Trapezoidal Microstrip Patch Antenna Array for Low Frequency Medical Applications

Abstract

This paper presents the design of flexible trapezoidal radiating patch antenna array with FR4 substrate for onbody low frequency medical applications. Initial single element trapezoidal patch antenna having size of 30 x 70 mm has been modified with 2 x 2 array with same size for reduction in dimension. The array resonates at 1.891 GHz with impedance bandwidth of 80 MHz and low return loss of -26.19 dB. The VSWR of 1.103 validate the activeness of the proposed antenna array having maximum surface current 133.1 (A/m) and directivity of 4.48 dBi. The antenna array exhibit the H-Field strength of 160.52 (A/m) and E-Field of 36093.4 (V/m) prove the radiation capability at low frequency on body application. The antenna has been simulated in low frequency S band form 2 GHz to 4 GHz and compared with other works in literature. These properties demonstrate the suitability of proposed array antenna for on body medical wireless applications.

Design of higher gain linearly polarized 2×2 microstrip patch array antenna for wireless communication

“…A high-band 4×4 array designed for 3.4 and 3.8 GHz, and a low-band (LB) antenna that operates between 0.69 and 0.96 GHz [12]. Beyond this, a low-cost trapezoidal patch antenna array on FR4 substrate for low frequency medical application is developed, with this 2×2 array yielding BW enhancement 80 MHz and gain 4.48 dBi [13]. Many lightweight, cost-effective antenna designs with diverse frequency ranges have been presented, although there are still significant backlogs.…”