- Microwave Engineering and Waveguides
- Advanced Antenna and Metasurface Technologies
- Electromagnetic Compatibility and Noise Suppression
- Radio Frequency Integrated Circuit Design
- Antenna Design and Analysis
- Plasmonic and Surface Plasmon Research
- Photonic and Optical Devices
- Full-Duplex Wireless Communications
- Acoustic Wave Resonator Technologies
- Gyrotron and Vacuum Electronics Research
- Analytical Chemistry and Sensors
- Semiconductor Lasers and Optical Devices
- Photonic Crystals and Applications
- Optical Coatings and Gratings
- Metamaterials and Metasurfaces Applications
University of Alberta
2025
Shahid Bahonar University of Kerman
2015-2023
A four-way filtering power divider (PD) based on a substrate-integrated waveguide (SIW) is presented. This structure composed of two layers the dielectric substrate. The eighth-mode SIW (EMSIW) technique used to make four cavities in upper In addition, an cavity provided lower To achieve efficient transition between layers, rectangular slots are etched middle metal planes. circular slot top layer EMSIW suppress higher operating modes. prove validity, PD with second-order bandpass response...
A miniaturised equal/unequal substrate integrated waveguide power divider with bandpass filtering response loaded by complementary split‐ring resonators (CSRRs) is proposed. The proposed structure based on the theory of evanescent mode propagation. use CSRRs enables function and able to reduce its size. By changing orientations CSRRs, dividers are achieved. In unequal divider, ratio can be arbitrarily controlled carefully tuning parameters locations output ports. Three samples division...
Design and realisation of a compact power divider based on half mode substrate integrated waveguide (HMSIW) with an arbitrary dividing ratio is presented. This design consists (SIW) transition, two bisected HMSIW transitions by gap, SIW-to-microstrip microstrip feed lines. In addition, resistor attached between transitions. To adjust the division ratio, four parameters are introduced. Furthermore, graphs plotted using three-dimensional electronmagnetic (3D EM) simulator to graphically...
A novel super compact filter based on half-mode substrate-integrated waveguide (HMSIW) technology loaded by the modified complementary split-ring resonator (MCSRR) is proposed. The working principle of proposed evanescent-mode propagation technique. According to this technique, loading (CSRR) metal surface (SIW) structure, an additional passband below SIW cutoff frequency can be obtained. In order miniaturize physical size conventional CSRR, a new method introduced. MCSRR unit-cell, meander...
A miniaturized substrate-integrated waveguide (SIW) power divider with embedded filter response and arbitrary power-dividing ratio loaded by open complementary split-ring resonators (OCSRRs) is presented. In the proposed divider, miniaturization filtering are realized a pair of OCSRRs, which etched on metal cover SIW structure. The design procedure indicates that division can be adjusted changing locations output ports. this study, three dividers different ratios (1:1, 1:4, 1:8) implemented...
This paper presents a C-band filtering power divider (FPD) based on hybrid of spoof surface plasmon polariton (SSPP) and half-mode substrate integrated waveguide (HMSIW). The proposed circuit is designed by etching subwavelength corrugated grooves in the HMSIW upper wall has both characteristics SSPP structures. It can create bandpass response reduce transverse longitudinal dimensions structure nearly 50%. dispersion transmission HMSIW-SSPP line are analyzed. lower edges passband be adjusted...
In this paper, two ultracompact power dividers based on the substrate integrated waveguide (SIW) and half-mode SIW (HMSIW) technologies loaded by complementary split-ring resonators (CSRRs) are presented. The presented structures designed theory of evanescent mode propagation. To obtain a size reduction, CSRR unit cells etched metallic surface HMSIW structures. First, two-way divider is reported. circuit, concept utilized aiming at further reduction in addition to cells. Then, four-way so...
Abstract This paper proposes a wideband compact equal-length phase shifter based on the hybrid half-mode substrate integrated waveguide (HMSIW) and spoof surface plasmon polariton (SSPP) concept for first time. The HMSIW transmission lines (TLs) with different widths result in propagation constants. difference of constants between two TLs decreases as frequency increases. Therefore, cannot be designed by using this technique. In paper, series half-butterfly grooves are etched top conductor...
Abstract In this article, a compact single‐layer filtering power divider based on third‐mode circular substrate integrated waveguide (SIW) cavities is proposed. The SIW technique introduced to divide an cavity into three and get 66% size reduction. proposed composed of within circuit with the cavity. coupled from input two output through electric coupling, separately. To achieve more reduction, designed are corrugated along cutting planes. By increasing length edges, center frequency can be...
Abstract A filtering power divider based on air‐filled substrate‐integrated waveguide (AFSIW) technology is proposed in this study. The AFSIW structure used the for substantially reducing transmission losses. This occupies a large area because of use air as dielectric instead typical materials. provides division and frequency selectivity simultaneously single device. comprises three cavities. function achieved using symmetrical inductive posts. input output ports circuit are realized by...
A power divider/combiner using half-mode substrate integrated waveguide (HMSIW) and microstrip transmission lines with high isolation for high-power applications is presented. The design consists of a planar cavity, two 90° lines, matched loads, one 180° line. cavity fabricated HMSIW structure excited the TE101 mode at centre frequency 4.875 GHz. external loads are added to improve between output ports. Moreover, prevent appeared heat loss in substrate. circuit behaviour analysed based on...
In this paper, a four-way dual-band Gysel power divider (GPD)/combiner based on back-to-back microstrip structure method is proposed and investigated. A two-layer substrate adopted to implement PD. order divide the input signal into four equivalent signals, output ports of PD are placed top external isolation resistors bottom layer substrate. Furthermore, response achieved by adding short-circuit stub an open-circuit structure. Then, theoretical closed-form design formulas derived considered...
This Letter introduces a low-loss and broadband coaxial line to air-filled substrate integrated waveguide (AFSIW) transition for the first time. The fabrication of this involves three layers. inner conductor is connected metal layer lower its outer upper substrate. uses taper-shaped configuration at end achieve better impedance matching wider bandwidth. In previously reported AFSIW components, several transitions are used transform transverse electromagnetic mode TE structure. By using...
A four-way power divider/power combiner using substrate integrated waveguide (SIW) and microstrip lines is proposed investigated. The divider consists of a double-layer with bottom layer including an SIW T-junction top network. This network modified Gysel which provides high isolation between output ports by two grounded resistors. Meanwhile, this maintains power-handling advantage over Wilkinson divider. transition the realized etching rectangular slots on middle metal layer. even-odd mode...
In this paper, a compact filtering power divider (PD) based on half mode substrate integrated waveguide (HMSIW) is presented. The proposed structure realized by etching slots the top layer of HMSIW PD. Accordingly, two resonators are embedded in each patch, as second order filter. dimensions obtained relationship between them and extracted external quality factor coupling coefficient. A good agreement simulated measured results reported. 3 dB fractional bandwidth 25% (6.3-8.1 GHz). maximum...