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Showing posts with the label Antenna Theory

Multiple Input Multiple Output (MIMO) system: An introduction

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An introduction to Multiple Input Multiple Output (MIMO) system      Multiple Input Multiple Output (MIMO) system is a radio antenna technology, which  uses multiple antennas to enhance quality of the signal and RF link strength . It transmits the same data as several signals simultaneously through  multiple path via multiple antennas and utilizing a single channel. The transmitted  data splits into multiple data stream at transmitter end and recombine at the receiver  end by another MIMO antenna having same number of antennas. The receiver is also  designed to consider the time delay due to multipath propagation. The additional noise  or interference are also considered for designing the complete MIMO system. The  MIMO system can use the reflected and bounced signal as advantage to improve the  signal strength. It is very useful solution for the urban environment where, the absence  of line of sight results into signal degrada...

Design equations of Rectangular Microstrip Patch Antenna

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Following design equation can be used to calculate the width and length of rectangular microstrip patch antenna and simulation of 2.4 GHz inset-feed rectangular patch antenna can be found in follwing video.  Microstrip antenna with inset-feed line                           Part-1 Design step for the calculation of W and L Step-1 : To calcualte width 'W' use follwing formula Step-2:   Calculate the effective dielectric constant using formula below. Here    ' ε r '  is relative  dielectric constant of the material. 'h' is height of the substrate and W is the width of patch calculated in first step. Step-3:   Calculate ΔL using formula below. Step-4:   Calculate length of the patch using formula below. v 0    is speed of light in free space. Part-2 Feedline calculation Step-1:   Calculate the input impdedance of the pa...