نتایج جستجو برای: dielectric loaded antenna
تعداد نتایج: 123722 فیلتر نتایج به سال:
Abstract—This paper presents a novel resistively loaded antenna design for microwave breast cancer detection. The antenna is planar and ultra-compact, and can be easily manufactured using PCB technology with embedded thin-film resistive layers. Through numerical simulations, the antenna demonstrates a return loss below −10 dB over a wide frequency range from 2 to 35 GHz. For pulse radiation in ...
─ Antipodal linear tapered slot antenna (ALTSA) for 60 GHz communications is presented in this paper. To obtain a high gain, dielectric loading in addition to the corrugation structure is applied to the ALTSA. The use of substrate integrated waveguide (SIW) technology allows a highly efficient, compact and low cost planar design. The antenna is designed and simulated in an electromagnetic field...
In this paper, a wideband circularly polarized (CP) filtering hybrid antenna is presented. The liquid dielectric resonator (DR) excited by microstrip-coupled cross-slot to generate CP radiation. Four inverted L-shaped strips are loaded on the ground plane introduce an additional resonant point, then two adjacent axial ratio (AR) minima combined improve bandwidth of single-feed antenna. By etchi...
In this paper Electromagnetic Band Gap structure with microstrip antenna has been proposed. Many small and compact periodic EBGs have been investigated to design the antenna. Simulation is done on the HFSS software tool. The antenna is designed on the 21x31mm FR4 substrate with the dielectric constant of 4.4. The designed antenna is designed to resonate at 8GHz frequency. The designed antenna i...
This study presents a compact broadband wide-slot antenna with left-hand circular polarization compatible both LTE 42 and 43 standards of 5G mid-band applications. The proposed is fabricated on an FR4 dielectric substrate overall dimensions $0.41\lambda _{o}\time...
A novel dielectric embedded electronically steerable passive array radiator (ESPAR) (DE-ESPAR) antenna array for mobile wireless communication terminal is developed by finite element method based numerical modeling technique. The size reduction of the seven-element monopole antenna was accomplished by embedding the array in a cylindrical rod of FIK ceramic complex with a relative permittivity a...
A new method of designing horn-fed frequency scanning holographic antenna is proposed. The artificial surface design of holographic antenna is based on generalized law of reflection. The input admittance is utilized to construct the interference pattern of the surface which is intervened by the excitation wave and the required radiation wave. The scalar admittance unit cell which is composed of...
This paper shows injection molded millimeter-wave horn array antenna for the 1-dimensional APAA(Active Phase Array Antenna). The antenna is composed of horn antennas, grooved circular waveguide polarizers, E-plane T-junctions, and E-plane bends employing dielectric waveguides. This structure makes it possible to manufacture a feed circuit and radiating elements as an integrated unit by using in...
this paper presents a miniaturized open-ended rectangular waveguide antenna radiating below the cut-off frequency of the waveguide with a large bandwidth. Waveguide miniaturization is achieved by periodically loading the antenna with electromagnetic metamaterials consisting of infinity shaped resonators. The metamaterial cell is designed to have a high effective dielectric permittivity in the f...
In this paper, a wideband dual segment cylindrical dielectric resonator antenna (CDRA) is proposed for 5 GHz WLAN/WiMAX band. The simulation results for the radiation characteristics of the proposed antenna and the absorbed power distribution in a homogenous bio-medium (muscle layer) in direct contact with the proposed CDRA are reported at different frequencies. The specific absorption rate (SA...
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