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Fractal antennas for smart clothes

11.03.2017

The popularity of activity monitors and other wearable electronic devices heralds an interest in smart clothing - it is believed that this category of devices will supplant the now familiar bracelets. One of the technical challenges on the way to mass-produced smart clothing is to provide stable wireless communications. The fact is that the proximity of the human body negatively affects the operation of traditional antennas. Especially if the person is moving and sweating.

Fractal antennas for wearable devices, invented by Fractal Antenna Systems, are deprived of this drawback. Fractal antennas, as their name implies, have the property of self-similarity. Such a structure successfully compensates for the influence of factors that tend to change the parameters of the antenna. In addition, it provides operation in a wide range of frequencies. Fractal antennas can be embedded in fabric and flex with it without being seen.

Fractal Antenna Systems has been operating in the designated area for a decade and a half and has a key patent No. 7830319. Several more developments are in the process of patenting. Fractal Antenna Systems says its antennas, already in use by the military, are also of interest to smart clothing developers.

Now, in collaboration with Fractal Antenna Systems, the specialists of these companies are creating custom versions of antennas, which in the future can be found in serial clothing items.

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Individuals of Escarpia laminata cross a border in longevity that no other species of living creatures has ever crossed. And since it is impossible to accurately determine the age for the longest individuals of this species, it is possible that some of them live even longer.

Worms are more suitable for experimentation and study than rare tortoises and giant cetaceans, which were previously considered long-lived record holders. Individuals living in one place all their lives near hydrothermal vents and "black smokers" at the bottom of the sea feed on plankton and the remains of other organisms that are caught from the water. Escarpia laminata tubes grow very slowly - about half a millimeter per year, and the age of the longest individuals exceeds 300 years.

Part of the secret to their longevity is that these worms almost never die - the mortality rate in their colonies does not exceed 0,6% even for the oldest individuals, which is about 15 times lower than the values \uXNUMXb\uXNUMXbpredicted by theory. Perhaps this is due to the low temperature of the waters in which Escarpia laminata and other deep-sea worms live.

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