The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A new modified hexagonal design structure with broadband‐negative refractive index metamaterial was proposed in this manuscript. The proposed structure was composed of two symmetrical metallic layers which had same thickness and an FR4 dielectric layer that was sandwiched between these metallic layers. Frequency domain solver of CST microwave studio, which is commercially available was utilized to...
A Cuboid Dielectric Resonator Antenna fed by microstrip feed line is studied. The dielectric resonator of the antenna is made by a material with high dielectric constant ∊r=30. The impedance matching of dielectric resonator can be improved by using a # slot in the ground. In additional, a two elements array is used to enhance the performance of the antenna. This proposed antenna is suitable for long-term...
This paper presents the performance of bandwidth from a triangular loop shape radiating element stacked on a glass with variation of dielectric permittivity values. In this study, the dielectric permittivity value of the glass was varied from 1.5 to 10. A Kapton film (radiating element) was positioned on top of the glass and grounded with a copper layer. The radiating element was designed to operate...
An analysis on element shape geometry is presented in this paper to enhance the reflectarray element bandwidth, to produce a more reliable phase distribution over the reflectarray antenna aperture and to have a good reflection element performance. The shape analysis consists of circular patch element, circular ring element and circular square ring element. The reflection coefficient parameter focuses...
This study aims to design a new cuboid dielectric resonator antenna (DRA) for LTE Femtocell base stations. The dielectric waveguide model (DWM) was used to carry out the dimension of cuboid dielectric resonator antenna. The dielectric cuboid is based on a high dielectric constant ceramic material, which is ε=30. The feeding structure is dependent on microstrip feed line resides above a FR4 substrate...
In this paper a planar microstrip antenna with dual stop-band functionality is presented for ultra-wideband application. The proposed design comprises a radiating patch and partial conducting ground and printed on double sides of FR4 dielectric substrate material. To attain dual stop band functionality, two parasitic slits are etched below the radiating element along with the ground plane. Experimental...
This paper presents an analysis of reflectarray antenna in simple patch design unit cell with the effect of varactor diode integrated. The small shift of resonant frequency with capacitance varying results in changes of reflected phase of operating frequency. The reflected phase adjustable of element is required for reconfigurable reflectarray design. It will further contribute the phase shift capability...
This paper presents the performance of scattering parameters from different types of transparent conductive thin film. In this study, four types of optically conductive thin film i.e. AgHT-4, AgHT-8, ITO, and Kapton film have been investigated. Each film was designed with triangular loop shape and positioned on top of cover glass of solar panel and grounded RT/Duroid 5880 substrate. The element was...
An analysis of phase response from different types of transparent conductive thin film is presented in this paper. Surface current performance of each film which was shaped with triangular loop shape is then investigated. It has been demonstrated from the CST simulated results that element of Kapton film exhibits the best scattering parameter performance with bandwidth over 15% and linear phase range...
This paper presents an investigation of scattering phase of reflectarray element in double split ring shape integrated with varactor diode across the gap for feasibility of reflectarray antenna in beam scanning approach. The paper contributes simple design with single substrate and single varactor diode at Ku-band for space communication. The reflected phase and reflection loss curves for reflectarray...
This paper describes a study of radiation pattern diversity with reference to the polarization by combining ring patch with C-patch reflectarray antenna element. For monopulse antenna application, patches were designed to give the reflection phase of 180° phase difference between two orthogonal polarizations. The simple geometric design of a ring and C-shape patches have been exploited to obtain the...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.