Improvement in Planar Array Antenna Performance by Using Center-fed Coaxial-to-SIW Transition and UC-EBG Structure for 60GHz Wireless Communication
نویسندگان
چکیده
Improving antenna performance is an important topic in antenna design. This paper proposes an improved planar array antenna to achieve proper input impedance matching and suppress the undesired surface waves by utilizing a new center-fed coaxial-to-SIW transition and a uniplanar electromagnetic band-gap (UC-EBG) structure. A proposed center coaxial feed is used in substrate integrated waveguide (SIW) transition line in order to employ millimeter wave (MMW) 2×2 planar microstrip patch antenna (MPA) array in 60 GHz center frequency and about 900MHz impedance bandwidth with return loss less than −10 dB. The results are obtained by applying FDTD numerical electromagnetic method in CST simulation software. Also, according to these results, also the gain and side lob level are slightly better than conventional one because of surface waves suppression properties in UC-EBG structures.
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