Research
Design and Fabrication of Miniaturized Dual-Band Antenna using Split-ring and Defected Ground Structure for ISM Band Applications
In this paper the design and fabrication of a miniaturized dual band antenna using split ring and modified ground structure for the application of ISM band has been presented. The designed antenna consists of number of slots on patch which forms a split ring, one substrate layer and a common ground plane which is modified accordingly to obtain the desired resonant frequency. The proposed configuration gives a general size diminishment by doing modification in the ground plane. Due to modified ground, efficiency of an antenna is increased. The proposed antenna is designed to operate at 2.45GHz and 5.8GHz. It achieves a return loss of - 34.6dB at 2.45GHz and -38.1dB at 5.8GHz. Proposed Antenna has many practical applications like in ISM, WIFI, commercial business, Bluetooth, cordless phone. Voice, video and data communication also uses this frequency band. It is designed with the help of CST microwave studio 2011 software. Same antenna is fabricated and testing has been done. In this paper we have shown the comparison of simulated results and experimental results.
Design and Simulation of Microstrip Patch Antenna for C-Band Communication Services
When a fewer number of microstrip antennas are to be used for the transmission and reception of electromagnetic signals in a system, the size of the antenna array becomes a critical issue to deal with. Instead of using a number of antennas, we can use the desired number of patch antennas over a single substrate only. Main motive is to maintain the coupling suppressing sectional structure in simple manner, whilst providing a higher amount of efficiency in coupling of microstrip patch elements/antennas. At microwave frequency, the microstrip is often used as a transmission line because of its very good efficiency in transferring energy/microwave signals. In this work, an antenna design is simulated at 4.8 GHZ for its working in the C-Band communication services.
