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The United States has developed a new generation of miniaturized antenna with a size of less than 1 mm using a new signal transmission and reception method
Source:Origianl | Author:C&T RF Antennas Inc | Publish time: 2018-07-29 | 995 Views | Share:


According to the US, Air Force Research Laboratory reported on October 12, 2017, the United States Air Force Research Laboratory Materials and Manufacturing Division and Northeastern University, using a new signal transceiver method, recently developed a miniature antenna, reduced size 100 times, less than 1 Mm. This result may greatly contribute to the miniaturization of military and commercial communications systems.

 

Over the years, most electronic components have been miniaturized, but the miniaturization of antennas has been hampered. This is because the conventional antenna has a strict and precise metal structure, and the antenna needs to be maintained in a length so as to resonate at an appropriate frequency so that the desired electromagnetic wave can be efficiently transmitted or received. This limits the miniaturization of the antenna.

 American new generation antenna schematics

American new generation antenna schematics

US Air Force Research Laboratory Materials and Manufacturing Department and Northeastern University researchers use the strain wave propagation speed is much slower than the speed of light nature, while maintaining the same frequency, the use of acoustic filter technology, the microwave voltage into Strain waves and reduce the wavelength. Magnetic materials are then used to coat conventional BAW filters because these slower strain waves can be converted into radiation, thus avoiding the inefficiencies that conventional antennas face after miniaturization.

 American new generation antenna schematics-1

The micro-antenna uses a special insulating material of "multiferroic composite material" to replace the conductive material to sense the microwave electric field. This insulating material consists of a magnetostrictive material that converts magnetism into a strain and a piezoelectric material that converts strain into a voltage converting material. This insulating material consists of a magnetostrictive material and a piezoelectric material: a magnetostrictive material converts magnetism into strain and a piezoelectric material converts strain into voltage. The application of multi-iron composite material can make the ultra-small antenna realize the antenna function by inducing the microwave magnetic field.

 

The research team found that the new antenna performs better than traditional antennas of similar size and that they require no power at all and only work with simple electronics. In addition, different geometrical designs control the frequency of thin film resonance. They demonstrated the maturity of this technology by using two different designs that span from UHF to VHF. Including wearable antennas, bio-implantable and bio-injectable antennas, smartphones and wireless communication systems.