Wearable dual-band antenna with harmonic suppression for application in medical communication systems

In this paper, a wearable dual-band antenna (WDBA) with harmonic suppression capability is presented for application in wireless medical/communication systems such as industrials, scientific, and medical (ISM) bands (0.9-1 GHz and 2.4-2.48 GHz). For harmonic suppression, 3 pairs of shorted-pins resonators (SPRs) are employed. These resonators, in addition to eliminating unwanted harmonics, also cause the antenna frequency response dual-band. The final dimensions of the proposed antenna are 60 x 60 x 2 mm(3) or 0.19 x 0.19 x 0.006 lambda(3)(g) at 950 MHz. The maximum simulated gain at 1 GHz and 2.4 GHz are equal to 2.23 dB and 2.38 dB, respectively. Finally, to prove the simulations, the proposed WDBA was fabricated and its parameters were measured. The results of the measurement are in good proportion to the results of the simulations.