Tag Archives: smartphone

Download apps at the speed of light!

Fujitsu has developed the world’s first 300 GHz band compact receiver with an internal antenna. It’s capable of high-speed wireless communications at a rate of several tens of gigabits per second — over 100 times faster than current mobile technology. Radio signals with a frequency greater than 100GHz, called the terahertz band, allow for increases in usable frequency range and communication speed of more than 100 times compared with the 0.8-2.0 GHz range used by current mobile devices. Now, Fujitsu has developed technology that combines a receiver-amplifier chip and terahertz-band antenna with a low-loss connection. This has made it possible to reduce the receiver’s size to one tenth that of previous receivers, making use in mobile devices possible.

One of the main hurdles was that existing high-sensitivity terahertz-band receivers consist of a receiver-amplifier module and separate antenna, with a specialized component called a waveguide to connect them, which makes for large receivers. The most effective way to miniaturize them is to build the antenna directly into the receiver-amplifier module and eliminate the waveguide. Modules with built-in antennas are built by connecting the antenna and the receiver-amplifier chip through an internal printed-circuit substrate, making a waveguide unnecessary. The problem then is that the most common materials for printed-circuit substrates for high-frequency waves are ceramic, quartz, or Teflon, but when used in the terahertz band, there is significant signal attenuation and loss of receiving sensitivity.

Why is this  important: Imagine visiting a download kiosk at an event hall, station, bus terminus, shopping mall or theme park and being able to instantly download 4K or HD video straight to your smartphone. Fujitsu envisions “split-second data transfers between mobile devices and split-second backup between mobile devices and servers,” according to Next Big Future.

Fujitsu and Fujitsu Laboratories will begin field trials of multi-gigabit-per-second, high-speed data transfer using this newly developed compact receiver, aiming to commercialize this technology around 2020.

This will dispel  the common frustrations felt from  ‘on the hoof’ downloads from highly expectant video hungry consumers.

These are the topics that interest me; Sign up and join in with what could be!

 

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Steve

Smartphones become Solar Panels

Transparent Batteries That Charge in the Sun Could Replace Smartphone Screens –

A group of smart Japanese techies  have managed to improve the design of a transparent lithium-ion battery so that it’s now able to recharge itself when exposed to sunlight without the need for a separate solar cell.

The transparent battery was first developed by the researchers, led by Kogakuin University president and professor Mitsunobu Sato, back in 2013. The electrolyte used for the battery’s positive electrode is made mostly from lithium iron phosphate, while the electrolytes used for the negative electrode include lithium titanate, and lithium hexafluorophosphate a stronger chemical bond at subatomic level.

Those are all common ingredients used in Li-ion rechargeable batteries, but the thickness of these electrodes are just 80 to 90 nanometers, which allows a lot of light to pass through and makes these batteries almost completely transparent. Imagine that! Where else could this technological discovery be applied.

But by changing the chemical makeup of the negative electrode, the Japanese researchers have found a way to make these transparent batteries now recharge themselves in the presence of sunlight, or other bright sources of illumination, say a lamp or street light.

This is important because future iterations of this battery could become smart mirrors for buildings and vehicles that can auto-dim when it’s bright outside during the heat of the day, but also store power as they’re recharged by the sun. And as an extension of that idea, one day your smartphone’s display might even serve as an additional battery, using sunlight to charge the device whenever you’re outside.

Harvesting energy is becoming more and more portable. Have any ideas to join in the discussion?

Whats the next disruptive vision that will enter the solar market place?

To the next

 

Steve