| Microwave Solid-State Device Studies. |
MAR 1970 |
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| Authors:
G. I. Haddad; MICHIGAN UNIV ANN ARBOR ELECTRON PHYSICS LAB
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 | The objectives were to investigate theoretically and experimentally new solid-state phenomena and techniques having application to microwave generation, amplification and control. (Author) |
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| Microwave Integrated-Circuit Noise Source. |
DEC 1969 |
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| Authors:
Louis I. Farber; TEXAS INSTRUMENTS INC DALLAS
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| The report covers the last six months of development activity on a microwave integrated-circuit noise source. The work has involved the redesign, fabrication, and testing of a noise source, which includes a temperature-compensated-current source driver for the noise diode, and a microwave circuit on which to mount the diode. For simplification, the derivation of formulas and measurement procedures are repeated in the report along with the test results and redesign ... |
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| Microwave Solid-State Device Studies. |
NOV 1969 |
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| Authors:
G. I. Haddad; MICHIGAN UNIV ANN ARBOR ELECTRON PHYSICS LAB
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| The objectives are to investigate theoretically and experimentally new solid-state phenomena and techniques having application to microwave generation, amplification and control. Current tasks under the program are: (a) Microwave noise emission from indium antimonide (A method of estimating mobility from the transverse magnetoresistance characteristics is included in report); (b) Instabilities in germanium; (c) Transverse and magnetic field effects on instabilities in bulk semiconductors; (d) Gunn-effect oscillators and frequency converters (Includes ... |
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| Characterization of the Microwave Tensor Permeability of Partially Magnetized Materials. |
FEB 1969 |
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| Authors:
Jerome J. Green; Ernst Schlomann; Frank Sandy; Joseph Saunders; RAYTHEON CO WALTHAM MA RESEARCH DIV
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| The goals of the present program are to study how the permeability of partially magnetized materials depends on material parameters and to catalogue the loss properties of a number of the important phase shifting materials. The results of the last half year are reported in two sections. The first section deals with the low power loss parameter of the demagnetized state as measured on a number of materials across a ... |
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| Broadband High Burnout Solid State Integrated X-Band Limiter and Balanced Mixer. |
31 JAN 1969 |
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| Authors:
Ronald E. Blight; MICROWAVE ASSOCIATES INC BURLINGTON MA
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| A broadband C - X-band integrated Schottky diode balanced mixer and varactor limiter was developed. When both units are connected, they are capable of withstanding peak powers of 100 watts and have a noise figure of 8 dB max. The operating band width of this microwave component combination is from 3.5 - 10.5 GHz. (Author) |
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| MICROWAVE DEVICES UTILIZING ORIENTED CUBIC FERRIMAGNETIC MATERIALS. |
DEC 1967 |
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| Authors:
Donald R. Taft; SPERRY MICROWAVE ELECTRONICS CLEARWATER FL
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| The efforts on this program were directed toward the fabrication and evaluation of oriented polycrystalline cubic ferrimagnetic materials for application in microwave devices. The materials investigated were polycrystalline lithium ferrite, nickel ferrite, nickel zinc ferrite, cobalt ferrite, magnesium manganese aluminum ferrite, magnesium manganese ferrite, yttrium iron garnet, and 20% aluminum-20% gadolinium substituted yttrium iron garnet. The factors influencing alignment, the procedures and parameter values used in the preparation of the ... |
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| MICROWAVE TRANSISTORS. |
NOV 1967 |
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| Authors:
Andy Anderson; David Boone; Harry Cooke; Charlie Dennis; Julius Lange; TEXAS INSTRUMENTS INC DALLAS SEMICONDUCTOR-COMPONENTS DIV
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| Planar double-diffused transistors were fabricated using phosphorus-doped silicon dioxide as a mask. Some of the better devices exhibited the following microwave performance: unilateral gains of 10.0 dB at 3 GHz and 5.4 dB at 6 GHz; maximum available gains of 6.5 - 7.0 dB at 3 GHz and 2.0 - 2.2 dB at 6 GHz; noise figures of 6.6 - 7.4 dB at 3 GHz and 8.5 - 11.6 dB ... |
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| A LASER TRIGGERED HIGH-FREQUENCY HIGH POWER MICROWAVE CAVITY SWITCH. |
AUG 1967 |
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| Authors:
Gerald Attilio Masclet; CORNELL UNIV ITHACA NY SCHOOL OF ELECTRICAL ENGINEERING
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| An experimental, laser-triggered microwave switch is described which is based upon the interaction between an electromagnetic wave and a laser-induced electron and ion beam in the gap of a re-entrant microwave cavity. Peak power at X-band up to 60 kw, 0.5 microseconds pulse width and 5000 cps repetition rate was switched, and two regimes of operation were studied: a thermionic regime in which ion generation was at a minimum, and ... |
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| MICROWAVE TRANSISTORS. |
JUN 1967 |
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| Authors:
Andy Anderson; David Boone; Harry Cooke; Charlie Dennis; Julius Lange; TEXAS INSTRUMENTS INC DALLAS SEMICONDUCTOR-COMPONENTS DIV
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| Planar double-diffused germanium transistors were fabricated using phosphorus-doped silicon diode as a mask. Base-collector time constants below 1.2 psec and frequencies above 7 GHz have been achieved consistently. The noise-figure objective of 5 dB at 3 GHz has been met within 0.5 dB. Gains of over 6.5 dB at 3 GHz have been achieved consistently. Silicon nitride masks and heavily doped base contact areas are being investigated. Improved versions of ... |
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| INVESTIGATION OF ELECTROLYTICALLY SEPARATED MICROWAVE CONDUCTING LAYERS (UNTERSUCHUNG ELEKTROLYTISCH ABGESCHIEDENER MIKROWELLEN-LEITSCHICHTEN). |
31 MAR 1967 |
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| Authors:
M. Matok; FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
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| Galvanically separated silver coverings on a copper alloy base were investigated for their microwave conducting properties through measurements of the polarization potential, micro-hardening and the quality factor, fine structure x-ray analysis and metallographic investigations. (Author) |
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| DESIGN OF MICROWAVE FILTER NETWORKS. |
FEB 1967 |
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| Authors:
D. K. Adams; J. C. Palais; E. G. Cristal; L. Young; STANFORD RESEARCH INST MENLO PARK CA
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| The two subjects discussed in this report are: (1) tunable upconverter design and (2) the coupling for partially decoupled round rods between parallel ground planes. The latter data should be useful for reducing the size of UHF and microwave components using pairs or arrays of coupled transmission lines. The up-converter section develops design curves for maximum gain over a prescribed tuning range. The curves allow the designer an arbitrary choice ... |
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| MICROWAVE FERRITE INSTRUMENTS ON A 3 CM BAND (MIKROFALOWE PRZYRZADY FERRYTOWE NA PASMO 3 CM). |
07 DEC 1966 |
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| Authors:
S. Stuchly; A. Kraszewski; FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
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| The article reviews three basic phenomena which are utilized in the design and construction of microwave devices: the Faraday-rotation of the plane polarization; the irreversible phase shift in a wave-guide with a transversely magnetized ferrite; and the gyro-magnetic resonance. Existing ferrite devices for microwave application are classified and two of the irreversible types are described in detail; these are insulators and circulators. A total of ten models designed and built ... |
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| STUDY OF MICROWAVE GENERATION BY MEANS OF INTERACTION WITH ANISOTROPIC MEDIA. |
NOV 1966 |
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| Authors:
J. Osepchuk; J. Simpson; RAYTHEON CO WALTHAM MA RESEARCH DIV
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| Tests are made on a number of anisotropic materials in the microwave test fixture. As in previous tests, some difficulty is encountered in making contact between adjacent slices of the test materials. Good comparison to theory is obtained for high-loss materials but higher conductivity materials show excessive loss. The low-loss layered materials previously described have not yet been received. Measurement techniques for slow-wave tests are refined in preparation for studies ... |
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| INVESTIGATION OF NEW CONCEPTS AND LINEAR BEAM TECHNIQUES FOR MICROWAVE GENERATION. |
OCT 1966 |
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| Authors:
G. C. Dalman; L. Eastman; L. A. MacKenzie; CORNELL UNIV ITHACA NY SCHOOL OF ELECTRICAL ENGINEERING
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| Experiments on a laser triggered transmission cavity have shown that good switching action can occur at high levels of X-band power. A beam plasma test vehicle was developed for the final phase of this task. GaAs Gunn diode ohmic contacts using an eutectic mixture of gemanium and gold were developed. Tin-nickel layered ohmic contacts showed greatly improved operating lifetime. Gunn diodes were operated as oscillators at approximately twice the threshold ... |
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| NOVEL MICROWAVE FILTER DESIGN TECHNIQUES. |
SEP 1966 |
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| Authors:
David K. Adams; L. A. Robinson; A. Karp; Edward G. Cristal; Leo Young; STANFORD RESEARCH INST MENLO PARK CA
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| 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 ... |
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| MICROWAVE TRANSISTORS. |
SEP 1966 |
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| Authors:
George Johnson; David Boone; Julius Lange; TEXAS INSTRUMENTS INC DALLAS SEMICONDUCTOR-COMPONENTS DIV
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| An analysis of the S- and C-band performance specifications is presented. Epitaxial structures of n on n(+) and p on n on n(+) have been grown. A spreading resistance probe has been assembled for evaluation of p- on n-type germanium epitaxial deposits. Planar bases have been successfully formed by both arsenic and antimony isolation diffusion in epitaxial and diffused layers. A heavy-doping approach to base and emitter formation was initiated. ... |
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| A MICROWAVE TECHNIQUE FOR STUDYING DETONATION PHENOMENA. |
13 SEP 1965 |
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| Authors:
Edgar G. Johnson; ROHM AND HAAS CO HUNTSVILLE AL REDSTONE ARSENAL RESEARCH DIV
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| A microwave technique was developed for studying shock phenomena in condensed phases. The microwave energy reflected by the shock front was used to determine velocities of both reactive (detonation) and non-reactive shocks. This technique used standard microwave components and an expendable, dielectric rod waveguide as a transmission line to the sample under study. The oscillogram of the output of a crystal detector is a continuous displacement-time tracke of the shock ... |
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| A SUMMARY OF CURRENT RESEARCH IN THE MICROWAVE RESEARCH INSTITUTE PROGRAMS. |
31 MAR 1965 |
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| Authors:
POLYTECHNIC INST OF BROOKLYN NY MICROWAVE RESEARCH INST
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| This report summarizes the research programs at the Microwave Research Institute of the Polytechnic Institute of Brooklyn from 1 October 1964 - 31 March 1965. Each activity reports in summary fashion specific results obtained during the period in question; the sponsoring agency for the activity is individually acknowledged. Contributions are compiled under six headings: Electromagnetics; Plasma Electrophysics and Electronics; Solid State and Materials Research; Microwave Circuits; Network Theory; and Systems, ... |
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| RESEARCH ON DIELECTRICS FOR MICROWAVE ELECTRON DEVICES. |
NOV 1964 |
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| Authors:
L. Feinstein; J. Bordeaux; D. Peters; C. Pultzer; STANFORD RESEARCH INST MENLO PARK CA
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| The purpose of this research was to study the properties of dielectrics used in microwave devics with special emphasis on materials used for microwave windows. This report reviews the results of a study of the transport and breakdown properties of aluminum oxide and of methods of growth of this dielectric from the vapor phase in an evacuated system. Growth of aluminum oxide films ranging in thickness from 1000 to 5000 ... |
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| BASIC RESEARCH IN MICROWAVE DEVICES AND QUANTUM ELECTRONICS. |
NOV 1963 |
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| Authors:
H. K. Detweiler; M. E. El-Shandwily; B. Ho; G. Hok; J. E. Rowe; MICHIGAN UNIV ANN ARBOR
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| S- AND L-BAND FERRITE LIMITER PROGRAM. |
01 APR 1960 |
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| Authors:
HUGHES AIRCRAFT CO CULVER CITY CALIF
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| The limiter program is directed toward the development of a practical microwave limiter for the S- and L-band regions by utilization of the nonlinear, high-power characteristics of ferrites. The design objectives call for a passive broadband device which should provide approximately 60 db of attenuation to high-power signals in the 100 kilowatt range and 1.0 db (or less) loss at low power (less than 75 mw). The areas of investigation ... |
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