This paper presents optimization problem formulations to design meander-line antennas for passive UHF radio frequency\r\nidentification tags based on given specifications of input impedance, frequency range, and geometric constraints. In this\r\napplication, there is a need for directive transponders to select properly the target tag, which in turn must be ideally isotropic. The\r\ndesign of an effective meander-line antenna for RFID purposes requires balancing geometrical characteristics with the microchip\r\nimpedance. Therefore, there is an issue of optimization in determining the antenna parameters for best performance. The antenna\r\nis analyzed by a method of moments. Some results using a deterministic optimization algorithm are shown.
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