نتایج جستجو برای: small antennas
تعداد نتایج: 800395 فیلتر نتایج به سال:
www.MaterialsViews.com C O M Stretchable Microfl uidic Radiofrequency Antennas M U N I By Masahiro Kubo , Xiaofeng Li , Choongik Kim , Michinao Hashimoto , Benjamin J. Wiley , Donhee Ham , and George M. Whitesides * C A IO N This paper describes a new method for fabricating stretchable radiofrequency antennas. The antennas consist of liquid metal (eutectic gallium indium alloy, EGaIn [ 1 , 2 ] ...
Background and Objectives: with the developments of technology, contact with various frequencies of electromagnetic fields ( EMF ) has significantly increased, while the abundant benefits of using microwaves in routine life cannot be neglected. During recent years there have been reports of adverse effects caused by contact with electric and magnetic fields of these waves that spread from BTS a...
Experimental data are presented on the viability of multiple antennas on small mobile handsets, based on extensive measurement campaigns at 2.14GHz with multiple base stations, indoors, from outdoor to indoor, and outdoors. The results show medium to low correlation values between antenna branch signals despite small antenna separations down to 0.16λ. Amplitude distributions are mainly Rayleigh...
In this study the effects of using defected ground structures (DGS) composed a complementary split ring resonator (CSRR) and CSRR with dumbbell (CSRR-D) for rectangular microstrip antennas are investigated. On aim, two different antennas, which Antenna B having etched DGS C CSRR-D designed fabricated in comparison ordinary patch antenna, is A. both Antennas C, same position planes. other hand, ...
Many attributes of metamaterials have led to the consideration of engineering metamaterialinspired structures for a variety of applications. This includes the miniaturization of resonators and their use for improving the performance characteristics of electrically small antennas from the microwave region up through to the optical region. Achieving higher directivity from electrically small ante...
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