Low weight ii. Inexpensive iii. Easily manufactured iv. Low volume v. Low profile planar configuration that can be easily made conformal to the host surface vi. Capable of dual and triple frequency operations with integrated circuitsDisadvantages of Microstrip AntennaMicrostrip patch antennas suffer from a number of disadvantages compared to conventional antennas. I. Inherently narrow bandwidth ii. Low efficiency iii. Inherently low gain iv. Low power handling capability compared to surface wave excitation Table 2 shows the properties of different substrates for microstrip patch antenna design S/n Parameter Bakelite FR4 RO4003 Taconic RT Duriod1 Dielectric constant 4.78 4. 36 3.4 3.2 2.22 Loss tangent 0.03045 0.013 0.002 0.002 0.00043 Water absorption 0.5-1. 3% Peel strength 60kv8 - 9N/nm 1.05N/nm 12N/nm