A Circular Stacked Patch Antenna Designed For Ku Band Satellite Applications

Abstract

A Circular stacked stratum patch antenna is introduced in 15 GHz Ku band (12 –18 GHz) for all satellite communications. The antenna is constructed with four aluminium disks with DGS (defective ground structure). DGS is used in antennas for satellite communication systems to improve bandwidth and gain, especially in Ku-band applications. The return loss of -14 dB and realized gain of 5.01 dB is achieved in the measured and simulated response at a frequency of 15 GHz and the prototype also fulfils the target Ku band application requirement. Antenna designed in 5.01dB gain is used for Very Small Aperture Terminal setup for providing broadband internet in rural areas, where traditional infrastructure like cable isn't present. Geographical constraints, low population density and the high cost of deployment often make cabling impractical in these instances, and herein lies the role of VSAT systems dependent on a powerful Ku-band antenna. Such systems are able to electrically close the gap that separates these areas from access to reliable satellite-based broadband services.