Mobile Antenna Systems Handbook, Second Edition
Mobile Antenna Systems Handbook, Second Edition
Antenna Theory: Analysis and Design
Antenna Theory: Analysis and Design
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The huge expansion of mobile terminal users and the high data rate services has lead the networks to their limits. During last years there is intent research in how to increase the capacity in networks. The base stations have mainly antennas with omnidirectional or sectored patterns. There is a need for adaptive radiation pattern in order to save power and to have larger capacity that means an increased number of users. To this direction, phased array antennas are commonly used. Phased arrays have the advantage that controlling the phase angle of each array element it is feasible to control the radiation pattern of the array and to steer the lobe in a desirable direction. In the design and evaluation of communications systems, there is a growing need for array antenna characterization. The main parameter that characterizes such an antenna is the Array Factor (AF). In this work, a methodology for the measurement of AF is presented. This methodology is applied on a reference array prototype made for the evaluation of the proposed measurement procedure. The results of the measurements are compared to those obtained both from theory and EM model simulation.