Results 251 to 260 of about 66,910 (298)

Even-harmonic C-band modulator

IEEE Transactions on Microwave Theory and Techniques, 2005
Direct modulation at microwave frequencies promises the advantages of compact size, low cost, and relatively simple system design. In this paper, a novel architecture of a direct-vector C-band modulator is described. In particular, a subharmonic mixer is used to overcome the high carrier leakage that is associated with conventional fundamental ...
Di Alessio, F. L., D'Orazio, A., Lavolpe, R.   +2 more
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A high-resolution C-banding technique

Canadian Journal of Genetics and Cytology, 1986
A high-resolution C-banding technique is described. The major advantages of this method are its simplicity and reliability. Because this technique allows the recognition of unusual C-band heteromorphisms, it can be very useful in population cytogenetic studies.Key words: karyotyping, banding (C), heterochromatin, high resolution.
M, De Braekeleer, M, Keushnig, C C, Lin
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Scanning Electron Microscopy of C-Banding

Zoological Science, 1996
The mechanism of C-banding was analyzed on the basis of the structural changes of the 30 nm chromatin fibre using scanning electron microscopy (SEM). SEM of non-banded metaphase spreads of L-cells revealed chromosomes consisting of 30 nm chromatin fibre loops along the entire length.
S, Takayama, Y, Taketani, K, Bunno
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C-Band Heteromorphism in Breast Cancer Patients

Cancer Genetics and Cytogenetics, 1985
The pattern of heteromorphism in the C-band-positive constitutive heterochromatin of human chromosomes #1, #9, and #16 was studied in peripheral lymphocytes of 54 breast cancer patients and 78 control individuals. The parameters of the heterochromatic regions analyzed were relative size, symmetry-asymmetry within homologous pairs, and prevalence of ...
R, Berger, A, Bernheim, U, Kristoffersson, F, Mitelman, H, Olsson   +4 more
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A C-band gyro-TWT

1980 International Electron Devices Meeting, 1980
The operating characteristics of a gyrotron travellng wave tube (gyro-TWT) operating at C-band are reported. Detailed testing showed that at higher beam voltage and current and with a magnetic field profile increasing in magnitude toward the rf output window, the output power could be increased from 50 kW at 16.6% efficiency to 128 kW at 24% efficiency.
P. Ferguson, R. Symons
openaire   +1 more source

C-Banding of Plant Chromosomes

2016
C-banding is used to differentially stain metaphase chromosomes in organisms having appreciable amounts of constitutive heterochromatin. Its primary benefits are that it is an inexpensive and a relatively fast method of identifying individual chromosomes and morphological or karyotypic variation, including large chromosomal rearrangements and ...
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C-band coherent direct synthesizer

12th International Conference on Microwaves and Radar. MIKON-98. Conference Proceedings (IEEE Cat. No.98EX195), 2002
The principle of operation of a direct coherent synthesizer is described. Practical realisation and measurement results of the C-band synthesizer are presented. Good parameters such as small frequency steps, fast switching time and low phase noise level are obtained.
W. Topilko, D. Startek
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C-Band Satellite Communications

30th AIAA International Communications Satellite System Conference (ICSSC), 2012
Commercial satellite communications began in the early 1960s, building on C-band technologies developed in previous decades for point-to-point terrestrial microwave links. As the industry has grown, C-band usage in satellite communications has been augmented, but not replaced, by the usage of higher frequency bands.
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C-band complementary TRAPATT diodes

Proceedings of the IEEE, 1974
Complementary n+-p junction TRAPATT diodes have been fabricated for C-band operation. Peak power output as high as 27 W with 42.5-percent efficiency has been achieved at 7.2 GHz.
R.S. Ying, T.T. Fong
openaire   +1 more source

C-band 5W power amplifier

Proceedings of The 2nd International Conference on Satellite Communications, 2005
There are result of design and fabrication of C-band Power Amplifier in this paper. Power Amp has typical gain 34 dB and output power 5W, 1dB gain compression with efficiency more than 31%.
I. Abolduyev, N. Alkeev, V. Minnebaev
openaire   +1 more source