This paper proposes a multiway power divider for wideband (4:1) beamforming arrays. The divider’s input reflection characteristic (S11) is achieved using a multisection stepped-impedance transformer. Moreover, the divider’s isolation (S32) bandwidth is increased by incorporating inductors and capacitors in addition to the conventional resistor only isolation networks of the divider. The analysi...

This work is mainly to ensure the reliability of low power low noise amplifier design and analysis which is useful for 4G receiver front ends in particularly WIMAX applications. The low noise amplifiers implemented by using different topologies namely (a) Cascoded Common source amplifier technique(b) Folded Cascode amplifier technique (c) Shunt feedback amplifier technique (d) Current reuse Com...

Neurology® Clinical Practice 2010;75(Suppl 1):S22–S27 Care of the patient with multiple sclerosis (MS) is becoming increasingly complex, with new symptomatic therapies (e.g., dalfampridine), enhanced use of disease-modifying therapies that are potentially both more efficacious and more risky (e.g., natalizumab, rituximab) than “standard” immunomodulators, the advent of oral disease-modifying th...

In, this paper, compact antenna have been designed and implemented in a SISO system and multiple antenna systems including 1X2 SIMO, 2X1 MISO and 2X2 MIMO systems respectively. The antennas are compact double-sided printed microstrip patch antennas and fed by a microstrip line designed for a frequency of 2. 4 GHz used for industrial, scientific and medical (ISM) band applications. The antennas ...

A new dual-polarized antenna loading frequency-selective surface (FSS) is proposed for 5G wireless local networks (WLANs) application. The antenna consists of two orthogonal bow-tie dipoles and a ground plane. A new wideband FSS is designed comprising ring-slot connecting rectangular slots. The reflection coefficient of wideband FSS is less than 0.9 from 4–6.5GHz. The phase of reflection coeffi...

A wideband dual-polarized crossed-dipole antenna with parasitical crossed-strip for basestation applications is presented. By using a pair of orthogonal crossed-dipoles, two linear polarizations (±45◦) are obtained. A parasitical crossed-strip is introduced to improve the impendence bandwidth and enhance the isolation (S12) between the two orthogonal polarizations of the upper band. The antenna...

BACKGROUND We describe the design, the construction and performance of a narrow band ortho-mode transducer, currently used in the 5 GHz polarimetric receiver of the Galactic Emission Mapping project. RESULTS The ortho-mode transducer was designed to achieve a high degree of transmission within the 400 MHz of the GEM band around the 5 GHz (4.8-5.2 GHz). It is composed of a circular-to-square w...

Thisarticlepresentsthedesign and fabrication ofa high power amplifierbased onwilkinson combiner. A 45W basic amplifier module isdesigned usinglaterally-diffused metal-oxide semiconductor (LDMOS) fieldeffect transistor (FET) PTFA260451E transistor. Wilkinson combineris used to combine two input powers toproduce 90W of power. Theproposed is researched, designed optimized usingadvanced design syst...