Herein, a rigorous derivation of an isosceles right-angled triangular (IRT) metallic cavity is analysed. Then, the transverse field components in IRT substrate-integrated waveguide (SIW) are derived, and expression resonant frequencies can also be obtained. novel perturbed SIW proposed, which based on characteristics modes capacitive-loading technique. Three prototypes were designed to verify v...

This article presents the methodology to design a single-fed circularly-polarized antenna with low front-to-back ratio (FBR). A circular-patch (CPatch) has been incorporated within rectangular-cavity, made of, substrate integrated waveguide (SIW). The size of CPatch and SIW cavity chosen appropriately, in manner, that both resonators dominant mode coincide. arrangement adopted realize basic rad...

In this paper, linearly and circularly polarized single-layer Substrate Integrated Waveguide (SIW) horn antennas with nearly equal half power beamwidths in principal planes for the 24 GHz ISM band are designed. The uniqueness of solution lies application a pixelated structure to design these SIW antennas. For design, novel heuristic algorithm called Binary Ink Stamp Optimization is proposed. At...

An analog, low-profile and shielded spectrum analyzer is proposed for operation at mm-wave frequencies around the 60 GHz band based on a novel side-fire Leaky-Wave Antenna (LWA) configuration. The periodic LWA systematically developed from conventional 3-port waveguide T-junction which modified to unit cell with an internal matching mechanism suppress stop-band enable broadside radiation symmet...

Substrate integrated waveguides (SIWs) have been proposed and applied to develop a two-way out-ofphase power divider in this paper. This newly proposed structure shows good performance in wide frequency range from 8.6 GHz to 10.6 GHz. The proposed multilayer SIW out-of phase power divider consists of two layer of substrates of Rogers 5880 with thickness of 0.508 millimeters. The input at the up...

In this paper, an endfire dual-polarized phased array is introduced for 5G mobile applications, which operates from 26 GHz to 30 with low profile of only 1.1 mm ( ${\bf 0.1\lambda _0}$ at GHz) and small clearance 3.5 mm. The consists in...

A planar millimeter-wave third-harmonic mixer with low conversion loss is proposed. The mixing circuit consists of a substrate-integrated waveguide (SIW) balun, a pair of diodes, a diplexer and microstrip matching circuit. The mixer is ideal for use as down-converter and up-converter. For a fixed intermediate frequency (IF) of 2 GHz, the mixer has an up-conversion loss of 14.5-15.6 dB and a dow...

This paper presents a cavity-backed antenna array in substrate integrated waveguide (SIW) technology the millimeter-wave frequency band. The proposed design uses double slots as radiating elements instead of conventional single slots. allow better control operating bands antenna. performance antennas with and is compared to assess enhanced behavior As proof concept, 2 × designed, manufactured, ...

In this letter, a planar cavity-backed multiplexing antenna (SMA) is proposed and validated experimentally. A cavity realized by using novel transmission line known as substrate-integrated waveguide (SIW) technology. The design comprises five SIW cavities each one consisting of slot for launching the energy in free space. Three different types slots are employed lower mutual coupling compact ci...

This paper presents a filtering power divider (PD)/power combiner (PC) using substrate integrated waveguide (SIW)-based 180 hybrid. The utilized 180 hybrid includes a standard H-plane 3-dB coupler and a broadband 90 phase shifter. The phase shifter is composed of non-radiating longitudinal slots patterned on the top conducting surface of the SIW. We have added the filtering property to the stru...