Background:
The Planar Inverted-F Antenna (PIFA) is most widely used for wireless
communication applications due to its unique properties as low Specific Absorption Rate, low
profile geometry and easy fabrication. In literature a number of multiband PIFA designs are
available that support various wireless applications in mobile communication, satellite
communication and radio frequency field.
Methods:
In this paper, a miniature sized planar inverted-F antenna has been proposed for dual-band
operation. The antenna consists of an asymmetrical pentagonal shaped patch over an FR4 substrate.
The overall antenna dimension is 10 × 10 × 3 mm3 and resonates at 5.7 GHz frequency. A
modification is done in the patch structure by introducing an asymmetrical pentagon slot.
Results:
The proposed pentagonal antenna resonates at 5.7 GHz frequency. Further, modified
antenna resonates at two bands. The lower band resonates at 5 GHz and having a bandwidth of 1.5
GHz. This band corresponds to C-band, which is suitable for satellite communication. The upper
band is at 7.9 GHz with a bandwidth of 500 MHz. Performance parameters such as return loss,
VSWR, input impedance and radiation pattern are obtained and analysed using ANSYS High-
Frequency Structure Simulator. The radiation patterns obtained are directional, which are suitable
for mobile communication.
Conclusion:
The antenna is compact in size and suitable for radar, satellite and vehicular
communication.
