Results 251 to 260 of about 14,830 (306)
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Electrical Engineering, 1962
A novel arrangement of n transformers delivers power at n times the line frequency. Ratings compare with transformers of the same weight. Waveform and voltage regulation are excellent. An experimental 7X unit with 60-cycle input gave 3.6 kw of 420-cycle output at approximately 90% efficiency. An additional 5X stage gave 2,100 cycles.
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A novel arrangement of n transformers delivers power at n times the line frequency. Ratings compare with transformers of the same weight. Waveform and voltage regulation are excellent. An experimental 7X unit with 60-cycle input gave 3.6 kw of 420-cycle output at approximately 90% efficiency. An additional 5X stage gave 2,100 cycles.
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International Journal of Electronics, 1977
The paper describes a scheme of a frequency multiplier that can be used for multiplying the frequency by n times. By connecting such m circuits in sequence it is possible to achieve frequency multiplication of mn.
KRISHNAMURTHY, KA +2 more
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The paper describes a scheme of a frequency multiplier that can be used for multiplying the frequency by n times. By connecting such m circuits in sequence it is possible to achieve frequency multiplication of mn.
KRISHNAMURTHY, KA +2 more
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IETE Journal of Education, 1982
The paper comprehensively describes the different up to date methods of frequency multiplication with multiplier classification. It covers the design approach of pulse multipliers using Walsh function technique. An exhaustive list of references is added.
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The paper comprehensively describes the different up to date methods of frequency multiplication with multiplier classification. It covers the design approach of pulse multipliers using Walsh function technique. An exhaustive list of references is added.
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Charge storage frequency multipliers
Proceedings of the IEEE, 1968Frequency multiplication by means of a nonlinear charge storage element is investigated. This element is assurmed to have an abrupt transition from an infinite to a zero capacitance. An analysis of a frequency multiplier circuit utilizing such an element is carried out with certain limitations imposed on the mode of operation in order to make possible ...
R.H. Johnston, A.R. Boothroyd
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Programmable Digital Frequency Multiplier
20th International Conference on VLSI Design held jointly with 6th International Conference on Embedded Systems (VLSID'07), 2007A programmable digital frequency multiplier with wide multiplication factor range and low lock time is presented. A digital algorithm is used to generate output frequency and an inbuilt PVT compensation mechanism ensures good frequency stability if there is any change in voltage and temperature during circuit operation. The circuit has been designed in
Sanjay Wadhwa +2 more
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Millimeter wave frequency multiplier
International Journal of Infrared and Millimeter Waves, 1981The GaAs Schottky diode mounted in a crossed waveguide structure gives much more efficient conversion than previously used point contact devices, and the power output at the second harmonic is sufficient for use in recently developed cryogenically cooled mixers [10, 11].
M. V. Schneider, T. G. Phillips
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Symmetrical frequency multiplier circuits
Transactions of the American Institute of Electrical Engineers, Part I: Communication and Electronics, 1960In recent times there has been considerable renewed interest in the use of static magnetic cores to produce power at a multiple of the frequency of a power source. Generally in these circuits, nonlinear magnetic reactors are connected in a symmetrical multiphase fashion, using the cores to produce harmonics and using symmetrical interphase connections ...
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Charge injection frequency multiplier
Applied Physics Letters, 1992We propose a novel frequency doubler, implemented in three terminal semiconductor heterostructures. This device represents a natural embodiment of the symmetry of hot-electron injection with respect to the polarity of the heating voltage. An efficient frequency doubling, comprising conversion gain with low harmonic distortion of the output signal was ...
Piotr M. Mensz +2 more
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Microwave Frequency Multipliers
2018This chapter presents the working principle, design and analysis of various microwave frequency multipliers based on diodes and transistors. Different frequency multiplier circuits based on Varactor diode, Schottky barrier diode, step recovery diodes (SRDs) and FETs are presented.
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High‐frequency low‐power fractional frequency multiplier
Microwave and Optical Technology Letters, 2012AbstractThe topology of fractional frequency multiplier (FFM) is proposed for high‐frequency and low‐power application. Based on the topology, a × (3/2) FFM is designed and fabricated in a 0.18 μm CMOS technology. The FFM's output power is larger than 0 dBm in its operation range from 15.3 to 18.45 GHz. © 2012 Wiley Periodicals, Inc.
Yannan N. Miao +4 more
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