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A broadband and high gain transmitarray (TA) antenna, operating at 60 GHz, is presented. As a constituent part of the TA, a multi-layer unit cell (UC) is optimally designed to realize a linear transmission phase response with a continuous variation range of at least 270 ° and a transmission loss less than −3 dB across the desired frequency range from 58 GHz to 64 GHz. Furthermore, an antipodal exponential...
This paper presents a two dimensional (2D) dielectric resonator antenna (DRA) array fed by a folded substrate integrated waveguide (SIW) feeding network. By integrating the SIW feeding network in two dielectric layers, the antenna array becomes compact and low profile which is suitable for portable millimeter wave applications. The antenna array with the folded feeding network is studied numerically...
A two-element patch antenna is excited by a transverse slot cut on the substrate integrated wave-guide top plane is presented. It is then used as a building block to form a linear array of 4 elements at mm-wave band. The proposed design is compact, low profile, and efficient. Additionally, it has high F/B ratio and high linear polarization purity. The simulation results of 1×4 array shows an operating...
An aperture coupled circular patch antenna is presented for dual circular polarization at Ka-band. Two microstrip lines are used to excite a circular patch through two slots to generate a broadband RHCP and LHCP radiation with high isolation between them. An aperture coupling is employed to provide a wide beamwidth axial ratio. The proposed antenna is a good element candidate to be considered for...
Efficient substrate integrated waveguide (SIW) to co-planar waveguide (CPW) transition junction implemented in a multi-layer structure is presented for phased array millimeter-wave applications. The coupling between the two different lines takes place via an aperture (slot) cut on the SIW top ground plane. The transition is simulated by the full-wave solver over the frequency band 29–30 GHz. It shows...
This paper presents a method for the integration of dielectric resonator antenna (DRA) array with substrate integrated waveguide (SIW) arranged in sequential rotation configuration. The proposed antenna structure is symmetric, low loss and compact. Linear-polarized (LP) DRA elements are used as loads to a hybrid junction SIW splitter to generate high purity circular polarized (CP) radiation. The simulation...
A novel high gain dielectric tapered antenna, operating at the W-band, is presented. The image-guide antenna is made of high-resistivity Silicon. Two short parasitic tapered elements are used to increase the antenna gain and to reduce the side-lobe levels. A Laser cutting technique is tuned for the fabrication of the prototype antenna. The results show a return loss better than 22 dB at 90 GHz. The...
A low cost and high radiation efficiency planar two dimensional (2D) antenna array design based upon substrate integrated waveguide (SIW) hybrid feed technology is proposed. It is more convenient for highly efficient millimeter-wave (mm-Wave) applications such as radar sensing and wireless communication. The SIW is a low loss structure that minimizes conduction loss which dominates at mmW. A general...
Recent telecommunications standards are requiring antenna technologies to evolve towards low-cost, high-integration packages. Furthermore, higher gain and radiation pattern constraints result in the need of steerable, versatile antenna arrays. One of the key requirements is the overall cost, including non-recurring engineering or designs costs should be reasonably low for consumer market applications...
In this paper, a generic simple circuit model for 1 x M SlW-parallelfed DRA linear array is presented as a fast method for the analysis and optimization of the larger arrays. This circuit model provides good estimates for the antenna return loss and radiation pattern characteristics. It is based on N-port circuit analysis of the antenna system.
With rapidly increasing demand for bandwidth, and the recent advances in nano-metric Si-based integrated circuit technologies, millimeter-wave (mmW) systems are finding numerous commercial applications, which, unlike military and scientific usages, are extremely cost sensitive. A wide range of applications at mmW frequencies can be found in such area as wireless communications network (60 GHz), automotive...
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