Results 221 to 230 of about 1,723 (256)

Analysis of symmetric-varactor-frequency triplers

1993 IEEE MTT-S International Microwave Symposium Digest, 2002
A simple analytical model for varactors that have a symmetric capacitance-voltage characteristic is introduced. This empirical but general model can be used to represent the reactance nonlinearity of quantum-barrier varactors, symmetric high-electron-mobility varactors, and back-to-back barrier-n-n/sup +/ diodes.
K. Krishnamurthi, R.G. Harrison
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The design of a 0.33 THz frequency tripler

2016 IEEE 9th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies (UCMMT), 2016
In this paper, we use suspended microstrip to design a 0.33 THz fequency tripler, in which a pair of Schottky varactor chips parallel is adopted. Considering the present processing technology, it's easy for the unbalanced structure to provide bias to the diodes without an on-chip capacitor, which is essential to the balanced tripler scheme. The tripler
ZeZu Meng, Bo Zhang, Yong Fan, Li Sen Zhang, Dong Xing, Jun Long Wang   +5 more
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Substrate integrated waveguide balanced tripler

2011 International Conference on Electronics, Communications and Control (ICECC), 2011
Frequency translation circuits are key elements in communication systems. This paper presents a frequency balanced tripler for 12.6 GHz satellite communication systems, focusing on the advantages of substrate integrated waveguide (SIW) technology. The successful first iteration SIW balanced tripler achieved a state-of-the-art output power of 20.75 dBm ...
Yang Fei, Yu Hong-xi, Wang Ting-xia, Zhang Bo, Zhu Zheng-xian   +4 more
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Design of a 340GHz balanced frequency tripler

2015 IEEE International Conference on Communication Problem-Solving (ICCP), 2015
We present a design of balanced configuration frequency tripler based on planar schottky varactor diodes and mounted on a 0.03mm thickness quartz_glass substrate. The Zero-Biased balanced configuration is adopted to simplify the circuit structure and easy assembly, The simulated results shows that the best conversion loss is 11.527dB at 338.4GHz when ...
null Zhong Fei Chen, null Yong Zhang, null Tian Tao Hu   +2 more
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Harmonic analysis of the magnetic frequency tripler

IEEE Transactions on Communication and Electronics, 1963
A magnetic frequency tripler is a nonlinear magnetic system which is used for the production of triple-frequency output from a 3-phase fundamental frequency source. Although triplers have been used extensively for certain applications, the design of these devices has until now been largely empirical. Earlier papers1,2 have presented limited analyses of
P. P. Biringer, G. R. Slemon
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Synthesis of active microwave frequency triplers

Proceedings of the 43rd IEEE Midwest Symposium on Circuits and Systems (Cat.No.CH37144), 2002
After a brief discussion of active multiplier realizations, the authors focus on the synthesis of bipolar microwave frequency doublers in several topologies. The synthesis is outlined in four fundamental steps which encompass embedding network synthesis, device selection, bias optimization, and drive power determination.
J.P. Mima, G.R. Branner
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A novel technique for HEMT tripler design

1996 IEEE MTT-S International Microwave Symposium Digest, 2002
The effect of fundamental loading on HEMT tripler performance has been investigated. An 11.5 to 34.5 GHz HEMT tripler has been fabricated employing a novel design technique with fundamental rejection feedback. The experimental results show good agreement with the harmonic balance simulations.
null Guohao Zhang, R.D. Pollard, C.M. Snowden   +2 more
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Additional Losses in Frequency Tripler Windings

1988
Magnetic frequency triplers under construction have mega-Watt outputs1 and accurate determination of their winding losses is essential. Methods established for rotating machines and transformers2,4,5 are inadequate for frequency multipliers which have highly distorted primary current and higher frequency output current.
Tadeusz Janowski, Ryszard Goleman
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Tripler pioneers telemedicine across the Pacific.

Hawaii medical journal, 1994
Between January and August 1993, 59 medical teleconsultations were conducted successfully between the video teleconference center at Tripler Army Medical Center on Oahu and the video teleconference center on Kwajalein Atoll in the Republic of the Marshall Islands. This pioneer effort in the Pacific connected 2 archipeligoes separated by more than 2,200
Delaplain, C B, Lindborg, C E, Norton, S A, Hastings, J E   +3 more
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High-Efficiency Terahertz Frequency Triplers

2007 IEEE/MTT-S International Microwave Symposium, 2007
Design and experimental analysis of high-power and high-efficiency frequency triplers to the 220 GHz and 440 GHz bands are presented. Test data for the 220 GHz tripler show 23 mW output power with 16% efficiency. Test data for the 440 GHz tripler show 13 mW output power with 12% efficiency. The 3 dB bandwidth for both triplers is about 7%.
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