Researchers have developed an antenna based onsalt water, which allows you to effectively control the formation of rays in the right directions and has unique advantages over metal.
The ability to focus the energy of the radio signal ona specific receiver means increasing the range and transmission efficiency, but if its location is unclear, it moves, or if you need to switch to another object, then everything becomes more complicated. In this case, engineers often resort to the beam-forming method, which Allows you to adjust the phase of the waves and adjust the focus without turning the device.
A team of engineers from Nanjing UniversityAeronautics and Astronautics introduced an advanced antenna based on plastic and sea water. The design consists of a round grounded plane and thirteen transparent acrylic tubes, which, if necessary, can be filled with sea water or completely emptied.
Central rod through a copper disc in itbase, sends a signal 360 degrees, and the surrounding 12 cylinders in the filled state serve as reflectors, suppressing transmission in their direction. The antenna operates in the range from 334 MHz to 488 MHz.
The advantage of this technology over metalanalogues, is that by adjusting the water level using micropumps, you can dynamically control the activation status. In addition, in the off state, the device cannot be detected using the radar.
According to the developers, water-based antennas can simplify the construction of 5G networks, the Internet of things and be used in marine equipment.
Earlier, we also reported on the development of a new data stream converter for 6G networks, which will provide a transmission speed of more than 100 Gb / s