A small-size zeroth-order resonating antenna based on a composite right/left-handed transmission line (CRLH TL) fabricated high resistivity silicon substrate using coplanar waveguides (CPW) is proposed. The CRLH TL consists of series CPW interdigital capacitors and parallel short-ended CPWs. predicted experimental results for return loss, gain radiation pattern are in very good agreement.

Using genetic algorithms, an original method for MEMS optimization is proposed in This work. The optimized device should provide both minimum switching time and equivalent capacitance, so the highest operating frequency obtained. By analyzing results obtained on different voltage geometrical configurations, it important to mention that by using GA, behavior good agreement with expected classical means.

A new topology of small size ring coupler is proposed. It consists fully distributed balanced CRLH (Composite Right/Left-Handed) based phase shifters, designed for a frequency which significantly greater than the operating frequency. Firstly, equivalent circuit consisting ideal transmission lines chosen at 1.8 GHz, and then this analysed numerically. The layout also numerically using 3D electromagnetic simulator. proposed has about 50% smaller area comparing to conventional configuration,...

A topology for a 3-dB broadband and small-size ring coupler is designed numerically analyzed. It consists of fully-distributed Composite Right-/Left-Handed phase shifters Lange coupler. The frequency bandwidth one octave centered on 1.5 GHz. area occupied by the 25% conventional topology. has been fabricated it ready experimental characterization.

A microwave oscillator topology based on CRLH (Composite Right-/Left-Handed) unit cells is analyzed theoretically and experimentally tested. The consists of a distributed amplifier positive feedback realized by simple transmission line. has two output ports, where the power levels are practically same. For this topology, we have found oscillation condition demonstrate that each transistor gives same contribution to delivered at in way, maximized. been designed for frequency 2.8 GHz...

Abstract The aim of this paper is to describe the results obtained by experimenting with a Composite Right/Left Handed Co Planar Waveguide (CRLH CPW) zeroth-order resonating antenna on ferrite substrate magnetically biased DC magnetic field. CRLH structure consists series connected CPW interdigital capacitors and parallel ground transmission lines as inductors form an working at frequency 13,350 GHz. for has saturation magnetization 550 G, dielectric constant 13.5 resonance linewidth 16.8...

The aim of this paper is to present results obtained in modeling, technological realization and measurements for a CPW (CoPlanar Waveguide) zeroth-order resonating antenna, based on CRLH (composite right/left-handed) transmission line. consists series connected interdigital capacitors two parallel lines. antenna was fabricated silicon substrate subsequent integration more complex circuit. A very good agreement between the experimental simulation has been observed return-loss as well...

A topology for a 3-dB broadband and small-size ring coupler is proposed.It consists of fully-distributed Composite Right-/Left-Handed phase shifters Lange coupler.For the fabricated coupler, frequency bandwidth one octave, centered on 1.5 GHz, while footprint area reduced to 25%, compared conventional topology.The experimental results are in good agreement with expected ones, obtained by electromagnetic simulation.

A new method to design a miniaturized ring coupler consisting of multiple open stubs on the inside is proposed. It shown that this topology may be seen as fully-distributed composite right/left handed (CRLH) small-size phase shifters, cascaded in conflguration. The CRLH shifter analyzed detail and proposed, pointing out condition obtain reduction its length. Using fully- distributed based shifter, conflgured comparison with traditional coupler, showing both couplers have similar...

Summary form only given. In the above-named work [ibid., vol. 60, no. 7, pp. 2073,2084, Jul. 2012], problem of impedance matching using one transmission line characteristic Z <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">c</sub> and electrical length θ, inserted between two impedances, xmlns:xlink="http://www.w3.org/1999/xlink">L</sub> = R + jX xmlns:xlink="http://www.w3.org/1999/xlink">S</sub> , is analyzed. same paper, allowed regions for...

A new method to design a small-size ring coupler is proposed, showing that the may be seen as consisting of fully distributed composite right/left-handed phase shifters. 3 dB designed by using proposed method. The analysed numerically and then experimentally characterised. It shown experimental results are in very good agreement with expected ones. For fabricated coupler, area reduction about 50%, compared conventional coupler.

Several coplanar waveguide series stubs and filter structures based on such were designed manufactured standard semiinsulating GaAs substrates thin membranes as well silicon dielectric membranes. Coplanar circuits realized offer significant advantages over conventional or microstrip lines for monolithic hybrid MIC applications.

This paper presents the results in modeling, technological realization and measurements of a zeroth- order resonating antenna based on CRLH (composite right/left-handed) transmission lines. The consists series connected CPW interdigital capacitors parallel studied devices were fabricated silicon substrate for subsequent integration more complex circuit. A very good agreement between simulation data experimental has been found out 10 - 14 GHz frequency domain.

An oscillator based on distributed amplifier realized by using CRLH (Composite Right-/Left-Handed) unit cells is designed and experimentally validated. The positive feedback consists of a transmission line which connects the input port drain idle amplifier. remaining two ports are output ports. For this topology, transistors give same contribution to power. measured powers at equal 12.6 dBm 10.4 dBm. experimental frequency oscillation 2.77 GHz, difference compared simulated value being less than 1%.

Coupled-line directional coupler based on CRLH (Composite Right/Left-Handed) cascaded structures is designed, analyzed and then fabricated. The technological realization of the involves one mask process silicon substrate, using CPWs (CoPlanar Waveguides). preliminary measurements were also performed, showing that experimental results fit well simulation results.

This paper presents the results in frequency tuning of a ferrite supported resonating CPW antenna based on CRLH (composite right/left-handed) transmission lines. The is obtained by magnetically polarizing substrate with magnetic biasing field variable between 0 T and 0.26 T. Data simulation suitable microwave software indicate shift 530 MHz at working 12.88 GHz, very good agreement experimental showing 450 MHz.

In this paper, some aspects regarding the mechanical as well electrical modeling of MEMS switch, are presented. A general formula for spring constant is proposed, in order to take into consideration real distribution electrostatic force along bridge MEMS. This may be used a better analysis, but also analysis switch. The influence value applied voltage on numerically analyzed, two geometries device. Also, switch consisting an array switches presented, estimate effect series inductance.

The paper presents the results concerning radiation characteristic scanning of a ferrite supported resonating CPW antenna based on CRLH (Composite Right / Left-Handed) transmission lines. effect is obtained by magnetically polarizing substrate. Data simulation with suitable microwave software indicate an azimuthal deviation ± 9.78 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sup> at working frequency f = 13 GHz for variable magnetic...

This paper presents the design and manufacturing of a metamaterial Composite Right/Left Handed (CRLH) directional coupler on silicon substrate in coplanar waveguide (CPW) configuration, with frequency band between 26-28 GHz. The makes use 4 CRLH cells, cascaded coupled two by order to obtain structure. device was processed 500μm thick Au/Cr metallization purpose easy integration more complex millimeter wave integrated circuits. measurement working frequency, reflection loss isolation...

The paper deals with the radiation characteristic scanning of a ferrite supported resonating CPW antenna based on CRLH (Composite Right/Left-Handed) transmission lines. effect is obtained by magnetically polarizing substrate magnetic biasing field which varies between 0 T and 0.16 T. Data simulation suitable microwave software indicate an azimuthally deviation ± 9.87° at working frequency 13 GHz, in very good agreement experimental results showing 10°.