The design of the reflectarray is divided into two steps, the element design, and the system desi... more The design of the reflectarray is divided into two steps, the element design, and the system design. In this article, the element design is discussed. A novel unit-cells element with a miniaturized structure is proposed for the X-band frequency. The elements are designed, fabricated and measured. Using a low-cost substrate FR-4 the phase response range of the proposed unit cell element can achieve more than 349° by varying a slot inside the element that is sufficient to provide satisfactory performance with the reflectarray antenna. A good agreement between measured and simulated results are obtained.
A low-cost single-layer substrate-integrated waveguide (SIW) cavity-backed slot antenna is propos... more A low-cost single-layer substrate-integrated waveguide (SIW) cavity-backed slot antenna is proposed for millimeterwave applications. The structure is designed to operate at the W-band. The T-shaped slot antenna is placed on the backside of the SIW and fed by a grounded coplanar waveguide (GCPW) transmission line. A transition between the (GCPW) and the SIW is also designed. The simulated results provide that the antenna has a stable gain over the frequency range (98.79-100.56) GHz with a maximum value of around 6 dBi also high radiation efficiency. Index Terms-W-band, cavity backed-slot antenna, grounded coplanar waveguide(GCPW), millimeter-wave applications.
The reflectarray combines much of the simplicity of the reflector antenna with the performance of... more The reflectarray combines much of the simplicity of the reflector antenna with the performance of the array antenna. This paper presents an analysis and design of unit cell of reflectarray antenna using a square patch and square loop radiating elements and the steps taken in the design of a reflectarray unit cell operates in X -Band (8-12 GHz) at the center frequency of 10 GHz. The result of an analysis is generated from the Computer CST Microwave Studio using the approach of Floquet. This model takes into account a mutual coupling between elements, and is an efficient way to accurately characterize reflectarray elements.
The design of the reflectarray is divided into two steps, the element design, and the system desi... more The design of the reflectarray is divided into two steps, the element design, and the system design. In this article, the element design is discussed. A novel unit-cells element with a miniaturized structure is proposed for the X-band frequency. The elements are designed, fabricated and measured. Using a low-cost substrate FR-4 the phase response range of the proposed unit cell element can achieve more than 349° by varying a slot inside the element that is sufficient to provide satisfactory performance with the reflectarray antenna. A good agreement between measured and simulated results are obtained.
A low-cost single-layer substrate-integrated waveguide (SIW) cavity-backed slot antenna is propos... more A low-cost single-layer substrate-integrated waveguide (SIW) cavity-backed slot antenna is proposed for millimeterwave applications. The structure is designed to operate at the W-band. The T-shaped slot antenna is placed on the backside of the SIW and fed by a grounded coplanar waveguide (GCPW) transmission line. A transition between the (GCPW) and the SIW is also designed. The simulated results provide that the antenna has a stable gain over the frequency range (98.79-100.56) GHz with a maximum value of around 6 dBi also high radiation efficiency. Index Terms-W-band, cavity backed-slot antenna, grounded coplanar waveguide(GCPW), millimeter-wave applications.
The reflectarray combines much of the simplicity of the reflector antenna with the performance of... more The reflectarray combines much of the simplicity of the reflector antenna with the performance of the array antenna. This paper presents an analysis and design of unit cell of reflectarray antenna using a square patch and square loop radiating elements and the steps taken in the design of a reflectarray unit cell operates in X -Band (8-12 GHz) at the center frequency of 10 GHz. The result of an analysis is generated from the Computer CST Microwave Studio using the approach of Floquet. This model takes into account a mutual coupling between elements, and is an efficient way to accurately characterize reflectarray elements.
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