A MICROSTRIPPATCH ANTENNA SANDWICHED BETWEEN THE SUBSTRATE INTEGRATED WAVEGUIDE AND A SUBSTRATE FOR DUAL FREQUENCY BAND APPLICATIONS (SHF AND EHF)

Mobile technologies have changed the way we live in the modern-day society and manage many aspects of our daily affairs. The need for the broadband and dual band frequencies has increased to cope up with the ever-increasing latter-day requirements. This paper proposes and discusses the design and the simulation results of a microstrip patch antenna at both Super high frequency and Extremely high frequency using the substrate integrated waveguide and the relation between the frequencies and bandwidth are observed. The radiating element is the rectangular patch antenna fed by aperture coupled feeding technique. Substrate integrated waveguide antennas take the advantages of both classical metallic waveguide, which includes high gain, high power capacity, low cross polarization, and high selectivity, and that of planar antennas which comprises low profile, light weight, low fabrication cost, conformability to planar or bent surfaces, and easy integration with planar circuits. In this paper an attempt is made to design microstrip antenna at these frequencies using SIW methodology and aperture feeding technique.