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L-band antenna supporting ultra-wideband and multi-band networks

08.03.2015

Huawei has introduced the world's first L-band antenna supporting ultra-wideband (UWB) and multi-band. In addition to the main frequencies 700/800/900/1800/2100/2600 MHz, the new antenna operates in the 1500 MHz band.

According to GSMA studies, the L-band (1300-1518 MHz) will be in high demand in the coming years, as it is effective in providing mobile broadband (MBB) services, has high power and wide coverage even inside buildings. The L-band 1452-1492 MHz is in particular demand due to regulatory action, including the recent decision to use the frequency range for mobile broadband in Europe.

Huawei started R&D of L-band antenna back in 2014 and became the first company in the world to launch a multi-band ultra-wideband antenna capable of supporting all major frequencies and L-band. Initially planned for deployment in Europe, this antenna will allow operators to greatly accelerate the deployment of VHF networks.

Zhou Taoyuan, president of Huawei's Antenna Solutions Division, said, "Frequency spectrum is a key aspect in the development of MBB, and L-band will play an important role in this sector in the coming years. Huawei's new antenna is designed to help operators deploy more efficiently MBB network, is an important addition to our line of multi-band ultra-wideband antennas and proof of our leadership in wireless communications technologies."

In 2014, Huawei shipped over 1 million antennas worldwide.

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Researchers from the University of North Texas set up the following experiment: they asked several men and women, regularly, at least twice a week, "pumping muscles", perform 10 squats with heavy weight. Then they were given either water or vodka diluted with water (however, those who drank water believed that they were also given alcohol - a glass of water was specially smeared with alcohol for smell). All participants in the experiment took a muscle biopsy three times: once before strength exercises and twice after - after three hours and after five hours.

In both men and women, exercise activated signal chains associated with the mTOR protein, which controls cell growth. After exercise, mTOR molecules received a stimulating modification and accelerated overall protein synthesis, thereby pushing cells to divide. But if a person drank a portion of alcohol after a squat session, mTOR activated worse, and the signal for cell growth and division turned out to be weak.

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