Low Cost Parametric Failure Diagnosis of RF Transceivers

2006 ◽  
Author(s):  
Donghoon Han ◽  
S. Goyal ◽  
S. Bhattacharya ◽  
A. Chatterjee
Keyword(s):  
Low Cost ◽  
Failure Diagnosis ◽  
Rf Transceivers ◽  
Parametric Failure

Advanced SiP Packaging Technologies of IPD for Mobile Applications

2010 ◽  
Vol 2010 (DPC) ◽  
pp. 1-20
Author(s):  
Geun Sik Kim ◽  
Kai Liu ◽  
Flynn Carson ◽  
Seung Wook Yoon ◽  
Meenakshi Padmanathan
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Autonomous Systems ◽  
System Level ◽  
Design And Technology ◽  
Wafer Level ◽  
Future Technology ◽  
Rf Transceivers ◽  
And Performance ◽  
3D Stacking

IPD technology was originally developed as a way to replace bulky discrete passive components, but it¡¯s now gaining popularity in ESD/EMI protection applications, as well as in RF, high-brightness LED silicon sub-mounts, and digital and mixed-signal devices. Already well known as a key enabler of system-in-packages (SiPs), IPDs enable the assembly of increasingly complete and autonomous systems with the integration of diverse electronic functions such as sensors, RF transceivers, MEMS, power amplifiers, power management units, and digital processors. The application area for IPD will continue to evolve, especially as new packaging technology, such as flipchip, 3D stacking, wafer level packaging become available to provide vertical interconnections within the IPD. New applications like silicon interposers will become increasingly significant to the market. Currently the IPD market is being driven primarily by RF or wireless packages and applications including, but not limited to, cell phones, WiFi, GPS, WiMAX, and WiBro. In particular, applications and products in the emerging RF CMOS market that require a low cost, smaller size, and high performance are driving demand. In order to get right products in size and performance, packaging design and technology should be considered in device integration and implemented together in IPD designs. In addition, a comprehensive understanding of electrical and mechanical properties in component and system level design is important. This paper will highlight some of the recent advancements in SiP technology for IPD and integration as well as what is developed to address future technology requirements in IPD SiP solutions. The advantage and applications of SiP solution for IPD will be presented with several examples of IPD products. The design, assembly and packaging challenges and performance characteristics will be also discussed.

scholarly journals Failure analysis on a water pump based on a low-cost MEMS accelerometer and machine learning classifiers

2020 ◽  
Vol 41 (2) ◽  
pp. 171
Author(s):  
Luciane Agnoletti dos Santos Pedotti ◽  
Ricardo Mazza Zago ◽  
Jefferson Cutrim Rocha ◽  
José Gilberto Dalfré Filho ◽  
Mateus Giesbrecht ◽  
...  
Keyword(s):  
Machine Learning ◽  
Rotor Blade ◽  
Accurate Result ◽  
Low Cost ◽  
Failure Diagnosis ◽  
Support Vector ◽  
Water Pump ◽  
Vibration Signals ◽  
Mems Accelerometer ◽  
Machine Learning Classifiers

This work presents a failure diagnosis tool for a water pump using a low-cost MEMS accelerometer. It was inserted three types of failures: rotor blade (new and damaged), pump soleplate tightness (stiff or loose), and cavitation, in this case on three conditions: none, incipient and severe, totaling twelve fault combinations. These conditions were tested under two different speeds to perform the diagnosis, totaling twenty-four tests. In all cases, the vibration signals from axes X, Y, and Z were acquired. Some features extracted from the vibration spectra from X-axis were used to compose the dataset. These data were analyzed employing logistic regression, a linear support vector machine (SVM), and an artificial neural network multilayer perceptron (ANN-MLP). We compared these three techniques of machine learning and evaluated which one was able to obtain the most accurate result. Using the ANN-MLP, the system was able to detect all three types of failures inserted, with about 100% of accuracy on the rotor blade condition, 92% for anchorage faults, and about 99% accuracy on cavitation state. As a conclusion, it is demonstrated that this classifier algorithm can be used to process the data from the low-cost MEMS accelerometer in predictive maintenance as an accurate tool.

Low-cost EVM built-in test of RF transceivers

2014 ◽  
Author(s):  
Ayssar Serhan ◽  
Louay Abdallah ◽  
Haralampos-G. Stratigopoulos ◽  
Salvador Mir
Keyword(s):  
Low Cost ◽  
Rf Transceivers

scholarly journals Built-In Measurements in Low-Cost Digital-RF Transceivers

2011 ◽  
Vol E94-C (6) ◽  
pp. 930-937 ◽  
Author(s):  
Oren ELIEZER ◽  
Robert Bogdan STASZEWSKI
Keyword(s):  
Low Cost ◽  
Rf Transceivers ◽  
Digital Rf

Multi-site test of RF transceivers on low-cost digital ATE

2011 ◽  
Author(s):  
Ivo Kore ◽  
Ben Schuffenhauer ◽  
Frank Demmerle ◽  
Frank Neugebauer ◽  
Gert Pfahl ◽  
...  
Keyword(s):  
Low Cost ◽  
Rf Transceivers ◽  
Site Test ◽  
Digital Ate

Topology-Based Failure Diagnosis Algorithm in Space Information Networks

2011 ◽  
Vol 58-60 ◽  
pp. 956-962
Author(s):  
Jun Liu ◽  
Jin Tao Wang ◽  
Yu Liu
Keyword(s):  
Low Cost ◽  
Dominating Set ◽  
Failure Detection ◽  
Information Networks ◽  
Failure Diagnosis ◽  
Proper Number ◽  
Diagnosis Rate ◽  
Diagnosis Algorithm ◽  
Space Information Networks

The space information networks are easy to be disturbed and destroyed, which is due to their hostile operational environments and results in a decrease in network quality of service. Given their characteristics, a distributed topology failure diagnosis scheme composed of failure detection node election and failure diagnosis is proposed. First, a proper number of nodes are elected to detect faults in a coordinated and distributed way by using minimum dominating set algorithm. Then elected diagnosis nodes detect faults around based on the theory of dependency-graph. The technology of minimum Huffman tree is used to preliminarily locate failures and on that base the further location is fulfilled through sending detection messages on purpose. Simulation results from NS2 demonstrate that high accurate diagnosis rate can be reached at the expense of low cost by this failure diagnosis algorithm.

Decomposition of the metastable beta titanium alloy Ti-15-3

1983 ◽  
Vol 41 ◽  
pp. 264-265
Author(s):  
Y. L. Chen ◽  
S. Fujlshiro
Keyword(s):  
Low Cost ◽  
High Strength ◽  
Alpha Phase ◽  
Thick Sheet ◽  
Omega Phase ◽  
Beta Titanium Alloy ◽  
Beta Titanium ◽  
Beta Matrix ◽  
Metastable Beta ◽  
Very High

Metastable beta titanium alloys have been known to have numerous advantages such as cold formability, high strength, good fracture resistance, deep hardenability, and cost effectiveness. Very high strength is obtainable by precipitation of the hexagonal alpha phase in a bcc beta matrix in these alloys. Precipitation hardening in the metastable beta alloys may also result from the formation of transition phases such as omega phase. Ti-15-3 (Ti-15V- 3Cr-3Al-3Sn) has been developed recently by TIMET and USAF for low cost sheet metal applications. The purpose of the present study was to examine the aging characteristics in this alloy.The composition of the as-received material is: 14.7 V, 3.14 Cr, 3.05 Al, 2.26 Sn, and 0.145 Fe. The beta transus temperature as determined by optical metallographic method was about 770°C. Specimen coupons were prepared from a mill-annealed 1.2 mm thick sheet, and solution treated at 827°C for 2 hr in argon, then water quenched. Aging was also done in argon at temperatures ranging from 316 to 616°C for various times.

Chromic Acid Etching of Polyethylene

1973 ◽  
Vol 31 ◽  
pp. 72-73
Author(s):  
J. D. Muzzy ◽  
R. D. Hester ◽  
J. L. Hubbard
Keyword(s):  
Chromic Acid ◽  
Low Cost ◽  
Acid Etching ◽  
Crystalline Morphology ◽  
Bulk Specimen ◽  
Morphological Studies ◽  
Perfect Form ◽  
Molecular Length ◽  
Lamellar Texture ◽  
Cost Studies

Polyethylene is one of the most important plastics produced today because of its good physical properties, ease of fabrication and low cost. Studies to improve the properties of polyethylene are leading to an understanding of its crystalline morphology. Polyethylene crystallized by evaporation from dilute solutions consists of thin crystals called lamellae. The polyethylene molecules are parallel to the thickness of the lamellae and are folded since the thickness of the lamellae is much less than the molecular length. This lamellar texture persists in less perfect form in polyethylene crystallized from the melt.Morphological studies of melt crystallized polyethylene have been limited due to the difficulty of isolating the microstructure from the bulk specimen without destroying or deforming it.

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