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Kumara Swamy, K.
- Design and Development of SMART Antenna using Butler Matrix
Authors
1 Osmania University, Hyderabad, IN
2 Rayat Institute of Engineering and Information Technology, Railmajra (Punjab), IN
3 Hasvita Institute of Engineering and Technology, A.P., IN
Source
Wireless Communication, Vol 1, No 7 (2009), Pagination: 299-304Abstract
The Multi beam Antenna is a revolutionary design which is able to access a large number of users in cellular communication systems. The number of users increasing very rapidly day by day so that the communication systems are becoming more complex. This complexity can be reduced to some extent by the multiple beam smart antennas. Multiple beam smart antenna system covers a number of users simultaneously so that information can be received from more than one user at the same time. The antennas which are used for receiving information from more than one direction are called as Smart antennas. The main aim of this paper work is to design and develop a multiple beam antenna producing eight orthogonal beams simultaneously at the frequency of 2GHz. For this, eight element dipole antenna array is designed which is fed by Butler matrix. Specifications: Frequency: 2GHz, Relative Permittivity εr: 6.15, Characteristic Impedance Zo: 50Ω, H (thickness of the substrate): 1.27 mm.
Keywords
Butler Matrix, ADS, Hybrid Junction.- Design and Development of Microstrip Patched Antenna Array
Authors
1 Osmania University, Hyderabad, IN
2 Rayat Institute of Engineering & Information Technology, Railmajra (Punjab), IN
3 Hasvita Institute of Engineering & Technology, A. P., IN
Source
Programmable Device Circuits and Systems, Vol 1, No 7 (2009), Pagination: 189-196Abstract
Microstrip antennas are one of the most innovative developments in antenna theory and design in recent years, and are increasingly finding application in a wide range of modern microwave systems. Inhibiting characteristics of a single microstrip patch, like low gain and smaller bandwidth, make it more popular for array configuration. A microstrip array is the integration of microstrip elements with a feed network consisting of power dividers, transmission lines. The aim of this work is to design and implement a microstrip linear array antenna. Eight U-slot loaded patches on an FR4_epoxy substrate suspended over an air gap are arranged in a linear configuration to achieve required radiation properties. The air dielectric strip line feed network consists of T-junction power dividers is simulated and realized. The antenna array is designed using standard equations and simulated by professional software called, High Frequency Structural Simulator (HFSS). Finally, the simulated reflection response and radiation characteristics of the designed antenna array are corroborated using experimental results obtained from the Network Analyzer and the Antenna Transmission & Measurement System, respectively. The designed array exhibited very close radiation response to that of design objective.