In this paper, we proposed a novel design of U-slotted SIW antenna. Our antenna is aimed to cover upper K-band and lower Ka-band spectrums, specifically from 24 GHz 32 GHz. It has compact square size 5.2 x mm 2 . We use rectangular truncated corner optimize the radiator. The optimized 0.8 gives an impedance bandwidth 7.87 cavity constructed by using multiple metallic via-holes which are drilled...

In this paper, a cruciform coupler with half mode substrate integrated waveguide structure is presented. The prototype coupler consists of four half mode SIW structures crossing each other in right angle and two metallic posts are inserted in free section of junction in order to reach the coupling properties. Compact size and broadband operation are the features of this coupler. The size of cou...

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...

In the paper, wideband antenna arrays aimed at microwave imaging applications and SAR applications operating at Ka band were designed. The antenna array feeding network is realized by a low-loss SIW technology. Moreover, we have replaced the large feed network comprised of various T and Y junctions by a simple broadband network of compact size to more reduce losses in the substrate integrated w...

This paper presents an effective and novel design procedure employing a novelty named as Perturbation Factor to predict the resonance frequency of resonant cavities in SIW technology perturbed by shape perturbation. The can be applied tunable bandpass filters with shunt reactance symmetrical inductive window, regarding application technologies, rectangular waveguide resonators employed due equi...