WorldCat Identities

Cristal, Edward G.

Works: 7 works in 12 publications in 2 languages and 11 library holdings
Roles: Author
Publication Timeline
Most widely held works by Edward G Cristal
Microwave Network Synthesis by Edward G Cristal( )

4 editions published between 1972 and 1973 in English and held by 3 WorldCat member libraries worldwide

SMISSION LINES, INTEGRATED CIRCUITS, MATHEMATICAL MODELSNETWORK SYNTHESIS, *ACOUSTIC WAVES, *SURFACE WAVES, INTERDIGITAL TRANSDUCERS, SURFACE WAVES, EQUIVALENT CIRCUITSThe results of a theoretical and experimental study of the surface-acoustic-wave grating transducer are presented. The results of a study of several transducer structures that were designed to result in enhanced excitation of surface acoustic waves at odd-harmonic frequencies are also presented. Equivalent-circuit models for a 'hybrid' multisection grating structure having one floating electrode per section and for an interdigital structure having an arbitrary 'mark-to-space' ratio are described. A compact channel-dropping-filter geometry consisting of hairpin bandpass and folded-line bandstop filters is described for stripline and microwave integrated circuits. Design tables and theoretical and experimental data for a trial channel-dropping filter are presented. (Author Modified Abstract)

2 editions published between 1967 and 1968 in English and held by 2 WorldCat member libraries worldwide

Equations are derived for determining the characteristic impedance, propagation velocity, and attenuation constant of microstrip transmission lines. Analysis of the factors influencing measurements on the real part of the input admittance of a piezoelectric transducer is presented. It has been shown that, unless a rather large series resistance is present, measurements of conductance as a function of frequency yield information from which the value of the electromechanical coupling coefficient can be determined. The successful fabrication of thin-film CdS microwave acoustic transducers is reported. The measured loss characteristics of these transducers are described and the effects of a tuner and transducer mount are described. The feasibility of depositing thin films of lithium niobate by means of chemical vapor deposition has been demonstrated. The vapor deposition technique is described. Bandwidth curves are given, for Mumford's maximally flat transmission line bandpass filter. When used in conjunction with Mumford's tabulated design parameters, the curves give filter attenuation in all regions of the stop band, provided that the attenuation is greater than 15 dB. (Author)
Microwave Synthesis Techniques( Book )

2 editions published between 1968 and 1969 in English and held by 2 WorldCat member libraries worldwide

In the 1968 Annual Report the nature of slot-line and possible microwave integrated-circuit applications was discussed. On the present report, 'second-order' solutions in the basic shot-line parameters are described and experimental confirmation is shown. The theory of the inverted-common-collector (ICC) transistor circuit and its application to microwave bandpass filters is briefly reviewed. Much attention is focused on the practical design of ICC circuits. Also, their temperature stability is investigated. The application of ICC circuits to frequency multiplexing and impedance matching is discussed. Corrected formulas are given for the numerical solution of coupled microstrip transmission lines. New data for a trial 10-dB microstrip directional coupler is presented. (Author)
Novel microwave filter design techniques : Fifth quarterly progress report by G. L Matthaei( Book )

1 edition published in 1966 in English and held by 1 WorldCat member library worldwide

Earlier work previously reported in Quarterly Progress Reports 1, 2, and 3 is briefly summarized. This work included research on comb-line filters with capacitively coupled terminations; two types of UHF magnetically tunable filters having spherical and disk-shaped resonators; elliptic-function bandstop filters in strip transmission line with quarterly wave and half-wave stubs; circular-iris susceptances in circular TE sub 01-mode waveguide; unloaded-Q measurements in rectangular and circular waveguides with open and conventional walls; nomograms for asymmetric spur-line and parallel-coupled sections; coupled transmission-line couplers with coupled lines of unequal impedances; and data on modified re-entrant directional couplers. The third section of the report describes the application of novel microwave techniques to up-converter design, which has led to the development of a 500- to 1300-MHz tunable up-converter with 20-MHz instantaneous bandwidth. The design method is applicable to other tuning ranges and involves simple construction methods. In the next section, experimental results on a trial capacitively coupled comb-line filter are presented. The trial filter was designed to have a center frequency of 150 MHz and a fractional bandwidth of 0.075. Finally, measured values are given for the unloaded Q of two open-wall cavities. For the TE sub 011-mode in a circular cavity, the cylindrical wall is replaced by a single radial plate midway between the input and output walls. The dissipation loss associated with this open wall is 2.4 times that associated with a solid cylindrical wall. The resulting unloaded Q for an optimum open-wall is 54 percent of that for an optimum solid-wall cavity. (Author)
High power microwave filters for the suppression of spurious energy( Book )

1 edition published in 1965 in English and held by 1 WorldCat member library worldwide

A new circuit for the 3-db short-slot sidewall coupler was tested as a harmonic pad. A new type of low-pass waveguide filter that attenuates by dissipation and has a very wide stop band is described. A 'trapped-mode' band-pass filter is described, in which the spurious responses due to higher-order resonances are eliminated by heavily damping all but the fundamental resonance, thus realizing a very wide stop band. A non-reflecting diplexer-type waveguide filter was synthesized, using two complementary filters, one band-pass filter and one band-stop filter. Numerical data are presented in graphical form on the characteristic impedance of coaxial lines consisting of a circular inner conductor and a rectangular outer conductor. Wire grid waveguide bolometers are shown to be similar to, but more stable and reproducible than, thin-film bolometers. The modes of a confocal resonator are found to be separable because of their unique transverse spatial distribution so that, despite a high degree of mode degeneracy, highpower millimeter-wave filters appear realizable. Lowpass and high-pass filters can be built at millimeter wave frequencies using stacks of dielectric plates. A multi-harmonic rejection filter, has been designed by an exact method
Coaxial absorption leaky-wave filter for high power application( Book )

1 edition published in 1962 in English and held by 1 WorldCat member library worldwide

Experimental data related to the design of a coaxial absorption leaky-wave filter are presented. Power coupling coefficients of rectangular slots, dumbbell slots, and various slot combinations which couple a coaxial-line to a side waveguide, are determined. The effects on slot coupling of the dimensions of the side waveguide, and of a load mismatch in the side waveguide are investigated. An experimental coaxial leaky-wave filter and two modifications of this filter were constructed and tested for insertions loss and VSWR for a TEM wave over a 10:1 frequency band. (Author)
A continuously variable coaxial-line attenuator by Edward G Cristal( )

1 edition published in 1980 in Spanish and held by 1 WorldCat member library worldwide

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  Kids General Special  
Audience level: 0.98 (from 0.89 for Novel micr ... to 0.99 for Novel micr ...)

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