Last edited by Akinokinos
Monday, August 3, 2020 | History

2 edition of Optimization of SIS mixer elements found in the catalog.

Optimization of SIS mixer elements

Optimization of SIS mixer elements

final report.

  • 343 Want to read
  • 21 Currently reading

Published by Dept. of Electrical Engineering, School of Engineering and Applied Science, University of Virginia, For sale by the National Technical Information Service in Charlottesville, Va, [Springfield, Va .
Written in English

    Subjects:
  • Superconductors.,
  • Millimeter astronomy.

  • Edition Notes

    SeriesNASA-CR -- 180710., NASA contractor report -- NASA CR-180710.
    ContributionsUnited States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15281734M

    We present here the performance of SIS mixers for upgrade of CHAMP+ array instrument on APEX telescope. In total it includes 14 mixers: 7 for the low band ( GHz) and 7 for the high band. As a part of Onsala development of a single sideband mixer for ALMA band 7 ( GHz), we present the design of a prototype sideband separation mixer for GHz. The mixer is designed using a quadrature scheme with two identical DSB SIS mixers pumped by a local oscillator (LO) with 90° phase difference. The mixer employs a new.

    @article{osti_, title = {Numerical simulation of experimental data from planar SIS mixers with integrated tuning elements}, author = {Mears, C A and Hu, Qing and Richards, P L}, abstractNote = {We have used the full Tucker theory including the quantum susceptance to fit data from planar lithographed mm-wave mixers with bow tie antennas and integrated RF coupling elements. mixer elements has led to advancements in chip fabrication and chip mounting technologies. We are developing these technologies to simplify the process of assembling mixers used in high frequency receiver blocks, as well as to improve device performance and more seamlessly integrate the .

    ADVERTISEMENTS: Read this article to learn about Management Information System (MIS). After reading this article you will learn about: 1. Meaning of MIS 2. Elements of MIS 3. Objectives 4. Importance 5. Limitations. Meaning of Management Information System: Management information system is a system, which is designed to provide information to various organizational levels, to [ ]. Abstract: It is a well known fact that SIS mixers exhibit gain compression when the output IF voltage swing becomes non-negligible compared to the width of the photon step. In this paper, we show that under certain circumstances, SIS mixers can also exhibit the inverse phenomenon-gain expansion. This non-linear behavior has been observed experimentally when the output power-voltage curve of an.


Share this book
You might also like
Far East

Far East

An answer to the letter addressed by Francis Riollay

An answer to the letter addressed by Francis Riollay

Milking machine checklists.

Milking machine checklists.

American performance of The Cenci

American performance of The Cenci

That they may live

That they may live

Drawings of the early Flemish school

Drawings of the early Flemish school

dialogue against the fever pestilence

dialogue against the fever pestilence

Parliament of commerce

Parliament of commerce

Veerinder on taxation

Veerinder on taxation

Newburn local plan

Newburn local plan

Makeup Shake-Up Prepack

Makeup Shake-Up Prepack

Acquisition reform

Acquisition reform

review of the actual and expected consequences of family size

review of the actual and expected consequences of family size

Optimization of SIS mixer elements Download PDF EPUB FB2

Get this from a library. Optimization of SIS mixer elements: final report. [United States. National Aeronautics and Space Administration.;]. Optimization of SIS mixer elements. By Robert J. Mattauch.

Abstract. Superconductor-Insulator-Superconductor (SIS) quantum mixers provide an approach to millimeter wave mixing - potentially offering conversion gain, a low local oscillator power demand, and potential mixer noise temperatures near the quantum limit.

The development of a reliable Author: Robert J. Mattauch. Design and optimization of NbCN/PbBi mixer elements for heterodyne receivers.

By R. Mattauch, A. Lichtenberger and A. Lewis. Abstract. Superconductor-Insulator-Superconductor (SIS) quantum mixers provide a relatively new approach to millimeter wave mixing potentially offering conversion gain, a low local oscillator power demand and.

High-Frequency Circuit Simulation, Including SIS Mixers and Superconducting Elements John Ward, Frank Rice, Goutam Chattopadhyay, and Jonas Zmuidzinas California Institute of Technology,Pasadena, CAUSA.

Abstract "SuperMix" is a software library written to aid in the calculation and optimization of the signal. The use of inductive elements to tune out the junction capacitance in SIS mixers is examined.

Two new integrated tuning structures are introduced which overcome the limitations of earlier designs. This is a preview of subscription content, log in to check by:   In this chapter, we review the fundamental SIS mixer theory, to provide a theoretical background for the subsequent studies presented throughout this thesis.

This includes the quantum tunnelling mechanisms that occurs in an SIS junction, and the general principle of SIS. elements when complete. The ALMA Fron t End is designed to accommodate up to 10 receiver bands covering most of the wavelength range from 10 to mm.

Superconductor-insulator-superconductor (SIS) mixers are employed for Bands 3 (~3 mm) through 10 (~ mm). Ordinarily the SIS bias is selected to achieve the lowest receiver noise temperatures.

work. For the realistic SIS mixers considered here, the five-frequency approximation gives results very close to those of the eight-harmonic solution. Use of these approximations, where appropriate, considerably reduces the computational effort needed to analyze an SIS mixer, and allows the design and optimization of mixers using a personal.

SIS MIXER ANALYSIS WITH NON-ZERO INTERMEDIATE FREQUENCIES S.-K. Pan and A. Kerr National Radio Astronomy Observatory* Charlottesville, VA ABSTRACT Most design and analysis of Superconductor-Insulator-Superconductor (SIS) mixers has been based on Tuckers quantum theory of mixing, always with the assumption of a zero intermediate frequency.

"SuperMix" is a software library written to aid in the calculation and optimization of the signal and noise performance of high-frequency circuits, especially those including superconductors and superconducting tunnel junctions.

Using this library, C++ programs can be written to simulate circuits of arbitrary size, complexity, and topology. The library includes an optimizer which can minimize. SuperMix is an extensive C++ software library written to aid in the design and optimization of high-frequency circuits.

SuperMix: A Flexible Software Library for High-Frequency Circuit Simulation, Including SIS Mixers and Superconducting Elements; Fast Harmonic Balance of SIS Mixers with Multiple Junctions and Superconducting Circuits.

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): SuperMix" is a software library written to aid in the calculation and optimization of the signal and noise performance of high-frequency circuits, especially those including superconductors and superconducting tunnel junctions.

Using this library, C++ programs can be written to simulate circuits of arbitrary size. Books at Amazon. The Books homepage helps you explore Earth's Biggest Bookstore without ever leaving the comfort of your couch.

Here you'll find current best sellers in books, new releases in books, deals in books, Kindle eBooks, Audible audiobooks, and so much more. The Tucker model has been used to simulate the performance of high-T c based, SIN and SIS quasiparticle mixers, operating as photon detectors in the THz realistic numerical simulations utilipe experimentally measured, current vs voltage (I-V) tunneling characteristics from point contact junctions on HgBa 2 CuO 4, (T c = 95 K) phich have displaped BCS-like characteristics.

Then, we calculated the elements of the 5 5 small-signal conversion matrix using the close-form expressions given in [16], and subsequently derived the IF output impedance of the SIS mixer by.

on the SIS mixer IF output impedance, which can be used for verification and optimization of the following cryogenic IF receiver section. Here, we describe a measurement system to characterize the IF impedance of SIS mixers, present experimental results, and compare electromagnetic simulations combined with three.

However, this requires the two mixers to be biased oppositely and presents undesirable IF impedance levels to the in-phase and out-of-phase IF components from the individual mixers. The use of an IF hybrid, as shown in Fig. 1, provides a desirable IF impedance environment for the SIS mixer elements while allowing them to be biased by a common.

Abstract. This chapter discusses the theory of countercurrent extraction separation of rare earths, which is established by Gangxian Xu, including the way of calculation of the process parameters using the equations and optimization of a process, the way of dynamic simulation of a process to verify the parameters of the process designed by static methods to achieve the information from the.

Abstract: We have developed an SIS mixer based on a 3-junction series distributed array. In this mixer layout, the three junctions are connected together by passive network elements, such that each junction is subjected to different local oscillator (LO).

In this work, we consider a microfluidic mixer that uses hydrodynamic diffusion stream to induce the beginning of the folding process of a certain protein. To perform these molecular changes, the concentration of the denaturant, which is introduced into the mixer together with the protein, has to be diminished until a given value in a short period of time, known as mixing time.

belitsky Tuning Circuit for NbN SIS Mixer, V. Belitsky and E. Kollberg betz A Practical Schottky Mixer for 5 THz (Part II), A.

Betz and R. Boreiko bin Antireflection-Coated Silicon Lenses for Low Noise GHz Quasioptical SIS Mixers, M. Bin, M. Gaidis, H.G. LeDuc, D. Miller, 1.Such speeds will make complex nonlinear optimization calculations a routine part of SIS receiver design.

I. Introduction As the state of the art in submillimeter wave heterodyne mixers utilizing supercon-ductor-insulator-superconductor (SIS) devices has progressed, SIS mixers are rapidly evolving to ever more complex and wide bandwidth designs.SIS mixers can be realized with positive output resistance, input match, and a small amount of gain (a few dB, SSB) [5].

The output resistance may be high and an I.F. amplifier with high Ropt and low Rin appears to be desirable. If an isolator is inserted between the mixer and I.F. amplifier, then Ropt = Rin at the mixer-isolator interface [6].