Design and performance analysis of a dual band parabolic reflector antenna with Waveguide Dipole Feed and link budget optimization

With the change of era new technologies are getting familiarity in the field of mobile satellite communications which demand the development of very small size, low-cost, low-profile, high gain and high directivity antennas. The design of a mobile satellite communication antenna named as Dual Band Parabolic Reflector Antenna with Waveguide Dipole Feed and link budget optimization of the proposed antenna system are illustrated in this paper. The proposed antenna has a gain of 29.76dB, directivity of 30.04dBi, return loss value of -18.414542dB, Voltage Standing Wave Ratio (VSWR) of 1.2726, bandwidth of 318MHz at C-band and 604MHz at X-band, antenna efficiency of 93.82% and 3dB angular beamwidth i.e., the Half Power Beamwidth (HPBW) of 5.1deg. The resonant frequencies of the antenna are 6.912GHz and 11.307GHz. The proposed antenna system can be used for both C-band and X-band applications like satellite communications transmissions, Wi-Fi, cordless telephones, weather radar systems, medical applications and other wireless systems. The antenna system is designed and simulated in the CST Microwave Studio. Link budget optimization is performed in order to analyze the critical factors in the transmission chain and to optimize the performance characteristics. The link budget determines what size antenna is to use, power requirements and in general, the overall customer satisfaction.