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...

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 ...

In this paper, we present an Yb-doped Y2O3 waveguide laser fabricated by pulsed laser deposition (PLD) that is Q-switched using a mono-layer graphene saturable absorber. 140 ns pulses at a repetition rate of 1.21 MHz and pulse energy of 14 nJ are achieved at an absorbed pump power of 528 mW. Introduction: Pulsed lasers have a range of applications in areas such as medicine, material processing,...

In this letter, a half-mode waveguide based on gap (GW) technology for rapid prototyping is explored. Two devices have been designed and measured demonstration purposes: power divider curved waveguide. Both are constructed from two noncontacting metal pieces. also follow the same design process. bottom piece, horizontally polarized groove GW (GGW) housed. The height of about half, which require...

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 ...

A four-way power divider/power combiner using substrate integrated waveguide (SIW) and microstrip lines is proposed and investigated. The proposed power divider consists of a double-layer substrate with a bottom layer including an SIW T-junction and a top layer including a microstrip network. This microstrip network consists of a modified Gysel power divider which provides a high isolation betw...

We demonstrate that in a hybrid plasmonic system the optical force exerted on a dielectric waveguide by a metallic substrate is enhanced by more than 1 order of magnitude compared to the force between a photonic waveguide and a dielectric substrate. A nanoscale gap between the dielectric waveguide and the metallic substrate leads to deep subwavelength optical energy confinement with ultralow mo...