A wideband circularly polarized antenna based on the substrate integrated waveguide (SIW) is investigated and presented for mobile satellite applications. Initially, a rectangular-slot etched top layer of SIW cavity. truncated patch from one corner (top left) loaded inside slot to obtain two pairs orthogonal degenerate modes TE130/TE310 TE230/TE320. This truncated-corner helps bring closer circ...

In this paper, a dual-polarized antenna based on substrate-integrated waveguide (SIW) horn and Vivaldi is proposed. The horizontal polarization (HP) achieved by using the H-plane SIW antenna, while vertical (VP) realized typical etched surface of antenna. front aperture, dielectric lens designed to optimize impedance matching enhance directivity. Different feeding structures two polarizations a...

In this paper, the power dissipated through different loss mechanisms including dielectric, conductor and radiation loss is calculated for the substrate integrated waveguide (SIW) and modified substrate integrated waveguide (MSIW). The applied computational method being appropriate for structures with periodic conducting parts allows one to calculate the integrals corresponding to these powers ...

A novel method of using bypass coupling SICC resonator to generate transmission zeros in filter stopband to improve stopband attenuation is presented. A SIW quasi-elliptic function filter for Satellite Communication application with bypass coupling SICC resonator is designed and fabricated to validate the method. The results show that the method is effective on improving the filter stopband per...

A novel compact diplexer based on mixed-mode isosceles right triangular (IRT) substrate integrated waveguide (SIW) cavities is presented. dual-mode IRT SIW junction cavity direct-coupled with two single-mode for lower and upper channels, respectively. The has third-order filtering centred at 16 18.3 GHz 400 422 MHz bandwidths. in-band measured return insertion losses are 19 dB/1.3 dB in the ban...

A novel substrate integrated waveguide (SIW) adopting a leaky-wave antenna (LWA) for continuous beam scanning tri bands is presented. For (CBS), optimization of different parameters associated with the unit cell has been carried out. Apart from this, optimal impedance matching also obtained help characteristic waveguide. The proposed SIW LWA scans ?58° to + 59° along 14.50 dBi gain when frequen...

In this brief, a wide stopband bandpass filter is designed based on the substrate integrated waveguide (SIW) coupling with complementary split ring resonators (CSRRs) and defect ground structure resonators. The proposed exhibits excellent roll-off characteristics single SIW resonator cavity. A simple capacitive slot line also to improve flatness in passband. order verify feasibility of scheme, ...

In this paper, empirical relations for the evaluation of both the resonant frequency fr and the quality factor Q for the dominant TM010 mode of a circular substrate integrated waveguide (SIW) cavity resonator are proposed and validated. These formulas are based on well established analytical expressions valid for the case of circular metallic cavity resonator, in which an equivalent radius Req ...