Results 231 to 240 of about 227,325 (292)

A generation of microwave ferrite devices

Proceedings of the IEEE, 1988
The development of microwave ferrite materials and devices over the last thirty years is traced. The status of materials, devices, and theoretical understanding prevalent in the mid-1950s is first reviewed. Developments in materials engineering of garnets and lithium ferrites in the 1960s and 1970s are described, along with the evolution of circulators
G P Rodrigue
exaly   +2 more sources

Multiferroic Based Microwave Devices

Advanced Materials Proceedings, 2016
Recently, there has been significant interest on the fundamental science and technological applications of complex oxides and multiferroics. Low-power multiferroic have potential to fabricate and characterize frequency tunable, compatible with MMIC Technology, small light-weight for hand-held operation, cost-effective, high-frequency (>10GHz), devices ...
Vinay Sharma, Priyanka Rani, Bijoy K. Kunar   +2 more
openaire   +1 more source

Microwave Magnetic Film Devices

2000
Publisher Summary This chapter discusses the applications of magnetic films in microwave devices. Magnetic film microwave devices are based on a broad class of ferrimagnetic materials commonly referred to as “ferrites.” Both ferro- and ferrimagnetic materials exhibit the hysteresis effect, which is a nonlinear relationship between the applied ...
Douglas B. Chrisey, Paul C. Dorsey, J. Douglas Adam, Harry Buhay   +3 more
openaire   +1 more source

Optically controlled microwave devices

International Topical Meeting on Microwave Photonics. MWP '96 Technical Digest. Satellite Workshop (Cat. No.96TH8153), 2002
In this paper, a review is given of recent advances in optically controlled microwave and millimeter wave devices and circuits. Special emphasis will firstly be laid on the physical background of optical effects in semiconductor materials and structures.
openaire   +1 more source

Microwave CMOS-devices and circuits

Proceedings of the IEEE 1998 Custom Integrated Circuits Conference (Cat. No.98CH36143), 2002
In this paper we discuss the design of front end CMOS RF circuits using microwave concepts. The focus of this paper is directed towards understanding the microwave properties of CMOS devices in relation to designing microwave circuits. The concepts within this paper will be emphasized through pertinent examples drawn from the RF research activities at ...
openaire   +1 more source

Microwave avalanche devices

Journal of Physics E: Scientific Instruments, 1974
Avalanche diodes are finding an increasing number of applications as sources of microwave power in the frequency rane 1-100 GHz. There are two basic modes of operation; the IMPATT mode in which the diode behaves as a negative conductance in a resonant circuit, and the TRAPATT mode in which the diode acts as a fast switch which periodically discharges ...
openaire   +1 more source

Devices for microwave photonics

International Topical Meeting on Microwave Photonics. MWP '96 Technical Digest. Satellite Workshop (Cat. No.96TH8153), 2002
Microwave photonics has advanced greatly as a result of breakthroughs on many fronts. Breakthroughs in fiber amplifiers, sources and receivers have all resulted in greatly increased system performance, and significant evolution of microwave photonic networks has occurred. The author discusses these elements in turn.
openaire   +1 more source

Microwave semiconductor devices

Radio and Electronic Engineer, 1966
The paper examines some of the classes of microwave devices which are of current interest. Devices described are: frequency multipliers, up-converters, parametric amplifiers, tunnel diodes, backward diodes, hot electron devices and Gunn effect oscillators. Some of the problems and developments which the future may hold are discussed.
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Magnetism in Microwave Devices

Journal of Applied Physics, 1969
The functions of ferrite components in advanced microwave systems are briefly outlined, and the principal requirements described. The successful development of these sophisticated devices is the cumulative result of contributions from many areas of basic research and technology.
openaire   +1 more source

Microwave Heterojunction Devices

19th European Microwave Conference, 1989, 1989
High quality heterostructures, especially of compound semiconductors have realized superior performance microwave and millimeterwave devices to GaAs MESFETs. Activities on such heterojunction devices in Japan are reviewed and discussed. The works on modulation-doped heterostructure devices, hetero MISFETs, hetero junction bipolar transistors(HBTs) and ...
openaire   +1 more source