Stable CW amplification from C to X band frequencies has been obtained from stabilized GaAs transferred electron oscillators. Linear output has been found to exceed +20 dBm with 6-dB gain.
Stable CW amplification from C to X band frequencies has been obtained from stabilized GaAs transferred electron oscillators. Linear output has been found to exceed +20 dBm with 6-dB gain.
A method of analog circuit analysis is proposed that is based on the use of the transistor as its own dc model. Time-scaled carrier storage effects are simulated by capacitors that are driven, through operational ampl...
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A method of analog circuit analysis is proposed that is based on the use of the transistor as its own dc model. Time-scaled carrier storage effects are simulated by capacitors that are driven, through operational amplifiers, by voltages that are proportional to terminal currents.
A procedure is described for determining the attenuation and distortion of fault generated surges on transmission lines when the skin effects of conductor and earth are taken into account. The term which considers the...
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A procedure is described for determining the attenuation and distortion of fault generated surges on transmission lines when the skin effects of conductor and earth are taken into account. The term which considers the skin effect of earth has been modified and the results are compared with existing methods.
The basic micro strip, or non-symmetrical stripline geometry, has been investigated as a transmission line medium, and a number of types of transmission line components have been built utilizing microstrip constructio...
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The basic micro strip, or non-symmetrical stripline geometry, has been investigated as a transmission line medium, and a number of types of transmission line components have been built utilizing microstrip construction. Microstrip has found only sporadic applications, however, as designers generally chose the more shielded and lower loss stripline, coaxial or waveguide modes of propagation, with the availability of microwave transistors and other semiconductor devices usable well into the microwave frequency range, the microstrip transmission line was reevaluated because of its compatibility with the fabrication and installation of passive components and active devices on the same substrate with the transmission line. Some of the ceramic materials appear particularly attractive as a substrate from performance and economic standpoints. This paper covers some of the characteristics of microstrip transmission lines on homogeneous ceramic dielectric substrates and on the two dielectric substrate as is the case in glazed ceramics, some of the considerations in component and circuit design utilizing this medium will be discussed along with some examples of incorporating semiconductor devices with ceramic microstrip components to accomplish high performance microwave hybrid integrated circuitry.
A new oscillator for generating ultra-short waves, in which the conventional tank circuit is replaced by a portion of concentric transmission line, is described. Electrically, the tube structure forms an integral part...
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A new oscillator for generating ultra-short waves, in which the conventional tank circuit is replaced by a portion of concentric transmission line, is described. Electrically, the tube structure forms an integral part of the transmission line. For this the quantity √C/L for the tube must be the same as for the rest of the line, C and L being capacity and inductance per unit length of the line. A comparison of the closed oscillating circuit with the "standing wave oscillator" shows distinct advantages of the latter in the region of ultra-short waves. The mode of connecting the load to the oscillator is discussed. Some of the oscillator characteristics are given for wavelengths of 5 and 3 meters with 15- and 12-kw output, respectively. Mention is made of a marked physiological effect of ultra-short-wave fields.
Equivalent circuits have been found valuable in the solution of certain problems in that they simplify the analysis. Furthermore, equivalent circuits provide a means of replacing magnetic coupling with simple impedanc...
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An exact method, involving the line vector z, is developed for calculating the characteristic impedances of stepped impedance transformers having maximally-flat and Chebyshev characteristics. It is also shown that thi...
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An exact method, involving the line vector z, is developed for calculating the characteristic impedances of stepped impedance transformers having maximally-flat and Chebyshev characteristics. It is also shown that this leads to considerable economy of effort compared with earlier methods.
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