Substrate integrated waveguide (SIW) is a new form of transmission line. It facilitates the realization of nonplanar (waveguide based) circuits into planar form for easy integration with other planar (microstrip) circuits and systems. This paper describes the design of an SIW to microstrip transition. The transition is broadband covering the frequency range of 8 – 12GHz. The measured in-band in...

─ A novel ultra-wideband (UWB) out-ofphase four-way power divider is presented. To achieve a division over a large frequency range, Tjunctions formed by slotlines and microstrip lines are utilized. Based on the transmission-line equivalent-circuit method, we derive the design equations of the proposed power divider. Furthermore, all measured results are in good agreement with the predicted desi...

In this paper, a microstrip transmission line combined with a new U-headed dumb-bell defected ground structure (DGS) is investigated. The proposed DGS of two U-shape slots connected by a thin transverse slot is placed in the ground plane of a microstrip line. A finite cutoff frequency and attenuation pole is observed and thus, the equivalent circuit of the DGS unit can be represented by a paral...

A planar magnetoinductive (MI) waveguide loaded rectangular microstrip patch antenna is presented and discussed. The MI waveguide consists of two planar metamaterial split squared ring resonators (SSRRs) placed in between two microstrip lines. The backward wave propagation takes place through this structure. The rectangular microstrip patch antenna is magnetically coupled to the MI waveguide. T...

A central tracker based on silicon microstrip sensors has been envisaged for the e + e − linear collider experiments. A full simulation program based on GEANT4 has been developed to study performance of the tracker. We report some preliminary results obtained using this program. The use of silicon microstrip detectors as precise tracking devices in colliding-beam experiments has been well estab...

Abstract—In this work, a millimeter wave microstrip frequency-mixer design based on graphene is presented. The desired frequency mixing behavior is obtained using a nonlinear component consisting in a microstrip line gap covered by a graphene layer. The circuit includes microstrip filters that have been designed to obtain a high isolation between the input and output ports. The nonlinear behavi...

This paper has presented the characteristic impedance and signal propagation delay time for both surface and embedded microstrip lines that comprise a conducting strip line with width w, thickness t of conductivity σ, on a substrate of thickness h, relative permittivity εr, relative permeability sub, on top of an infinite grounded electrode. The strips couples to the ground plane. It is observ...

the design of microstrip antenna for improved bandwidth and directive gain is a challenge for researchers. This paper proposes the design of a Microstrip Square-Patch antenna with enhanced Bandwidth and Directive Gain. The design and simulation of this antenna has been done with the help of Ansoft HFSS. The simulated results give significant improvement in terms of directive gain and bandwidth....

A microstrip patch antenna for WLAN application is proposed. The antenna has a frequency bandwidth of 196 MHz (5103MHz 5300 MHz). The microstrip antenna has a planar geometry and consists of a ground, a substrate, a patch and a feed. The basic theory and design are analyzed, and simulation using CST Microwave Studio commercial software is employed to optimize the antenna's properties. Results s...