Design of pattern reconfigurable antenna for 5th generation handheld device

تاریخ : جولائی ۲۰۱۷ - جنوری ۱۹۷۰

The recent wireless communication systems tend to be high-capacious, multifunctional and cover more frequency bands. Therefore, the quantity of the antenna is becoming larger and larger. This will lead to large communication system equipment, increased costs, and electromagnetic compatibility problems. One of the biggest challenge in modern communication systems is to provide a single antenna for different applications. So, it is important to design a single reconfigurable antenna for multiple applications. The main target of the thesis work is designing antenna with various features and characteristic particularly pattern reconfigurability. Reconfigurability is the capacity to change an individual radiation’s, fundamentals operating characteristic through electrical or mechanical switches. This thesis present three different design of pattern reconfigurable antenna for 5th generation handheld devices. The first design is star shape microstrip patch antenna which radiate radiation pattern in different direction by using four switches. These switches are located in between pentagonal shape central patch and triangular shape wings. The antenna can reconfigure radiation pattern to operate in one of 6th different radiation pattern. The antenna return loss, radiation pattern and gain or directivity was simulated using CST microwave studio. This simulation results showed gain or directivity greater than 4.5 dBi for all the reconfigurable pattern and the return loss was also below than -25 dB