Indian Journal of Forensic Medicine & Toxicology

The proposed design makes antenna work in different frequencies. The antenna produce better gain and efficiency compared to conventional antennas. The conventional antenna transmits data between sender and receiver with single frequency, but the proposed antenna overcomes the problem by transmitting the different frequencies using the single antenna. Conventional antenna uses multiple antennas for different frequencies like WiMAX(Worldwide Interoperability for Microwave Access) applicatons. The design of the antenna radiator which is used to generate three frequency bands with the frequencies of 1.57, 2.45 and 3.54 GHz for WiMAX applications. Here the radiating branch is responsible for the higher band selected for tuning. The stub connected with the antenna to design the planar structure to have the Tri-band frequencies, which produce the high gain and low return loss. It has the current distribution and voltage parameters synchronized with the measured result. The Results proves that the higher band can be continuously tuned in frequency where the lower band unchanged for different frequencies. The reflection coefficient, radiation pattern, VSWR and efficiency of the antenna are studied using ADS simulation and measurement using vector analyzer.