology).the nf for whole of the front end is approximately less then 13db, that in the case of lna it is less than 3db commonly.power consumption for zigbee applications has to be low.but there is wide range for the power consumption in papers.from afew hundereds micro watt to a few milli watt.the ip3 and p1db are in this manner. their variations range is proportionally broad and we can not specify some fixed values for them.