A new record for wireless data transmission. Free Technical Library News

NEWS OF SCIENCE AND TECHNOLOGY, NOVELTY IN ELECTRONICS
Free technical library / timeline

New wireless data record

28.05.2016

A team of researchers from the University of Stuttgart and the Fraunhofer Institute for Integrated Circuits set a record by transmitting data over a distance of 37 km at a speed of 6 Gbps. This is 10 times faster than modern equipment.

The data was transmitted between two antennas, the first of which was in Cologne, the second - in Wachtberg, located at a specified distance from Cologne. In Cologne, the antenna was installed on a 45-storey building, and in the second city - on the dome of the observatory.

This record speed was achieved using highly efficient transmitters and receivers in the 71-76 GHz band, intended for terrestrial and satellite broadcasting. The problem of signal attenuation during the passage of such a large distance was solved by using monolithically integrated millimeter wave circuits.

These circuits are based on gallium nitride transistors developed by the Fraunhofer Institute for Integrated Circuits. Thanks to them, the signal was amplified to a relatively high power of 1 watt. In addition, a highly directional parabolic antenna was used to transmit the signal.

Finally, the receiving antenna was connected to a low self-interference amplifier based on high-performance transistors with indium-gallium-arsenic semiconductor layers for high electron mobility. Such an amplifier made it possible to receive a weakened signal that had traveled such a long distance.

<< Back: The world's first quantum communications satellite 28.05.2016

>> Forward: Edible cheese capacitors and energy 27.05.2016

Latest news of science and technology, new electronics:

The existence of an entropy rule for quantum entanglement has been proven 09.05.2024

Quantum mechanics continues to amaze us with its mysterious phenomena and unexpected discoveries. Recently, Bartosz Regula from the RIKEN Center for Quantum Computing and Ludovico Lamy from the University of Amsterdam presented a new discovery that concerns quantum entanglement and its relation to entropy. Quantum entanglement plays an important role in modern quantum information science and technology. However, the complexity of its structure makes understanding and managing it challenging. Regulus and Lamy's discovery shows that quantum entanglement follows an entropy rule similar to that for classical systems. This discovery opens new perspectives in the field of quantum information science and technology, deepening our understanding of quantum entanglement and its connection to thermodynamics. The results of the study indicate the possibility of reversibility of entanglement transformations, which could greatly simplify their use in various quantum technologies. Opening a new rule ... >>

Mini air conditioner Sony Reon Pocket 5 09.05.2024

Summer is a time for relaxation and travel, but often the heat can turn this time into an unbearable torment. Meet a new product from Sony - the Reon Pocket 5 mini-air conditioner, which promises to make summer more comfortable for its users. Sony has introduced a unique device - the Reon Pocket 5 mini-conditioner, which provides body cooling on hot days. With it, users can enjoy coolness anytime, anywhere by simply wearing it around their neck. This mini air conditioner is equipped with automatic adjustment of operating modes, as well as temperature and humidity sensors. Thanks to innovative technologies, Reon Pocket 5 adjusts its operation depending on the user's activity and environmental conditions. Users can easily adjust the temperature using a dedicated mobile app connected via Bluetooth. Additionally, specially designed T-shirts and shorts are available for convenience, to which a mini air conditioner can be attached. The device can oh ... >>

Energy from space for Starship 08.05.2024

Producing solar energy in space is becoming more feasible with the advent of new technologies and the development of space programs. The head of the startup Virtus Solis shared his vision of using SpaceX's Starship to create orbital power plants capable of powering the Earth. Startup Virtus Solis has unveiled an ambitious project to create orbital power plants using SpaceX's Starship. This idea could significantly change the field of solar energy production, making it more accessible and cheaper. The core of the startup's plan is to reduce the cost of launching satellites into space using Starship. This technological breakthrough is expected to make solar energy production in space more competitive with traditional energy sources. Virtual Solis plans to build large photovoltaic panels in orbit, using Starship to deliver the necessary equipment. However, one of the key challenges ... >>

New method for creating powerful batteries 08.05.2024

With the development of technology and the expanding use of electronics, the issue of creating efficient and safe energy sources is becoming increasingly urgent. Researchers at the University of Queensland have unveiled a new approach to creating high-power zinc-based batteries that could change the landscape of the energy industry. One of the main problems with traditional water-based rechargeable batteries was their low voltage, which limited their use in modern devices. But thanks to a new method developed by scientists, this drawback has been successfully overcome. As part of their research, scientists turned to a special organic compound - catechol. It turned out to be an important component that can improve battery stability and increase its efficiency. This approach has led to a significant increase in the voltage of zinc-ion batteries, making them more competitive. According to scientists, such batteries have several advantages. They have b ... >>

Alcohol content of warm beer 07.05.2024

Beer, as one of the most common alcoholic drinks, has its own unique taste, which can change depending on the temperature of consumption. A new study by an international team of scientists has found that beer temperature has a significant impact on the perception of alcoholic taste. The study, led by materials scientist Lei Jiang, found that at different temperatures, ethanol and water molecules form different types of clusters, which affects the perception of alcoholic taste. At low temperatures, more pyramid-like clusters form, which reduces the pungency of the "ethanol" taste and makes the drink taste less alcoholic. On the contrary, as the temperature increases, the clusters become more chain-like, resulting in a more pronounced alcoholic taste. This explains why the taste of some alcoholic drinks, such as baijiu, can change depending on temperature. The data obtained opens up new prospects for beverage manufacturers, ... >>

Random news from the Archive

An ultra-strong form of silver has been created 12.10.2019

When it comes to the properties of various metals, there is always a compromise between their strength and electrical conductivity. However, this may change with the advent of a new class of materials, such as a form of silver recently created by one of the research teams. Using lattice defects to their advantage, scientists at the University of Vermont have preserved the metal's conductivity, giving it a strength so high that it even exceeds the theoretical limit, which was considered unshakable for several decades.

Crystal lattice defects are an "evil" that inevitably arises in the production process. In some cases, these defects cause the vulnerability of metals to various negative factors and reduce their durability. Combining multiple metals into alloys overcomes some of the problems, but typically suffers from the electrical and thermal conductivity of the final material.

The strength of silver was given by a very small amount of copper introduced into this noble metal. As a result, the strength of silver has increased by as much as 42 percent compared to the strongest form of this metal previously obtained. But at the same time, the electrical conductivity of silver was practically not affected, and the most interesting thing is that the strength exceeds the so-called Hall-Petch limit.

The Hall-Petch ratio has been one of the main parameters used in materials science for over 70 years. According to him, with a decrease in the size of the crystal grains of the structure, the strength of the metal increases. But there is a certain limit (several nanometers), after which the grain boundaries become unstable and the strength of the metal decreases again.

The researchers managed to get around this limit by creating what they termed a "nanocrystalline-nano-twisted form of metal". Since copper atoms are much smaller than silver atoms, they usually accumulate in the regions of the boundaries of silver crystalline grains. This prevents the defects from moving, an effect that is responsible for the repeated reduction in the strength of the metal. And at the same time, copper atoms do not interfere with the movement of electrons, maintaining a high value of electrical conductivity.

Scientists argue that a similar trick can be successfully used in relation to other metals. This, in turn, can be used to create stronger materials that will be used to build new aircraft, spacecraft, nuclear reactors, solar panels and much more.

See full Archive of science and technology news, new electronics

All languages of this page

Home page | Library | Articles | Website map | Site Reviews