Design & Analysis of Frequency Reconfigurable Microstrip Patch Antenna for Ku/K Bands Applications using Pin Diode

In the growing era of communication there is a need for frequency reconfigurable antenna which helps in deduction of antenna dimensions by considering the higher permittivity of the substrate. The need for frequency reconfigurable antenna is that, it able to change its frequency dynamically by the use of switching mechanism. The proposed antenna is fabricated using FR4 substrate having a thickness of 1.6mm. By configuring the P-I-N diode, two operating frequencies are obtained. This design can be switch between two operating frequencies 14.9GHz, bandwidth (800MHz) and 25.5GHz, bandwidth (1400MHz) in the case of diode ON and OFF conditions. The performance of the antenna is analysed at higher frequencies especially Ku and K bands due to the impact of PIN diode with two switch configuration is analysed. The proposed antenna is good for Ku and K band applications. Ku band is reserved for high power satellites intend for delivery of digital signal and mostly applicable for Direct Broadcast Satellite (DBS). K band is applicable for satellite communication and weather report. The antenna is simulated using ANSYS HFSS software.