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This paper presents our study on a single-offset parabolic reflector antenna operating at 220 GHz, which offers high gain as well as the capability of beam steering for longdistance high-capacity terahertz wireless communications. With a switch-controlled array placing on the offset focal plane as the primary feed, the beam steering can be realized by selecting single element in different position...
This paper presents and characterizes a novel high gain circularly polarized (CP) antenna array for 5G applications. The array element is an antipodal curvedly tapered slot antenna (ACTSA) generating circularly polarized field. The CP ACTSA fed by substrate integrated waveguide (SIW) is convenient to integrate with substrates. By introducing two sheet metals on the two sides of the rectangular Rogers...
A dual-polarized wideband substrate-integrated-waveguide fed aperture-coupled slot antenna array for 60 GHz is proposed. By cutting a semicircle shape on the edge of the crossed-slot antenna, the impedance bandwidth of the proposed antenna is effectively widen and achieves overlapped bandwidth of 16.7% for simulated |S11| and |S22|. In addition, over 35 dB isolation between two polarization and low...
Usually, the stray signals from antenna test environment and compact antenna test range (CATR) system may cause errors in the measured patterns. In order to improve the measurement accuracy of a specific antenna test system, the techniques about antenna pattern correction for mitigating the effects of these stray signals are required. In this paper, a two-unit virtual array method and its extended...
A compact triple band antenna array for GNSS application, covers GPS L1, L2 and L5 frequency bands, is proposed in this paper. The array is comprised of 4 radiating elements spaced 0.47 wavelength apart (center to center) at the GPS L1 band and filled with dielectric material and three stacked patches. It is observed that due to the compactness of the antenna array the mutual coupling degrades the...
In this paper, the properties of graphene are studied and simulated. The phenomenon of graphene surface Plasmon propagation is verified by simulation. It is proved that graphene materials have wide application prospect in terahertz frequency band. The metamaterial graphene also have been used in the design of the reflectarray antenna in this paper. Through the design and simulation of the reflectarray...
In this paper a tapered slot antenna array has been analyzed and designed. Both the simulation and measurement results show that the antenna array has scanned impedance bandwidths over the frequency band of 1.8-9 GHz and scan angle up to 45deg. This work reveals that the strong mutual coupling between elements has good effects to the overall performance of the array. It can be well used to achieve...
A novel, ultra-wideband antenna element has been developed for broadband antenna array applications. It has novel asymmetric tapered slot structure and is fed by microstrip line. The antenna element can operate over an ultra-wideband from 1.5 GHz-9.5 GHz. A broadband antenna array composed by the novel antenna elements is also proposed. The asymmetric tapered slot antenna and its mirror image are...
In this paper the theory and experiment have demonstrated a good performance of this new antenna array. The operating bandwidth of this antenna array is from 3.1 GHz to 12.4 GHz, which covers all the frequency range of UWB, and the radiation pattern is bidirectional.
A novel unsymmetrical anti-podal taper slot element has been proposed for array antenna to enhance the bandwidth of ultra wide band array. By using unsymmetrical taper slot structure, the aperture of the slot in lower band can be increased. Compared with symmetric anti-podal taper slot array in the same size, the relative bandwidth has been improved to 8:1 approximately instead of 5:1. Experimental...
We have developed a 1 times 4 wideband array structure for multiple wireless applications. The utilized single element is a wide-slot antenna and has demonstrated ultra-wideband operation characteristics. The proposed antenna system associated with feeding network and antenna elements can be integrated in a single substrate. Consequently, such a design is with low fabrication and assembly cost and...
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