Low SAR Microstrip Patch Antenna for Mobile Phone

Abstract

The aim of this article is to design a new microstrip-fed patch antenna for cell phone applications. The antenna design is composed of slots and FR-4 dielectric substrate fed by a partial ground plane and a microstrip line. The user's effects on antenna performances are also analyzed using standard SAM phantom. The specific absorption rate (SAR) values of proposed antenna are evaluated for different frequency bands considering cheek position of talk mode. The proposed antenna has an impedance bandwidth (-10 dB reflection coefficients) 100 MHz (0.87-0.97 GHz, lower band), 50 MHz (1.47-1.52 GHz, middle band), and 150 MHz (1.78-1.93 GHz, upper band), which can cover GSM 900 MHz, GPS 1,500 MHz, DCS 1,800 MHz, PCS 1,900 MHz, and GSM 1,900 MHz bands. Moreover, the proposed antenna produces lower SAR values in the human head than that of a dipole and helical antenna.

Simulation of Rectangular Microstrip Patch Antenna u sing ANSYS

“…Meander lines help in reducing the size of the antenna and in also reducing SAR of the antenna [9]. Patch antennas with low SAR are designed and simulated by etching meander lines [10,11]. Patch antenna with low SAR is proposed in [12,13].…”

SAR Calculations of Novel Dual-band PIFA for Mobile Phone Applications

“…We take into consideration the permittivity and conductivity of human tissues which are frequency determined parameters [16], and the respective values are constructed on human tissue measurement data as labeled in [17][18]. Table 1 indicates the insulator properties of head and hand phantom for dissimilar frequencies.…”