نتایج جستجو برای: two polarization antenna
تعداد نتایج: 2523054 فیلتر نتایج به سال:
A planar dual-polarized phased array is proposed for 5G cellular communications. The has the properties of dual-polarization, wideband, and quasi-endfire radiation, which printed on one side a single-layer substrate. design contains two eight-element subarrays including horizontally polarized endfire dipole antennas vertically periodic slot antennas, employed PCB ground plane mobile platform. B...
Abstract—A broadband dual-feed dual-polarized microstrip antenna with low cross polarization and high isolation is presented. The dualorthogonal linearly polarized mode is excited by two different feed mechanisms from a single circular radiating patch. One of the two modes is excited by a pair of L-shaped probes with a 180◦ phase differences, and the other is excited by an H-shaped aperture. Th...
Wideband Phased Array Antennas and Compact Harmonic-Suppressed Microstrip Filters. (December 2006) Wen-Hua Tu, B.S., National Chiao Tung University; M.S., National Taiwan University Chair of Advisory Committee: Dr. Kai Chang Modern satellite, wireless communications, and radar systems often demand wideband performance for multi-channel and multi-function operations. Among these applications, ph...
Polarization control using single plasmonic nanoantennas is of interest for subwavelength optical components in nano-optical circuits and metasurfaces. Here, we investigate the role of two mechanisms for polarization conversion by plasmonic antennas: Structural asymmetry and plasmon hybridization through strong coupling. As a model system we investigate L-shaped antennas consisting of two ortho...
Radiator arrays with Dynamic Polarization Control (DPC) and 2D beam steering enable polarization matching to the receiver antenna regardless of its polarization, orientation, and location. A fully integrated 122.9 GHz 2x2 DPC multi-port driven phased array radiates all linear polarizations (0°-180° polarization angles) with axial ratios above 14 dB, and controls the axial ratio from 1.2 dB (cir...
w w w . i j e c t . o r g InternatIonal Journal of electronIcs & communIcatIon technology 77 Abstract A novel compact circular-polarization (CP) operation of a pair of truncated corners square microstrip antenna with two slits and four slits on the ground plane is proposed and investigated. The proposed compact CP design can have an operating frequency reduction of about 21.95% as compared to t...
In this paper, we present a low complexity approach to receive antenna selection for capacity maximization, based on the theory of convex optimization. By relaxing the antenna selection variables from discrete to continuous, we arrive at a convex optimization problem. We show via extensive Monte-Carlo simulations that the proposed algorithm provides performance very close to that of optimal sel...
A printed circular open-loop antenna is introduced as a simple structure for producing circular polarization, the antenna is fed with a coaxial probe. By introducing a gap within the circular loop a traveling-wave current is excited and thus circularly polarized radiation can be achieved. An optimized circularly polarized antenna is designed through numerical analysis using a so-called parametr...
In this paper, new method for reduction of Specific Absorption Rate (SAR) in mobile handset is presented. The idea is based on the array antenna theory and this caused that by improvement of the gain, SNR be preserved and instead of one antenna and one strong hotspot, have the two antenna with two weak hotspot. For this array, the antenna must be equal with similar pattern to have the best arra...
In this paper, a coplanar waveguide (CPW)-fed dual-band slot antenna with circular polarization (CP) is presented. In order to achieve CP characteristic, an asymmetric slot and F-shaped end patch are introduced to a conventional rectangular slot antenna. Moreover, by cutting a T-shaped notch on the ground plane, the axial ratio (AR) bandwidth (ARBW) can be extended. The antenna shows left-hand ...
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