Thank you Phil, I wonder what is exactly the operations make the reception to be very power hungry. It is just the demodulator?, I thought it is the same circuitry for modulation and demodulations, as also the frequency synthesizer. Additionally TX usually consumes more due to the need of amplification, is the amplification RX higher than TX. Thanks, regards, Joan
-----Mensaje original----- De: Philip Levis [mailto:[EMAIL PROTECTED] Enviado el: dom 13/05/2007 21:38 Para: Joan Cortes CC: [email protected] Asunto: Re: [Tinyos-help] CC2420 higher RX consumption than TX On May 13, 2007, at 12:42 PM, Joan Cortes wrote: > Hello, > > Anyone knows the reasons that make the transceiver CC2420 to > consume more current receiving than transmitting. > > Thanks, Circuitry. In low-power radio chips, less than 2% of the energy consumed goes into RF. Most of it is the electronics. It's often simpler (electronics-wise) to modulate a signal than it is to demodulate it. For the CC2420, that's the case, so the RX draw is higher. Phil
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