نتایج جستجو برای: sharp roll off

تعداد نتایج: 239699  

2016
S. Vinothkumar M. Ganesh Madhan

This paper reports an Ultra wideband pass filter with a center frequency of 3.96 GHz and 3 dB bandwidth of 1584 MHz. The filter design is based on transversal signal interference principle implemented by means of transmission lines.The features of this filter include low insertion loss, sharp rejection along with simple design approach. Also, comparison of simulation and measured filter paramet...

Journal: :IEICE Electronic Express 2015
Yu Cao Xiaohong Tang Ling Wang

A compact ultra-wideband (UWB) power divider with favorable selectivity is proposed. A transversal filtering transformer consisting of two different centrally loaded resonators with common feeding lines is introduced at input port to obtain good in-band response and high out-of-band rejection. Simple and rapid design procedure is adopted to find the key parameters. A prototype power divider is ...

Journal: :ARO. The Scientific Journal of Koya University 2023

A new structure of microstrip-based low-pass filter with wide stopband and sharp roll-off is introduced, in this paper. In the proposed topology, resonators T modified L Shapes have been used. To improve suppression factor relative bandwidth, second resonator has added to first resonator. The designed fabricated on a 20 mm thickness RO4003 substrate, which loss tangent 0.0021 dielectric constan...

2003
Marcel Ambroze Martin Tomlinson Graham Wade

This paper investigates the design and application of data magnitude modulation to reduce power amplifier back-off for QPSK and OQPSK modulations for small satellite Earth stations. The coefficients for data magnitude modulation are obtained by using an iterative design loop. The parameters of this loop are tuned to obtain maximum gain. Roll-off factors from 10% to 100% are considered, with emp...

Journal: :International Journal of Rf and Microwave Computer-aided Engineering 2022

This article proposes a filtering structure consisting of two half-wavelength resonators and open-stub loaded resonators, which generates third-order passbands. Multiple transmission zeros are introduced by the newly developed coupling scheme, resulting in extremely sharp roll-off desirable for highly selective filters. The proposed is applied to design PIN-diodes switch-controlled reconfigurab...

2000
C. Kane J. E. Marsden M. Ortiz A. Pandolfi

This work develops robust contact algorithms capable of dealing with multibody nonsmooth contact geometries for which neither normals nor gap functions can be defined. Such situations arise in the early stage of fragmentation when a number of angular fragments undergo complex collision sequences before eventually scattering. Such situations precludes the application of most contact algorithms p...

Journal: :IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences 2009

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