Nauki Techniczne

International Journal of Electronics and Telecommunications

Zawartość

International Journal of Electronics and Telecommunications | 2014 | vol. 60 | No 2

Abstrakt

Abstract This paper presents an innovative extention of the noise wave definition to mixed mode, differential - and commonmode noise waves which can be used for noise analysis of differential microwave networks. Mixed mode noise waves are used next to define generalized mixed mode noise wave correlation matrices of microwave multiport networks. Presented approach may be used for noise analysis of microwave differential networks with differential ports as well as with conventional single ended ports.
Przejdź do artykułu

Autorzy i Afiliacje

Janusz A. Dobrowolski

Abstrakt

Abstract Tandem (two p-n junctions connected by tunnel junction) and multijunction solar cells (MJSCs) based on AIIIBV semiconductor compounds and alloys are the most effective photovoltaic devices. Record efficiency of the MJSCs exceeds 44% under concentrated sunlight. Individual subcells connected in series by tunnel junctions are crucial components of these devices. In this paper we present atmospheric pressure metal organic vapour phase epitaxy (AP-MOVPE) of InGaAsN based subcell for InGaAsN/GaAs tandem solar cell. The parameters of epitaxial structure (optical and electrical), fabrication process of the test solar cell devices and current-voltage (J-V) characteristics are presented and discussed.
Przejdź do artykułu

Autorzy i Afiliacje

Magdalena Latkowska
Wojciech Dawidowski
Beata Ściana
Iwona Zborowska-Lindert
Miroslav Mikolášek
Damian Radziewicz
Damian Pucicki
Katarzyna Bielak
Mikołaj Badura
Jaroslav Kováč
Marek Tłaczała

Abstrakt

Abstract The majority of homing guided missiles use gimbaled seekers. The equations describing seeker gimbal system are highly nonlinear. Accurate nonlinear control of the motion of the gimbaled seeker through the attached DC motors is required. In this paper, an online technique for finite-horizon nonlinear tracking problems is presented. The idea of the proposed technique is the change of variables that converts the nonlinear differential Riccati equation to a linear Lyapunov differential equation. The proposed technique is effective for wide range of operating points. Simulation results for a realistic gimbaled system with different engagement scenarios are given to illustrate the effectiveness of the proposed technique.
Przejdź do artykułu

Autorzy i Afiliacje

Ahmed Khamis
D. Subbaram Naidu
Ahmed M. Kamel

Abstrakt

Abstract ILC machine - International Liner Collider, is one of two accelerators e+e- just under design and advanced consideration to be built with final energy of colliding electron and positron beams over 1 TeV. An alternative project to ILC is CLIC in CERN The ILC machine is an important complementary addition for the research potential of the LHC accelerator complex. The required length of ILC is minimally 30 km, but some versions of the TDR estimates mention nearly 50km. Superconducting RF linacs will be built using well established 1,3 GHz TESLA technology using ultrapure niobium or Nb3Sn resonant microwave cavities of RRR class, of ultimate finesse, working with gradients over 35MV/m, while some versions of the design mention ultimate confinement as high as 50MV/m. Several teams from Poland (Kraków. Warszawa, Wrocław - IFJ-PAN, AGH, UJ, NCBJ, UW, PW, PWr, INT-PAN) participate in the global design effort for this machine - including detectors, cryogenics, and SRF systems. Now it seems that the ILC machine will be built in Japan, during the period of 2016-2026. If true, Japan will turn to a world super-power in accelerator technology no.3 after CERN and USA. The paper summarizes the state-ofthe- art of technical and administration activities around the immense ILC and CLIC machines, with emphasis on potential participation of Polish teams in the global effort of newly established LCC - The Linear Collider Consortium.
Przejdź do artykułu

Autorzy i Afiliacje

Ryszard S. Romaniuk

Instrukcja dla autorów

Author Guidelines

We recommend the use of LaTeX2e for the preparation of your camera-ready manuscript, together with the corresponding class file.

We do not encourage the use of Microsoft Word, particularly as the layout of the pages (the position of figures and paragraphs or fonts) can change between printouts. If you would like to prepare your manuscript using MS Word please contact Editorial Office.

Please carefully read the information below, and download the relevant files.

To do so, please download JETInfo.pdf

Microsoft Windows or Macintosh LaTeX2e style file:

      Please download IEEEtran.zip

Publication requirement is to prepare no less than 6 pages including references using provided LaTeX2e style. All papers that do not meet this requirement will be rejected before review stage.

 

 

Please submit the following:

  •     All source LaTeX files.
  •     Final PDF file (for reference).
  •     PS/EPS or TIFF files for all figures.
  •     Complete contact information for all authors.
  •     Mailing address, a VAT/CIF/NIF/NIP number (depending on the country) of affiliated company the invoice should be sent.

 

IMORTANT! Before staring submission please prepare a contact information for all co-authors (full names, e-mails and affiliations). A contact information for all authors should be provided during submission process in "Step 2. Entering the Submission's Metadata". Papers submitted without contact information for all co-

Ta strona wykorzystuje pliki 'cookies'. Więcej informacji