Design and analysis of compact printed circuit antenna for wireless medical telemetry service

A compact printed antenna with a spiral winding, an inverted-F configuration and a microstrip feed working in the WMTS (Wireless Medical Telemetry Service) band (608–614MHz) is proposed. The construction of proposed antenna is done on a low-cost FR-4 material with a thickness of 1.6mm and ε
r
=4.3. Proposed antenna has a compact size of 37×20 mm
²
including a ground plane. Antenna is simulated using CST MWS software and it is evident from the simulation results that the presented antenna resonates at 610MHz, has a bandwidth of 9MHz with S
11
<−10dB, a peak realized gain of −11dBi with omnidirectional radiation pattern and a 50ohm impedance without any additional matching network.