A broadband printed bow-tie antenna with a simplified balanced feeding network and modified tapering is presented. Microstrip and parallel-strip transmission lines printed on the substrate with high dielectric permittivity realize the proposed feeding network. The ground-plane transition between the microstrip line and the parallel-strip line is exponentially tapered so as to reduce the reflect...

In this work, we are interesting in the analysis and the design of an ultra wideband (UWB) band pass filter with improved upper stop band performances, using microstrip lines. The design of the UWB band pass filter is based on the use of stepped-impedance low pass filter and high pass filter; whereas the simulation of its frequency response ([S]) is done using MATPAR software and it is based on...

Substrate Integrated Waveguides (SIW) are used for transmission of Electromagnetic waves. They are planar structures belonging to the family of Substrate Integrated Circuits. Because of their planar nature, they can be fabricated on planar circuits like Printed Circuit Boards (PCB) and can be integrated with other planar transmission lines like microstrips. They retain the low loss property of ...

The embedded meander line in stepped-impedance resonator (SIR) is proposed to design narrow bandpass filter with a good stopband characteristics. The design differs from the general SIR configuration in that the microstrip lines are bent at the location of the maximum magnetic field density. As a result, the resonators have high external quality factors by themselves, since the factor is closel...

In this paper, a 4 × 4 Butler matrix (BM) switched-beam patch antenna array is designed and discussed. The design is developed on a single layer of Rogers material; RO 5880 with dielectric constant 2.2 and thickness 0.254mm.This makes the designed antenna low cost and easy of fabrication. The four rectangular patches fed by inset microstrip lines are connected to the outputs of the BM. The resu...

This paper presents the first 150GHz amplifier in a digital 65nm CMOS technology. Design techniques to preserve raw transistor gain near fmax include layout optimization, dummy-prefilled microstrip lines (MSL) for design-rule compliance, and matching topologies which minimize passive element losses. To the authors’ knowledge, the measured 8.3dB gain, 6.3dBm saturated output power (Psat), 1.5dBm...

This paper reports different strategies for electrical dispersion compensation of optical single sideband transmission systems. We investigate and compare the mitigation of the chromatic dispersion impairment using dispersive microstrip lines, Butterworth filters, and hybrid schemes employing an adaptive filter. Simulation results are presented at 10 Gbit/s, proving transmission over 600km of d...