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A Wide-Band UHF Traveling-Wave Variable Reactance Amplifier

IRE Transactions on Microwave Theory and Techniques 1960年第3期8卷 351-361页

作者： Honey, R.C. Jones, E.M.T. Stanford Research Institute Menlo Park Calif. United States

The techniques developed for designing periodically loaded traveling-wave parametric amplifiers using variable-reactance diodes are described in detail. An amplifier was built and tested with two different sets of eight diodes. The performance of the amplifier with each set of diodes agrees substantially with the theoretical predictions, the measured noise figures being about 1.2 db higher than the theoretical values in each case. The gain of the second amplifier varied from a minimum of 6.7 db to more than 13 db over the band from 550 to 930 mc, with a measured noise figure of 2.3 db for wideband noise inputs in the middle of the band, corresponding to about 4.9 db for single-frequency inputs. COPYRIGHT ©1960—THE INSTITUTE OF RADIO ENGINEERS, INC.

关键词： Broadband amplifiers Diodes Noise figure Microwave amplifiers Eigenvalues and eigenfunctions Propagation losses Noise measurement Transmission line theory distributed parameter circuits Inspection

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Hybrid integrated 10-W CW broadband power source at S-band

Hybrid integrated 10-W CW broadband power source at S-band

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IEEE International Conference on Solid-State circuits (ISSCC)

作者： E. Belohoubek D. Stevenson A. Rosen Microwave Applied Res. Lab./RCA Princeton N.J. USA

A hybrid integrated power source consisting of an amplifier-multiplier chain that develops 10-W CW over a 10% bandwidth at 3 GHz with a power input of 0.5 W at 1500 MHz will be discussed.

关键词： Packaging Power transmission lines Varactors Driver circuits Microstrip distributed parameter circuits Frequency Circuit testing Impedance Coupling circuits

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The Impedance of a Wire Grid Parallel to a Dielectric Interface

引用

IRE Transactions on Microwave Theory and Techniques 1957年第2期5卷 99-102页

作者： Wait, James R. National Bureau of Standards Boulder Colo. United States

Analysis is given for the problem of reflection of a plane wave at oblique incidence on a wire grid which is parallel to a plane interface between two homogeneous dielectrics. It is assumed that the wire grid is a periodic structure and consists of thin cylindrical wires of homogeneous material. The equivalent circuit is derived where it is shown that the space on either side of the interface can be represented by a transmission line, and the grid itself is represented by a pure shunt element across one of the lines. COPYRIGHT © 1957–THE INSTITUTE OF RADIO ENGINEERS, INC.

关键词： Wire Gratings Reflection Surface impedance Strips Periodic structures Dielectric materials Equivalent circuits distributed parameter circuits Transmission lines

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