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Monday, July 13, 2020 | History

2 edition of A Millimeter-wave TunneLadder TWT found in the catalog.

A Millimeter-wave TunneLadder TWT

A Millimeter-wave TunneLadder TWT

  • 269 Want to read
  • 11 Currently reading

Published by National Aeronautics and Space Administration, For sale by the National Technical Information Service in [Washington, DC], [Springfield, Va .
Written in English

    Subjects:
  • Integrated circuits.,
  • Electronics.

  • Edition Notes

    Other titlesMillimeter wave TunneLadder TWT.
    StatementA. Jacquez ... [et al.].
    SeriesNASA contractor report -- 182184., NASA contractor report -- NASA CR-182184.
    ContributionsJacquez, A., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL18031152M

    Abstract A low-cost, narrowband, millimeter wave space communications TWT design was studied. Cold test interaction structure scale models were investigated and analyses were undertaken to predict the electrical and thermal response of the hypothetical W TWT at 42 GHz and 21 kV beam voltage. An attenuator is the opposite of an amplifier. An attenuator is used for reducing the power of a signal. An attenuator is able to do this without modifying the waveform of the signal.

    Millimeter Wave Coupled Cavity TWT Series CPI | 4CW50,J For information on this and other CPI products, visit our website at: , or contact: CPI MPP Division, Hansen Way, Palo Alto, CA t el ephone: 1() fa x: () | e m a li: [email protected] CPI 10/ springer, A gyrotron traveling-wave amplifier (gyro-TWT) with the high-power and broad-band capabilities is considered as a turn-on key for next generation high-resolution radar. The book presents the most advanced theory, methods and physics in a gyro-TWT. The most challenging problem of instability competition has been for the first time addressed in a focused and systematic way and reported.

    Read "Millimeter-Wave Gyrotron Traveling-Wave Tube Amplifiers" by Chao-Hai Du available from Rakuten Kobo. A gyrotron traveling-wave amplifier (gyro-TWT) with the high-power and broad-band capabilities is considered as a turn-o Brand: Springer Berlin Heidelberg. A millimeter wave scanner is a whole-body imaging device used for detecting objects concealed underneath a person’s clothing using a form of electromagnetic l uses for this technology include detection of items for commercial loss prevention, smuggling and screening at government buildings and airport security checkpoints. Several countries employ the scanners for security.


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A Millimeter-wave TunneLadder TWT Download PDF EPUB FB2

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From the Back Cover A gyrotron traveling-wave amplifier (gyro-TWT) with the high-power and A Millimeter-wave TunneLadder TWT book capabilities is considered as a turn-on key for next generation high-resolution radar.

The book presents comprehensive theory, methods, and physics related to : Chao-Hai Du. A gyrotron traveling-wave amplifier (gyro-TWT) with the high-power and broad-band capabilities is considered as a turn-on key for next generation high-resolution radar.

The book presents the most advanced theory, methods and physics in a gyro-TWT. The most challenging problem of instability. A millimeter-wave tunneladder TWT. By D. Wilson. Abstract. A millimeter-wave traveling wave tube (TWT) was developed using a dispersive, high-impedance forward wave interaction structure based on a ladder, with non-space-harmonic interaction, for a tube with high gain per inch and high efficiency.

The 'TunneLadder' interaction structure Author: D. Wilson. A gyrotron traveling-wave amplifier (gyro-TWT) with the high-power and broad-band capabilities is considered as a turn-on key for next generation high-resolution radar.

The book presents the most advanced theory, methods and physics in a gyro-TWT. The most challenging problem of instability competition has been for the first time addressed in a focused and systematic way and reported via.

A millimeter-wave tunneLadder TWT. By A. Scott, A. Jacquez, A. Karp and D. Wilson. Abstract. A millimeter wave traveling wave tube was developed using a dispersive, high impedance forward interaction structure based on a ladder, with non-space harmonic interaction, for a tube with high gain per unit length and high efficiency.

The TunneLadder Author: A. Scott, A. Jacquez, A. Karp and D. Wilson. A millimeter-wave TWT was developed using a dispersive, high-impedance forward wave interaction structure based on a ladder, with non-space-harmonic interaction, for a tube with high gain per inch and high efficiency.

The 'Tunneladder' interaction structure combines ladder properties modified to accommodate Pierce gun beam optics on a radially magnetized PM focusing by: 1. In a gyrotron traveling-wave tube amplifier (gyro-TWT) circuit, one of the cyclotron harmonic couples with an eigen wave mode.

Such a beam-wave coupling forms a growing instability mechanism. A novel method of millimeter-wave traveling wave tube (TWT) slow-wave circuit fabrication, employing laser micromachining and the in situ growth of diamond studs as an insulating dielectric, has. PUBSTRUCK: a tour of Central coast hotels / Greg Tunn ; Susan Buck, book design and type setting ; Bruc A Millimeter-wave TunneLadder TWT [microform] / A.

Jacquez [et al.] For the securing of 30 tunne of Lead for his Ma[jes]t[y's] Seruice [electronic resource]. In this paper, five modified Tunneladder slow-wave structures (SWS), the ridge-loaded stub-supported meander line with circular electron tunnel (CET-RSML), ring-plane frame line (RPFL), the ridge-loaded thick ladder line (RLTLL), the ridge-loaded pole-piece folded-waveguide circuit (RLPFWL), and the double-period Tunneladder line (DPTL) were by: 6.

Millimeter-Wave Gyrotron Traveling-Wave Tube Amplifiers Chao-Hai Du, Pu-Kun Liu (auth.) A gyrotron traveling-wave amplifier (gyro-TWT) with the high-power and broad-band capabilities is considered as a turn-on key for next generation high-resolution radar.

Millimeter-Wave Integrated Circuits delivers a detailed overview of MMIC design, specifically focusing on designs for the millimeter-wave (mm-wave) frequency range. The scope of the book is broad, spanning detailed discussions of high-frequency materials and technologies, high-frequency devices, and the design of high-frequency circuits.

The design material is supplemented as appropriate by 5/5(2). Millimeter Wave TWT Life Test Monitor Paperback – January 1, by Leon L. Stevens (Author) See all formats and editions Hide other formats and editions. Price New from Used from Paperback "Please retry" $ $ $ Paperback $ Author: Leon L.

Stevens. Abstract: The development and microfabrication of a millimeter-wave ring-bar slow-wave structure is presented. Dimensional measurements and subsequent HFSS analyses were completed to predict the impact of fabrication errors on phase velocity and interaction : Sean Sengele, Marc Barsanti, Tom Hargreaves, Carter Armstrong, John H.

Booske, Yue Ying Lau. A MILLIMETER-WAVE /,v-3 / S_ _,3 TUNNELADDER TWT FINAL REPORT D. Wilson Varian Associates, Inc. Palo Alto, California October Prepared for Lewis Research Center Under Contract NAS NalJonat Aeronauhcs and Space Admm_strahon Lewis Research Center Cleveland Ohio AC (NASA-CR) A MILLIMETER-WAVE TUNNELADDER.

Jacquez A,Karp A,Scott A.A millimeter-wave tunneladder TWT[C].London:International Electron Devices Meeting, Wilson D,Jacquez A,Andker progress in millimeter-wave tunneladder TWTS[C].California:International Electron Devices Meeting, Kosmahl H G,Palmer R ic analysis approach to the Tunneladder-a modified Karp circuit.

Abstract: A challenge of high-power millimeter wave TWT is to realize high-power operation without incurring oscillation from backward-wave (BW) interaction.

In this paper, the influences of beam parameters such as voltage, current and radius and helix structure parameters of pitch profile on BW oscillation are investigated. Millimeter-Wave Gyrotron Traveling-Wave Tube Amplifiers eBook: Chao-Hai Du, Pu-Kun Liu: : Kindle Store.

A traveling-wave tube (TWT, pronounced "twit") or traveling-wave tube amplifier (TWTA, pronounced "tweeta") is a specialized vacuum tube that is used in electronics to amplify radio frequency (RF) signals in the microwave range. The TWT belongs to a category of "linear beam" tubes, such as the klystron, in which the radio wave is amplified by absorbing power from a beam of electrons as it.

A comprehensive study of microwave vacuum electronic devices and their current and future applications While both vacuum and solid-state electronics continue to evolve and provide unique solutions, emerging commercial and military applications that call for higher power and higher frequencies to accommodate massive volumes of transmitted data are the natural domain of vacuum electronics.In chapter 6, we discuss familiar microwave tubes: TWT including its bandwidth and efficiency, thermal management, backward-wave excitation and its suppression using an attenuator, extension of operating frequency to the millimeter-wave regime, RF input/output coupling, control of gain and phase variations, space qualification, multi-mode operation, performance improvement by external means.A millimeter-wave TWT was developed using a dispersive, high-impedance forward wave interaction structure based on a ladder, with non-space-harmonic interaction, for a .