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krisi
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re: Qualcomm, Renault team on wireless electric vehicle charging
krisi   7/24/2012 8:00:34 PM
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No, it has to be less efficient...wireless radiates in many directions (even if you use resonance like in this case), you have to be a right place with teh reight surrounding for an optimum energy transfer...it is more effcient with wrires for sure, the only question is by how much...Kris

eewiz
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re: Qualcomm, Renault team on wireless electric vehicle charging
eewiz   7/24/2012 6:42:52 PM
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I dont even have wireless chargin in my phone now. Why dont they first do it for phone and then think about the EV hybrids? BTW like Kris, I am bit skeptical about the conversion efficiency.

Peter Clarke
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re: Qualcomm, Renault team on wireless electric vehicle charging
Peter Clarke   7/24/2012 6:27:49 PM
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Qualcomm does not provide much engineering detail but seems to indicate that wireless charging can be much the same as conductive charging but with the benefit of not having to connect up the car.

krisi
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re: Qualcomm, Renault team on wireless electric vehicle charging
krisi   7/24/2012 5:43:43 PM
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Thank you Mark for pointing this out, here is the link for others to enjoy: http://www.aesopinstitute.org/moving-beyond-oil.html I need to point out the obvious though: the energy used for charging wirelessly those EV cars will have to come from somewhere! so saying "moving beyond oil, fossil and radioactive fuels" is a bit premature to say at least...Kris

Mark Goldes
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re: Qualcomm, Renault team on wireless electric vehicle charging
Mark Goldes   7/24/2012 5:08:46 PM
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See Moving Beyond Oil on the Aesop Institute website for a 5 minute electric car charging system under development at Hydro Quebec. Combine these technologies and we will have a whole new ball game!

krisi
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re: Qualcomm, Renault team on wireless electric vehicle charging
krisi   7/24/2012 3:30:17 PM
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Interesting idea of wireless charging...how efficient that charging is though? how long would it take to charge a battery?...and if you sit in car do you get to be charged too? ;-)...Kris

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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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