If we can generate electricity at ultra frequencies, can we have wireless distribution?
145391
I believe that you have described radio and TV transmission without cables.  If you could supe that up to practical power levels (lightning?) we would all become receivers and turn to toast.  But I do believe that Tesla had plans on how to transmit power through the air and you might want to check that out as he was an electrical genious.
619537
Yes if you have a wireless internet card and are in an area that supports it (such as an internet cafe, office, library, etc.)
570316
10 years- fiber optic?  not yet.  Power cables will be the supply of telecommunications.  the power we currently get runs between 1-60Hz... yet the cables are so wide they can handle well into the Tera-hertz.  Com ed is already experimenting on multiplexing signals to bring voice, TV, and data to... EVERYWHERE!  The power grid encompasses everything and has NO ZONING!  You would travel with a small lightweight access box... plug into the wall... an ethernet cable to the lap top... and voila!  your on YOUR internet and phone account EVERYWHERE you go.  The lines are already laid which means the system is ready to go.  fiber cables still have to be laid all over and run to each and every home and business.\n\n20 years- fiber?  maybe.  its important to remember that there isnt a single technology that utilizes fiber to its full capacity.  how do we know?  because we dont know the maximum bandwidth of fiber cables.\n\n30 years- fiber?  probably.  at this point we should have wireless access everywhere, internet on our wrist watch, and TV streamed directly to our brain by the Motorola/AT&T/Coca-Cola/Chinese Government/ABC-TimeWarner conglomeration.  oh dont forget the TIVO add-on shoe sole insert.
1174457
Everything is going to be wireless soon. UWB will rule the world! \nI think having a wireless keyboard or mouse is needed only if you are sitting in your armchair and have a rather big monitor , otherwise just a gimmick!
834597
No \nThere are no optimal frequencies for a transformer.
770731
Wireless devices for personal usage are not supposed to be powerful enough.  Also, going by the specs, it is not a personal network anyway.\n\nSo, you need clearances from the controlling organization to operate such a network first of all.\n\nSecondly, since you say it must be wireless, I would guess you need some sort of sattelite service.  I do not personally know how costly that would be.\n\nOnce you have frequency usage/transmission clearances and satellite availability, it should not be an issue to support 200 nodes at all.
981986
New frequency bands (K -DBS),\nMore powerful
675481
i would also go the wireless Internet route.  while morally, ethically and maybe illegal in your area, it is easy to do.  most people leave their wireless connection wide open.
697160
http://www.google.com.au/url?sa=t&ct=res&cd=1&url=http%3A%2F%2Fieeexplore.ieee.org%2Fiel4%2F5426%2F14662%2F00666581.pdf%3Farnumber%3D666581&ei=2hZMRfWnBK2EYeampeQD&usg=__PnRESXCJq6-7EE0q58nnzl7mWhY=&sig2=uJlHbV5sannSUEImsbEgUQ
330278
Electricity is a form of energy that can be transmitted efficiently through copper wires because it is a good conductor. To transmit the same electricity through air, you will need very high voltage as air has a high resistance. Additionally, the efficiency will also be reduced as there may be arcing. High voltage is also dangerous.\n\nHowever, when we send a Radio Wave, it is also a form of energy. In the early days of Radio, there is a circuit that is popular with Radio enthusiasts called the Crystal Radio. The Crystal Radio does not need a battery to power it. It uses the Radio Signals itself. With some innovative design, one can tap into the Radio waves and convert that into electrical energy. This is a form of wireless electricity. However, the power level is very low.\n\nSo potentially, it is possible but there are probably many challenges ahead. Today, it is still not viable but we never can tell, technology has always done the impossible.\n\nFor very short range, electricity may be wirelessly  transmitted via induction (magnetic fields). Some pace makers are recharged via induction.
84634
probably there are service providers in your area that can offer you WiFi connections across those 10kms with no complexity.\nIf you are trying to do it by yourself, you will need microwave antenas aligned in a careful way at every point which you want to provide conectivity and repeaters, so wireless users can detect those signals
562675
No.\n\nWe (the USA) have the best technology to do it and we use it to the fullest extent possible.
1163140
not yet. but alternatively u can use radio frequency headfone......... A device (receiver) is attached to laptop which is handy enough and works on battery as well as mains. u have wireless headphone which communicates through receiver and works on battery only (3volts). It can work almost 10-20 metres and behind wall also.
53487
By Lance Ulanoff  \nImagine a world where all your portable devices can be charged and powered simply by placing them on a desktop. Chip manufacturer MobileWise has gone well beyond imagining such a world and this week unveiled "a conductive solution" that it believes can make it all possible.\n\nDuring a mid-day press conference in chilly New York City, MobileWise showed off a handful of functioning prototype powerbases and retrofitted mobile devices that all use the company's new MobileWise chipset and enable "Wire-Free" electric power. One chip, the tiny Adapter Controller, goes inside the mobile device and the other, the Contact Controller, gets built into the power base station. These power bases, which were shown in a wide variety of shapes, sizes and colors, are each covered in an array of gold-plated contacts. The retrofitted mobile devices also have a pair of contracts. With properly configured handheld devices, the bases can, according to company CEO Andy Goren, change any flat surface into a charging/power station.\n\n \n \n \nThe patent-pending technology behind the MobileWise is, on the surface, quite simple. The adapter chip inside the handheld device will, when placed on a base station, receive a very small electrical signal and message from the base controller chip that will power up the adapter chip. The base controller chip will sense for polarity. If there is none (say you place your hand on the base) then it does nothing. If it does find polarity and then a signal from the adapter chip, it will then read information about the voltage level necessary to run the mobile device and begin charging and powering it. Because of the array of contacts—from dozens to hundreds, depending on base size—there's no need to place the device in a special spot or position on the base. In fact, during the demonstration we saw the bases accept multiple devices, charging and powering them all at once.\n\nThe solution is not actually entirely "wire free", however. The base station is plugged into an AC adapter and can deliver up to 30V DC to an individual device. It's also, according to Goren, completely safe, and if any charge were delivered to a person, it would be at the level of a low-voltage battery, virtually imperceptible to humans and certainly not harmful, he added. The final base units will also, he said, be waterproof and protected from electrostatic charges. \n \n \n\n\nDespite calls for MobileWise to manufacture the bases, Goren said the company plans instead on delivering the chipsets to partners who will likely build the adapter chip and proper contacts into their products and OEM the power base manufacturing to another company. MobileWise showed a variety of colors and form factors for the bases.\n\n \n \n \nAcer has already partnered with MobileWise and, according to Goren, may ship a MobileWise-enabled notebook by Q1 of next year. But MobileWise has, it seems, even more intriguing plans on the horizon. The company is already in discussion with a couple of major office furniture manufacturers to build the power array bases and controller chips into furniture. Apparently, these bases are for more than just mobile devices. Properly-equipped televisions, lamps and more could be powered by the bases—Goren even had an HDTV that worked with one of the larger ones. Later next year, MobileWise expects to add data handshake capabilities to the chipset, allowing, once the signal is split, data delivery over the same contacts.\n\nWhile no shipping units currently exist, MobileWise said the adapter chips run roughly $1.25 a piece adding, it said, just a few dollars in manufacturing costs to mobile devices and the base stations could, in units of 100,000 cost roughly $11 to manufacturers. Goren said he expects a mid-sized base (roughly 12 by 18 inches) to sell for $160 street. Not every mobile device will have to be retrofitted, by the way. MobileWise says it expects to see a ha
981769
A wireless router xxxxx
13613
yes you can do that as long as the frequency is 802.11 b or g. almost all new laptops also have built in wireless and should pick up on your router
800644
You mean like a radio station? You can't really, Radio Station's  run their signals  on different frequencies then a wireless router.\n\nYou don't have the hardware to broadcast that high of a frequency not to mention modulate it. Like FM or AM..\n\nYou can do Internet raido..