This paper presents a novel dual-band wearable antenna using Rectangular Parasitic Elements (RPEs) and Defected Ground Structure (DGS) methods in telemedicine applications. The dual-band ranges covered by this antenna are in 890-960 MHz and 1710-1885 MHz which are used in Global System for Mobile communications (GSM) applications. Wearable and flexible material that is used as the substrate is a standard rubber with dielectric constant εr = 3, thickness=1.57 mm, and tan (δ) = 0.0095. The dimensions of the proposed wearable antenna are 70×85×1.64 mm3 or 0.0007λg3 at 900 MHz. The measured maximum gain is achieved at 900 MHz and 1800 MHz, which are equal to 7.46 dB and 8.13 dB, respectively. A good agreement between simulation and experimental results are obtained by a fabricated prototype of the antenna. Therefore, the results represent this antenna is a promising candidate in biomedical technology such as tele-monitoring at the GSM bands.

Keywords