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A wireless power transfer system is proposed using a dual frequency retrodirective array for automatic beam steering and rectenna as a transmitter and receiver, respectively. Circularly polarized microstrip circular patch antennas with four shorting pins are used as array elements to suppress surface waves. The proposed design eliminates undesired coupling between array elements due to surface waves...
In the research project, a design concept of the mm-wave antenna array operating at 38 GHz is proposed by using a 64-element micorstrip patch antenna array. Theoretical and experimental study validates the design approach for the use of the Fifth generation (5G) wireless communication system.
This paper presents performance enhancement of a conventional circularly-polarized (CP) microstrip patch array using anisotropic metasurfaces. In addition to boresight gain, axial-ratio and impedance bandwidth amplifications, sidelobe levels suppression were also focused.
This paper presents a methodology for design a more reliable printed microstrip Rotman lens with the support of electromagnetic simulation software. A lens with four beam ports and four array ports in the range of 4 to 6 GHz is developed and manufactured with simulated and measured results of reflection coefficient, isolation and radiation pattern, showing a good performance of this methodology.
This paper explains the design and implementation process of a microstrip antenna array on Ku-Band for satellite television reception. The proposed antenna was designed to operate at 11.8 GHz to 12.8 GHz with reflection coefficient or return loss ≤ 10 dB, and the antenna gain of ≥ 20 dBi. Antenna polarization was designed to be linear. The antenna was then fabricated on FR4 materials and shows that...
This study proposes a simple self-calibration system that involves applying the phase-match method (PMM) in the far-field calibration of a deployed active array. An 8-element microstrip antenna array was applied to validate the proposed method experimentally.
A novel concept for a dual-polarized microstrip antenna array with a center frequency of 23.75 GHz is introduced. The array is composed of ten single square patch elements having equal resonance frequencies in both directions. The microstrip patches are rotated by 45 ° and linearly aligned to obtain a fan beam antenna characteristic. The feed structure is in seriesparallel configuration with best...
A novel uniplanar compact electromagnetic bandgap (UCEBG) configuration is presented for back-lobe suppression of microstrip patch antenna (MPA) array at 60 GHz. The proposed UCEBG consists of an array of nonuniform circular metallic patches on top surface of the array to reduce the back-lobe level by eliminating undesired surface currents. Hence, by utilizing the investigated UCEBG, the front-to-back...
This paper presents the development of a novel phased array antenna which is integrated with a series of parasitics to improve the beam steering resolution of the array. The array is based on a circular microstrip element. With the use of the parasitics, a steering range of ±15° is achieved for a specific phased array direction. This introduces a dual means of beam steering, namely wide angle steering...
In this paper the design and the implementation of a cavity antenna array in PCB technology for automotive radar applications is presented. The array consists of four cavity antennas fed by a microstrip-line feeding network and H-shaped coupling apertures in the ground plane. Simulation and measurement results show that the proposed structure is a suitable candidate for the integration in automotive...
Electromagnetic fence designs have potential to provide border security especially for military tasks. In this paper, design, simulation and experimental results of a microstrip patch antenna array which may be suitable for an electromagnetic fence application at C-band are presented. Moreover, an experimental demonstration of the effect of a person on the signal propagation between the transmitter...
Recently, the development of composite right / left-handed transmission lines (CRLHTLs) has received considerable attention due to the unique propagation characteristics. Because of this increase in applications, CRLHTLs are being implemented in RF systems with other printed circuitry, such as microstrip antennas. In this paper, harmonics resonance frequency of different embedded CRLH-TL array has...
In this paper switched beam smart antenna systems are investigated to improve the performance of wireless networks. The microstrip technology of antenna arrays with Butler matrix topology as a beam-former is used to implement the switched beam smart antenna system. The optimum design of a 8×8 planar Butler matrix array, operating at 2.4 GHz for WLAN applications. Systems design and optimization was...
Recently the wireless power transmission (WPT) technology is a priority research direction in the world. The WPT can be divided into two main orientations: firstly WPT using inductive coupling, resonant coupling, and secondly WPT using the beam power technologies by microwave power beam and laser power beam. The WPT system with the beam power technology consists of a solar power satellite and rectenna...
In this letter the design and simulation of an 0.43GHz P/UHF band microstrip patch antenna as single element, 2, 4, 8 & 16-element linear array using RT/duroid 6002 substrate was proposed. An inter-element spacing of 0.73λ for limited scan angle coverage. Wind profiling radar operating in Doppler beam swinging mode and spaced antenna drift technique mode needs to have a large aperture antenna...
A single-ended microstrip grid array antenna has been designed and measured for 24 GHz automotive radars application. It has been designed on Rogers 5880 substrate with dimensions of 60×60×0.787 mm. The antenna exhibits 2.45 GHz impedance bandwidth, 19.26 dBi peak realized gain and broadside pencil-beam radiation pattern with low side lobe and weak cross-polarization.
Metamaterials represent a new paradigm in electromagnetic science and technology. They have already leaded to many unprecedented microwave applications, which may be classified in three categories: guided-wave, radiated-wave and refracted-wave applications. Control and manipulation of electromagnetic waves is at the heart of many industries from wireless communication, Internet and optical data storage...
A planar substrate integrated waveguide slot-fed microstrip grid array antenna for the frequency range 76–81 GHz is presented. The antenna is realized on a standard soft RF substrate. It is fed using a transverse slot in a substrate integrated waveguide on a separate substrate layer below the antenna. A wideband microstrip to substrate integrated waveguide is designed to feed the antenna. Measurement...
This work proposes a design of single element and two element antenna array by using SIW (substrate integrated waveguide) technology. SIW techniques provides low cost, small size and convenient integration with planer circuit. Using antenna array enhance the directivity and gain of the proposed antenna. The dimension of proposed antenna is 37 × 45.5mm2 and substrate height is 1.6mm. The proposed antenna...
The aim of this paper is to design, develop and simulate a linear patch antenna array working at 9.5 GHZ and integrate it on a microwave laminate. First, two rectangular patch antennas, one with a direct feed and the other with an inset feed are designed and compared to each other then 1×8 power divider is designed and simulated. Finally, eight rectangular radiating patches on a low dielectric constant...
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