Investigation on PIFA and Folded-IFA for TPMS Receiver

This paper presents a comparative study between a printed FIFA on PCB and a PIFA integrated in a TPMS Reader. The two antennas are modelled with the enclosure and all metallic parts of the reader, and simulated using a 3D EM simulator. The designed Folded IFA has dimensions of $0.1\ast \lambda 0 \mathrm{x}0.1\ast \lambda 0$. Compared with the dimension of the actual PIFA $0.1\ast \lambda 0 \mathrm{x}0.1\ast \lambda 0 \mathrm{x}0.014\ast \lambda 0$, the proposed miniaturized antenna has better performance than the PIFA and can reduce the volume of the device up to 50%. The simulation results are validated by the measurements performed on the prototyped readers with the two antennas. The performances of the readers are evaluated with a developed test bench based on the ADALM-Pluto SDR platform and a Raspberry PI. The readers are also tested in a vehicle equipped with TPMS sensors.