A conformal antenna array is analysed using an enhanced FDTD method. This antenna array is designed for use for in a channel sounder for characterising MIMO channels at UMTS frequencies, and (scaled to work at higher frequencies) may also be proposed as a MIMO antenna for wireless LANs. The FDTD model is shown to be extremely accurate for characterising important parameters of the array such as...

Genetic algorithm for optimization of beam forming in linear array antenna is used. The goal is to achieve a -30 dB in the null of pattern with the capability of steering the null angle over the all frequency band. Our simulation shows a -30 dB up to -60 dB for this purpose. SPAA (Smart Phased Array Antenna) which is software for analysis, synthesis and simulation of adaptive phased array anten...

This paper describes the design of a compact, M-code capable, four element GPS adaptive antenna arrays made from stacked patch microstrip antenna elements. Possible applications for these antenna arrays are in military airborne platforms where the space available for installing antennas is very limited. To meet future GPS M code requirements, the antenna elements were designed for a bandwidth o...

This paper proposed a microstrip antenna array with DGS (Defective Ground Structure). The structure in this work is 2*1 microstrip patch array antenna using substrate with h= 0.762 mm and εr = 3.2. Two triangular-shaped patches are located on opposite side of PCB and spaced 14mm apart by a small ground portion. The proposed DGS of I-shape is placed in the ground plane. It does provide a method ...

The smart antenna systems combine antenna arrays with digital signal processing (DSP) algorithms. In a smart antenna system a specialized signal processor computes the direction of arrival (DOA) of a user and also adds the strength of the signals from each antenna element together to form a beam towards the direction as computed by DOA. If additional users join in the system, the adaptive anten...

Plasma antennas have promising prospects for practical use with quick changes in their parameters a wide frequency range. In this work, the radiation pattern of plasma antenna system, which consists short linear surrounded by fluorescent lamps, is analyzed range 0.5–1.5 GHz. numerical simulation, gas-discharge were used, obtained using drift theory. addition, an analysis patterns simple and int...

This paper presents a light weight multilayer 14 GHz antenna array on an organic LCP (Liquid Crystal Polymer) substrate. The antenna structure includes a two layer corporate feed network, which is partially embedded, connected with vias, otherwise known as ‘stitched’. First, using 4x4 microstrip patch arrays as the unit array, a 6.5 beam steer is observed when a 90 o phase difference is applied...

The paper proposes design of an array antenna with proximity coupled feeding at frequency 2.55 GHz. At first, a linearly polarised rectangular patch antenna is discussed. The basic rectangular structure is modified using proximity coupled feed to enhance the impedance bandwidth. Then, in order to introduce circular polarisation, the patch structure is further modified into Split Ring structure....

Circular antenna array has gained immense popularity in the field of communications nowadays. It has proved to be a better alternative over other types of antenna array configuration due to its all-azimuth scan capability, and a beam pattern which can be kept invariant. This paper is basically concerned with the thinning of a large multiple concentric circular ring arrays of uniformly excited i...