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A novel broadband Terahertz antenna design covering 100–600 GHz is developed as imaging pixel of THz focal plane array. Proposed focal plane array consist of novel cross bow tie antenna on quartz substrate behind the quartz hyper hemispherical lens. FPA performance is studied at low and high frequencies to determine the pixel pitch and number of effective pixels. Off axis performance of FPA is studied...
Characterization of efficiency is an important consideration to ensure the proper operation of an all-textile wearable antenna. In this work, a small, novel textile antenna is designed based on a planar inverted-F structure (PIFA). The structure incorporates an edge-feeding plate, symmetrical design, and well-placed slot, in order to ease fabrication. A thin conductive textile, Pure Copper Polyester...
Coupled artificial neural network (ANN) and genetic algorithm (GA) models are developed for the design of broadband tapered slot antenna array elements. The ANN is employed to establish the complicated relationships between the key array performance indicator, i.e. active reflection coefficient, and its element parameters. The trained ANN models are combined with the GA to optimise the element parameters...
Our work has demonstrated that the Fourier decomposition method to predict mutual coupling between elements in a strongly-coupled array is effective and accurate. In principle, this method is applicable to any type of elements in a large array where the edge effects can be ignored. Further research will be conducted toward developing interpolation method of ARC over phase shift U and V to reduce the...
The printed quasi-self-complementary antenna fed by a 50 Omega coaxial cable is proposed and investigated in this paper. It is demonstrated numerically and experimentally that the proposed printed quasi-self-complementary antenna can achieve an ultra wide impedance bandwidth, from 1.3 GHz to more than 12 GHz. The antenna also exhibits a compact and small dimension, only 0.22 Omega at 1.3 GHz. An evolution...
A Vivaldi TSA array has been designed and analysed. It can operate over 4-16GHz and be capable of scanning to 50deg. This study shows that the strong mutual coupling between elements plays a constructive role in the array performance of active impedance matching. The introduction of corrugated edge to the TSA element has no effect on the active matching but the scan gains are improved. Further research...
A novel and simple design of a quasi-self-complementary antenna for ultra wideband applications is presented. The proposed antenna, which is fed by a 50 Omega coplanar waveguide without using a matching circuit, can offer an ultra-wide 10 dB impedance bandwidth. It also features a compact and small size, only 0.22 lambda at 1.3 GHz, which is the lower end of the bandwidth. Good agreement is achieved...
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