Noise figure and gain of HEMTs vs. bias conditions measured by noise figure test-set

2002 ◽  
Author(s):  
A. Di Paola ◽  
M. Sannino
Keyword(s):  
Noise Figure ◽  
Test Set ◽  
Figure Test

On-wafer noise parameters measurement using an extended six-port network and conventional noise figure analyzer

2016 ◽  
Vol 9 (4) ◽  
pp. 821-829 ◽  
Author(s):  
Abdul-Rahman Ahmed ◽  
Dong-Hyun Lee ◽  
Kyung-Whan Yeom
Keyword(s):  
Noise Figure ◽  
Cost Savings ◽  
Low Noise ◽  
Successful Implementation ◽  
Test Set ◽  
Noise Parameters ◽  
Parameter Test ◽  
Simplified Procedure ◽  
Parameters Measurement ◽  
Port Device

In this paper, we demonstrate the successful implementation of an onwafer noise parameters test set that employs an extended six-port network and a conventional noise figure analyzer. The necessary formulation that enables the calibration of the noise parameter test set as well as extraction of the noise wave correlation matrix of a two-port device under test (DUT) was tested for coaxial connector-type DUT measurement in an earlier work but not for onwafer-type DUT. Furthermore, we demonstrate the performance of this technique against data obtained from the well-known tuner method. Measurement carried out for very low-noise figure (2 dB) onwafer-type amplifier demonstrates the capability of our technique. The measured noise parameters show fluctuations in minimum noise figure, NFminof ±0.1 dB, and in noise resistance Rnof about 2%. This test set is simple and fast leading to tremendous time- and cost-savings as well as a simplified procedure in onwafer noise parameters measurements.

Symptomvalidierungstests in der neuropsychologischen Diagnostik: eine Analogstudie

2004 ◽  
Vol 15 (2) ◽  
pp. 81-90 ◽  
Author(s):  
Thomas Merten ◽  
Matthias Henry ◽  
Robin Hilsabeck
Keyword(s):  
Short Term Memory ◽  
Memory Test ◽  
Short Term ◽  
Term Memory ◽  
Word Memory Test ◽  
Word Memory ◽  
Complex Figure ◽  
Trail Making ◽  
Figure Test ◽  
Word Completion

Zusammenfassung: In der neuropsychologischen Diagnostik, mehr noch aber in der Begutachtung gewinnen Symptomvalidierungstests (SVT) zur Untersuchung der Leistungsmotivation zunehmend an Bedeutung. In einer Analogstudie wurde die Güte zweier international bekannter Verfahren (Word Memory Test; Amsterdam Short Term Memory Test) sowie einer Neuentwicklung (Word Completion Memory Test) untersucht. Zusätzlich wurden Leistungstests eingesetzt: der Trail Making Test (TMT), der Complex Figure Test sowie die Standard Progressive Matrices (SPM). Eine Gruppe von 10 experimentellen Simulanten wurde spezifisch auf die Vortäuschung von Gedächtnisstörungen vorbereitet, während eine Kontrollgruppe (n = 10) optimale Testanstrengung zeigen sollte. Alle SVT führten im Gegensatz zu den Simulationsmarkern des TMT und der SPM zu einer ausgezeichneten Klassifikationsgüte (95-100 %). Die neuropsychologischen Leistungsmaße wiesen zwar signifikante Gruppenunterschiede aus, zeigten aber auch eine nicht unbedeutende Überlappung der Verteilungen. Mehr Studien sind notwendig, um den SVT in den deutschsprachigen Ländern den Platz zu sichern, den sie international aktuell in der klinisch-neuropsychologischen Forschung und Praxis einnehmen.

Attachment and Field Dependence: Individual Differences in Information Processing

2004 ◽  
Vol 9 (1) ◽  
pp. 43-55 ◽  
Author(s):  
Patrizia Vermigli ◽  
Alessandro Toni
Keyword(s):  
Information Processing ◽  
Individual Differences ◽  
Field Dependence ◽  
Attachment Styles ◽  
Close Relationships ◽  
Adult Age ◽  
Males And Females ◽  
Figure Test ◽  
The Relationship ◽  
Measure Field

The present research analyzes the relationship between attachment styles at an adult age and field dependence in order to identify possible individual differences in information processing. The “Experience in Close Relationships” test of Brennan et al. was administered to a sample of 380 individuals (160 males, 220 females), while a subsample of 122 subjects was given the Embedded Figure Test to measure field dependence. Confirming the starting hypothesis, the results have shown that individuals with different attachment styles have a different way of perceiving the figure against the background. Ambivalent and avoidant individuals lie at the two extremes of the same dimension while secure individuals occupy the central part. Significant differences also emerged between males and females.

Using Connectionist Modules for Decision Support

1990 ◽  
Vol 29 (03) ◽  
pp. 167-181 ◽  
Author(s):  
G. Hripcsak
Keyword(s):  
Decision Support ◽  
Standard Deviation ◽  
Confidence Interval ◽  
Posterior Probability ◽  
Back Propagation ◽  
Connectionist Model ◽  
Test Set ◽  
The Third ◽  
Independent Test ◽  
Better Than

AbstractA connectionist model for decision support was constructed out of several back-propagation modules. Manifestations serve as input to the model; they may be real-valued, and the confidence in their measurement may be specified. The model produces as its output the posterior probability of disease. The model was trained on 1,000 cases taken from a simulated underlying population with three conditionally independent manifestations. The first manifestation had a linear relationship between value and posterior probability of disease, the second had a stepped relationship, and the third was normally distributed. An independent test set of 30,000 cases showed that the model was better able to estimate the posterior probability of disease (the standard deviation of residuals was 0.046, with a 95% confidence interval of 0.046-0.047) than a model constructed using logistic regression (with a standard deviation of residuals of 0.062, with a 95% confidence interval of 0.062-0.063). The model fitted the normal and stepped manifestations better than the linear one. It accommodated intermediate levels of confidence well.

On Wafer Noise Figure De-Embedding Method for CMOS Differential LNA

2020 ◽  
Vol E103.C (7) ◽  
pp. 335-340
Author(s):  
Maizan MUHAMAD ◽  
Norhayati SOIN ◽  
Harikrishnan RAMIAH
Keyword(s):  
Noise Figure ◽  
Embedding Method

BERPIKIR REFLEKTIF SISWA BERDASARKAN GAYA KOGNITIF FIELD INDEPENDENT DAN FIELD DEPENDENT

EDUPEDIA ◽  
2019 ◽  
Vol 3 (2) ◽  
pp. 117
Author(s):  
Sayyidah Umma Rahmawati ◽  
Senja Putri Merona
Keyword(s):  
Field Independent ◽  
Field Dependent ◽  
Figure Test

Penelitian ini bertujuan untuk mendeskripsikan berpikir reflektif siswa ditinjau dari gaya kognitif field independent dan field dependent. Penelitian ini merupakan penelitian deskriptif dengan pendekatan kualitatif. Adapun istrumen yang digunakan adalah Group Embedded Figure Test (GEFT), tes soal berpikir reflektif dan wawancara. Sedangkan analisis data yang digunakan adalah analisis data Miles dan Huberman yang tediri dari reduksi data, penyajian data dan kesimpulan atau verifikasi.Hasil penelitian ini menunjukkan bahwa pada indikator berpikir reflektif reacting terdapat kesamaan berpikir reflektif antara siswa field independent dan field dependent. Pada indikator berpikir reflektif comparing terdapat perbedaan dalam hal menghubungkan pengetahuan yang diberikan dengan pengetahuan yang dimiliki. Pada indikator berpikir reflektif contemplating terdapat perbedaan pada kemampuan mendeteksi kesalahan. Temuan lain dalam penelitian ini adalah bahwa siswa field independent menjelaskan jawabannya dengan detail dan rinci, cenderung menggunakan cara menghafal dan memiliki kepercayaan diri yang tinggi. Sedangkan siswa field dependent menjelaskan jawabannya secara umum, memiliki analisis yang baik dan menyukai cara yang telah ditetapkan

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