Methodology for retrofitting energy in existing office buildings using building information modelling programs

Autor: Christine Ezzat Danial, Ayman Hassaan Ahmed Mahmoud, Manal Yehia Tawfik

Publikováno v: Ain Shams Engineering Journal, Vol 14, Iss 6, Pp 102175- (2023)

Retrofitting existing buildings to raise energy efficiency is a highly important requirement, Because the problem of climate change has made the concept energy-saving an increasingly popular concept as a solution to this problem. Most of existing bui

Externí odkaz: https://doaj.org/article/cb877b09f87344bda833f26152305e27

Design of a 240-GHz LNA in 0.13 µm SiGe BiCMOS Technology

Autor: Md Najmussadat, Raju Ahamed, Mikko Varonen, Dristy Parveg, Yehia Tawfik, Halonen, Kari A. I.

Publikováno v: VTT Technical Research Centre of Finland-PURE
Najmussadat, M, Ahamed, R, Varonen, M, Parveg, D, Tawfik, Y & Halonen, K A I 2021, Design of a 240-GHz LNA in 0.13 µm SiGe BiCMOS Technology . in EuMIC 2020-2020 15th European Microwave Integrated Circuits Conference ., 9337305, IEEE Institute of Electrical and Electronic Engineers, pp. 17-20, 15th European Microwave Integrated Circuits Conference, EuMIC 2020, Utrecht, Netherlands, 11/01/21 .

In this paper, a seven stage low noise amplifier (LNA) in a 0.13 µm SiGe BiCMOS technology is presented. The LNA has a measured peak gain of 28.5 dB at 240 GHz with a 3-dB bandwidth of 14 GHz. It shows a simulated noise figure of 13.7 dB at 240 GHz.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::6267618cd6e5d865ac0931a2a30bdfef
https://aaltodoc.aalto.fi/handle/123456789/103402

250 GHz SiGe SPDT Resonator Switch

Autor: Yehia Tawfik, Ahamed Raju, Mikko Varonen, Md Najmussadat, Halonen, Kari A. I.

Publikováno v: VTT Technical Research Centre of Finland-PURE
Tawfik, Y, Raju, A, Varonen, M, Najmussadat, M & Halonen, K A I 2021, 250 GHz SiGe SPDT Resonator Switch . in EuMIC 2020-2020 15th European Microwave Integrated Circuits Conference ., 9337419, IEEE Institute of Electrical and Electronic Engineers, pp. 289-291, 15th European Microwave Integrated Circuits Conference, EuMIC 2020, Utrecht, Netherlands, 11/01/21 . < https://ieeexplore.ieee.org/document/9337419 >

This work demonstrates a single-pole double-throw resonator switch designed at 250 GHz in 0.13-µm SiGe BiCMOS technology with ft/fmax of 300/500. The resonator switch demonstrates a minimum measured de-embedded insertion loss of 4.2 dB, maximum isol

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::c2cdae587adedce72f29b69a5b79a695
https://cris.vtt.fi/en/publications/223399b2-fe6d-4fdb-a6e0-41b3f21307a2

Islamic Heritage Architecture and Art III

Autor: Casares, J., Dominguez Amarillo, S.

Islamic architecture has enriched design with a wide variety of structural shapes, including among others, unique arches, a wide variety of vaults and domes which allow for new forms to be developed. The influence that these structural forms have in

Urban and Maritime Transport XXVIII

Autor: Passerini, G., Ricci, S.

Containing papers presented at the 28th International Conference on Urban and Maritime Transport and the Environment, this volume covers two, apparently, parallel topics which meet in the transport and environmental management of coastal cities, both