scholarly journals Microstrip line Antenna Fabrication Material

2018 ◽  
Vol 7 (2.8) ◽  
pp. 340
Author(s):  
Vimlesh Singh ◽  
Priyanka Bansal ◽  
P K.Singhal
Keyword(s):  
Thermal Properties ◽  
Flexible Electronics ◽  
Integrated Circuit ◽  
Chemical Element ◽  
Microstrip Line ◽  
Microwave Integrated Circuit ◽  
Civilian Life ◽  
Communication Engineering ◽  
Higher Power ◽  
Materials Used

This paper presents an extensive survey of electromagnetic materials used for antenna fabrication, which find application in Civilian life as well as defense life. When a densely packed microwave integrated circuit is designed, it requires protection from higher power transient because of specific polarization and frequency response. To meet specification of such kind of microwave circuits it is desired to exploit properties of fabricating materials, which are not found in nature but can be prepared with specific proportion of chemical element combination. This study provides in-depth responses of materials toward electromagnetic wave's characteristics such as dielectric, flexible electronics, electrical and thermal properties, which have vast potential in communication engineering.

Emerging Techniques for the Characterization of Nano-Mechanical Properties of Integrated Circuit Components

2008 ◽  
Author(s):  
Nicholas Randall ◽  
Rahul Premachandran Nair
Keyword(s):  
Mechanical Properties ◽  
Quality Control ◽  
Integrated Circuits ◽  
Integrated Circuit ◽  
Manufacturing Process ◽  
Solder Bumps ◽  
Initial Work ◽  
Circuit Components ◽  
Materials Used

Abstract With the growing complexity of integrated circuits (IC) comes the issue of quality control during the manufacturing process. In order to avoid late realization of design flaws which could be very expensive, the characterization of the mechanical properties of the IC components needs to be carried out in a more efficient and standardized manner. The effects of changes in the manufacturing process and materials used on the functioning and reliability of the final device also need to be addressed. Initial work on accurately determining several key mechanical properties of bonding pads, solder bumps and coatings using a combination of different methods and equipment has been summarized.

РАЗРАБОТКА СВЧ МОНОЛИТНЫХ ИНТЕГРАЛЬНЫХ СХЕМ МИЛЛИМЕТРОВОГО ДИАПАЗОНА НА ОСНОВЕ GAAS ДЛЯ ПРИМЕНЕНИЯ В СОВРЕМЕННЫХ ИНФОРМАЦИОННОКОММУНИКАЦИОННЫХ СИСТЕМАХ НОВОГО ПОКОЛЕНИЯ (5G)

2020 ◽  
Vol 96 (3s) ◽  
pp. 321-324
Author(s):  
Е.В. Ерофеев ◽  
Д.А. Шишкин ◽  
В.В. Курикалов ◽  
А.В. Когай ◽  
И.В. Федин
Keyword(s):  
Output Power ◽  
Power Amplifier ◽  
Integrated Circuit ◽  
Phase Shifter ◽  
Phase Error ◽  
Microwave Integrated Circuit ◽  
Gain Compression ◽  
Monolithic Microwave Integrated Circuit ◽  
And Performance ◽  
Power Capability

В данной работе представлены результаты разработки СВЧ монолитной интегральной схемы шестиразрядного фазовращателя и усилителя мощности диапазона частот 26-30 ГГц. СКО ошибки по фазе и амплитуде фазовращателя составили 1,2 град. и 0,13 дБ соответственно. Максимальная выходная мощность и КПД по добавленной мощности усилителя в точке сжатия Ку на 1 дБ составили 30 дБм и 20 % соответственно. This paper describes the design, layout, and performance of 6-bit phase shifter and power amplifier monolithic microwave integrated circuit (MMIC), 26-30 GHz band. Phase shifter MMIC has RMS phase error of 1.2 deg. And RMD amplitude error is 0.13 dB. MMIC power amplifier has output power capability of 30 dBm at 1 dB gain compression (P-1dB) and PAE of 20 %.

Impact of hot molding temperature and duration on braking behavior of friction material

2019 ◽  
Vol 234 (9) ◽  
pp. 1416-1424
Author(s):  
Nesrine Hentati ◽  
Mohamed Kchaou ◽  
Anne-Lise Cristol ◽  
Riadh Elleuch ◽  
Yannick Desplanques
Keyword(s):  
Thermal Properties ◽  
Friction Mechanisms ◽  
Tribological Behavior ◽  
Friction Material ◽  
Mechanical And Thermal Properties ◽  
Molding Temperature ◽  
Long Duration ◽  
Wear And Friction ◽  
And Performance ◽  
Materials Used

The manufacturing process of brake materials used for braking applications consists of a succession of steps among which the hot molding has a major impact on properties and performance of materials. In this paper, impact of hot molding temperature and duration on mechanical and thermal properties of friction materials developed with simplified formulation was investigated. Two different hot molding conditions were studied: condition 1 (low temperature associated to long duration) and condition 2 (high temperature associated to short duration). Braking behavior, thermo-mechanical phenomena and wear and friction mechanisms were also investigated. Results indicated that hot molding conditions did not significantly affect mechanical properties and tribological behavior, but they had impact on thermal properties (material molded according to condition 1, material A presented a higher thermal conductivity) and on wear mechanisms involved in the contact. In addition, results revealed that the studied hot molding conditions impacted thermal localization recorded during braking that was denser for the disc rubbed against material B (material molded according to condition 2).

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