Efficiency of metasurface antennas
WebFeb 21, 2024 · Metasurface is an advanced flat optical component that can flexibly manipulate the electromagnetic wave in an ultrathin dimension. However, electromagnetic coupling among neighbored optical elements decreases the diffractive efficiency and increases the noise. WebApr 13, 2024 · The efficiency of the cloaked coupled case is almost the same as that of the isolated case, which indicates that the interference arising from neighboring BPMA2s or CPMA2s is fully decoupled. ... The metasurface-cloaked antenna was extended to planar types of antennas, i.e., cloaked planar monopole antennas (CPMAs). Detailed …
Efficiency of metasurface antennas
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WebMar 3, 2024 · A total aperture efficiency as high as 61.2% is realized by comprehensively considering TA and RA operations. The design strategy and the well-performed TRA may find promising applications in wireless and satellite communication systems with bidirectional communication scenarios. WebApr 12, 2024 · Beam-scanning antennas are employed in a wide range of applications, such as in satellite communications and 5G networks. Current commercial solutions rely mostly on electronically reconfigurable phased arrays, which require complex feeding networks and are affected by high losses, high costs, and are often power-hungry. In this …
WebFeb 15, 2024 · Different types of efficiencies are introduced for metasurface (MTS) antennas based on single point-source excitation: 1) the feed efficiency ε feed is the power delivered by the feed to... WebThis paper presents two designs of high-efficiency polarizer reflectarray antennas able to generate a collimated beam in dual-circular polarization using a linearly polarized feed, with application to high-gain antennas for data transmission links from a Cubesat. First, an 18 cm × 18 cm polarizer reflectarray operating in the 17.2–22.7 GHz band has been …
http://www.kymetacorp.com/wp-content/uploads/2024/08/Metamaterials_2016_Stevenson.pdf WebOct 28, 2024 · In this document, a 1-bit transmissive programable metasurface with high efficiency is proposed for the cost-effective beam-steering phased array. The designed transmissive metasurface is made …
WebThe capacitive grid of the metasurface is formed by a row of Instead, we apply phase modulations as illustrated in Figure 2a. metallic patches with width w = 27.2 mm and period The metasurface is considered as a virtual array of antennas p = 30 mm, whereas the inductive grid consists of mesh strips closely spaced.
WebFeb 28, 2024 · Following the methodology reported in 37, we extracted the equivalent RLC model of the metasurface together with the mutual coupling coefficient with the active RF coil. The obtained values are:... breathesimpleWebFeb 28, 2024 · In Optical Materials Express, researchers report that lab tests of a new metasurface-based antenna that can harvest 100 microwatts of power, enough to power simple devices, from low power radio waves. This represents an important step toward making it practical to harvest energy from radio waves, such as the ones used in cell … cotswold hotel and golf clubWebJan 13, 2016 · A metasurface antenna measuring 1.2λ × 1.2λ and designed to operate at 3 GHz achieved a gain of 12 dBi. A prototype was fabricated and tested showing good agreement between numerical... breathe sim reviewWebFig. 1. Top view and cross section showing the metasurface, feed structure, and the antenna beam produced from the holographic diffraction of the guided feed wave against the metasurface. Figure 1 shows that the scattering elements in the metasurface radiate with a periodicity that corresponds to the scan angle of the beam. breathe silver partnerWebMar 6, 2024 · To make the energy-harvesting antenna, the researchers used a metamaterial designed for high absorption of radio waves and that allows a higher voltage to flow across the device’s diode. This improved its efficiency at turning radio waves into power, particularly at low intensity. Testing with ambient power levels breathe significatoWebJan 21, 2016 · Still today, many applications, such as automotive radars and satellite communication, strive for simple and efficient low-profile antennas producing the … cotswold hotel and spa golfWebMar 2, 2024 · As examples, one- and two-dimensional metasurface-based array antennas are elaborately designed and fabricated, in which good radiation performance and broadband low RCSs are achieved simultaneously. Both numerical simulations and experimental results verify the effectiveness of the proposed method. cotswold hotel and spa