In multi-user beamforming systems, the inter-user interference are controlled by spatial filtering. Since the implementation of digital beamforming is difficult due to high hardware cost of large array system, the analog beamforming system with one phase shifter at each antenna element is considered with antenna selection scheme. However, the beamwidth is not sufficiently narrow to perfectly re...

Microstrip antenna arrays are one of the popular antenna configurations for nowadays wireless communication system. The paper proposes a compact novel design of multiple elements electromagnetically coupled stacked antenna array which operates in Cband. The antenna resonates at 6 GHz and shows bandwidth of 521 MHz with 5.84dBi gain. The proposed antenna shows the ECC to be 0.03 which indicated ...

A non-invasive antenna array is used to study medium and high-frequency plasma instabilities and to generate a spatial and temporal map of the azimuthal drift current in a coaxial Hall discharge. Typical Hall plasmas are characterized by strongly magnetized electrons and streaming ions and it is hoped that a better understanding of the azimuthal drift in such devices might further elucidate the...

In the recent years, the optimization techniques using evolutionary algorithms have been widely used to solve electromagnetic problems. These algorithms use thinning the antenna arrays with the aim of reducing the complexity and thus achieving the optimal solution and decreasing the side lobe level. To obtain the optimal solution, thinning is performed by removing some elements in an array thro...

Satellite Communication Systems are beneficial in providing communication services to vast regions especially where the adequate infrastructure for communication may not be constructed. Wireless communication is one of the fastest growing fields in the engineering world. Introduction on adaptive antenna array is described in this paper. Linear adaptive algorithm LMS (Least mean square) is used ...

The bit error rate (BER) performance of single-carrier (SC) block transmission in a frequency-selective fading channel can be significantly improved by the use of frequency-domain equalization (FDE). However, in multi-cell environment, the BER performance is degraded due to co-channel interference. Adaptive antenna array (AAA) is effective to suppress the cochannel interference. In this paper, ...

The paper is devoted to design of impulse or equivalent ultra-wide band array antenna for subsurface radar system. Receiving elements of this antenna are arranged in array with small physical aperture and polarimetric features. Two transmitting element support two polarization states for radiating signals. The radar antenna provides down-looking scanning in subsurface medium for small areas cov...

This paper presents a dual-band planar antenna array for ISM band applications (2.4 GHz and 2.45 GHz). This antenna is proposed for indoor applications and enables adaptive beamforming and angle of arrival (AOA) estimation. An adaptive beamforming algorithm is applied for a planar antenna array, which is able to steer its main beam and nulls in azimuth and elevation planes over a wide frequency...

Micro Strip Antenna Array has been proposed with high efficiency for wireless communication. Micro strip antenna arrays are widely used in various applications like in wireless communication system, satellite communication, Radar systems, Global positioning systems, Radio Frequency Identification (RFID), Worldwide interoperability for microwave access (WiMax), Rectenna applications, Telemedicin...

NAVSYS High Gain Advanced GPS Receiver (HAGR) uses a digital beam-steering antenna array to enable up to eight GPS satellites to be tracked, each with up to 10 dBi of additional antenna gain over a conventional receiver solution. This digital, PC-based architecture provides a cost-effective solution for commercial applications where more precise GPS measurements are needed. The additional gain ...