RadioDoc58ef2c0Premium,ExMod 2000-03
join:2000-05-11
1 edit | Clarification "Two watts of power over ten meters" implies the device transmits two watts of power. This is incorrect. It uses two watts of power and transmits over 10 meters. That's 2000 mAH and would be a huge drain in devices like cell phones.
These components will enable things like thumb drives to transfer data without being physically connected to the source or destination, which is an interesting application. It's also after the "wireless" (literally) home theater installation where everything is connected via short-haul radio signals. Mostly, it's a replacement in Bluetooth-type applications.
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| said by RadioDoc:It uses two watts of power and transmits over 10 meters. That's 2000 mAH and would be a huge drain in devices like cell phones. How did you get to the 2000mAh value??? Fuzzy math??? 
Energy=Watts*Time=Volts*Amps*Time |
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RadioDoc58ef2c0Premium,ExMod 2000-03
join:2000-05-11
1 edit | said by cowboyro:said by RadioDoc:It uses two watts of power and transmits over 10 meters. That's 2000 mAH and would be a huge drain in devices like cell phones. How did you get to the 2000mAh value??? Fuzzy math??? Energy=Watts*Time=Volts*Amps*Time Let's see now...most of these devices run at 1-3 volts and two watts would require 2000 mAh at one volt for one hour. If you wish, we can assume three volts and a little less than 700 milliamp-hours. Either way it's a huge power drain in a battery-operated device, which is usually expected to run far longer than an hour on charge.
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 wifi4milezBig Russ, 1918 to 2008. Rest in Peace
join:2004-08-07
New York, NY | reply to RadioDoc
said by RadioDoc:"Two watts of power over ten meters" implies the device transmits two watts of power. This is incorrect. It uses two watts of power and transmits over 10 meters. That's 2000 mAH and would be a huge drain in devices like cell phones. These components will enable things like thumb drives to transfer data without being physically connected to the source or destination, which is an interesting application. It's also after the "wireless" (literally) home theater installation where everything is connected via short-haul radio signals. Mostly, it's a replacement in Bluetooth-type applications. I was thinking the same thing. This device will absolutely kill the battery of any cell phone its used in. Running AIM on your Blackberry alone will cut your battery life in half, I can only imagine what this chip would do! Still not a bad idea, but probably meant more for home appliances and PC's that have robust batteries or power supplies.
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RadioDoc58ef2c0Premium,ExMod 2000-03
join:2000-05-11 | It's a great technology for avoiding connecting cables between AC-Powered devices or those which only see occasional use like thumb drive-type portable storage, but putting this in a cell phone as the linked article suggests is absurd.
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| said by RadioDoc:It's a great technology for avoiding connecting cables between AC-Powered devices or those which only see occasional use like thumb drive-type portable storage, but putting this in a cell phone as the linked article suggests is absurd. Plus, at 60 GHz, I don't think it'll play well with solid objects. |
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RadioDoc58ef2c0Premium,ExMod 2000-03
join:2000-05-11 | It plays just fine. Ping pong.
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Lets also keep in mind that that may be the maximum power consumption for that transfer rate. No phone processor can handle data rates of 5Gbps let alone PCs. I also don't think you're phone would need to go through with the full 10 meters. That's a LONG distance for transferring something from your phone to a device at your house or work place.
Instead, this is probably for enabling of wireless HDMI or the like at full bandwidth. For a phone though or other mobile device as far as power goes you're looking at shorter ranges and less bandwidth requirements. Because of that power consumption can probably fall within the range of Bluetooth or WiFi at a much higher data rate.
Note too that that data rate more than likely reflects raw bits per second through the transceiver and doesn't take into consideration any protocol overhead including things like error checking, headers, etc..
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 TransmasterDon't Blame Me I Voted For Bill and Opus
join:2001-06-20
Cheyenne, WY | reply to RadioDoc
2 watts output at 60gHz would be down right dangerous. 
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RadioDoc58ef2c0Premium,ExMod 2000-03
join:2000-05-11 | Yeah I thought that too...especially on a cell phone.
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| reply to RadioDoc
actually you don't have to go that far in terms of mAH, plus you make an assumption on what voltages are used. i'd just look at how many joules the battery stores. my guess most cell phone batteries store less than 10 joules (mine only stores ~3.5 joules). just comparing 3.5 joules to 2 watts of consumption give ~1.75 seconds of usages assuming no losses anywhere and everything is ideal.
no matter how you look at it, this chip can only be used to short busrts of time, but at 5gbps, a very small amount of time translates into a large amount of data. |
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