Abstarct: Wearable reconfigurable antennas have attracted a lot of attentions especially in monitoring applications. The basic challenge is to maintain acceptable radiation characteristics with low levels of specific absorption rate (SAR). In addition, antennas are preferred to be flexible and conformal to the human body. In this thesis, while reviewing the existing methods to improve the radiation characteristics of the antenna and achieve the reconfigurable frequency, we reduce the specific absorption rate. A wearable, reconfigurable and flexible antenna is proposed in this project. The antenna is composed of six L-shaped and two rectangular patch-shaped slots, where the frequency reconfigurability is achieved by turning a PIN diode on and off, which alters the radiation characteristics of the slots. The operating frequency of the L-shaped slots are different which make the antenna multi-band. Hence an artificial magnetic conductor (AMC) surface is integrated with the antenna to improve its radiation performance and to reduce the specific absorption rate (SAR). The prototype of the proposed antenna structure is designed and fabricated on Rogers RO5880 flexible substrate, with a dielectric constant and a thickness of 2.2 and 0.8 mm, respectively; and its performance is measured for both flat and curved configurations. The measurements show an excellent agreement with the simulations. To examine its performance as a wearable antenna, it is measured on a human body. Simulations show that the SAR level is reduced when the AMC surface is used as an isolator. The proposed wearable antenna structure can be used for wireless body area network (WBAN) and worldwide interoperability for microwave access (wimax) body-worn wireless devices