Results 241 to 250 of about 229,690 (293)
Some of the next articles are maybe not open access.
Low-Noise Parametric Amplifier
Proceedings of the IRE, 1960The theory of the parametric amplifier has been reformulated to permit the prediction of noise temperature and pump power in terms of the physical parameters of the nonlinear element and circuit. The results of this analysis are supported by careful experiments at S-band using a gold-bonded germanium semiconductor diode.
R. Knechtli, R. Weglein
openaire +1 more source
Solid-State Electronics, 1962
Abstract The usefulness of a low-noise amplifier depends upon the noise environment in which it is used, and upon the way in which it is used. Noise received by the aerial originates in extraterrestrial sources, in the atmosphere, and from the ground.
openaire +1 more source
Abstract The usefulness of a low-noise amplifier depends upon the noise environment in which it is used, and upon the way in which it is used. Noise received by the aerial originates in extraterrestrial sources, in the atmosphere, and from the ground.
openaire +1 more source
2011
Ostensibly, one key component of any receiver chain is the low-noise amplifier (LNA) coming off the antennas. Since the signal at that point is comparatively weak, good gain and noise performance are necessary.
openaire +1 more source
Ostensibly, one key component of any receiver chain is the low-noise amplifier (LNA) coming off the antennas. Since the signal at that point is comparatively weak, good gain and noise performance are necessary.
openaire +1 more source
2017
In this chapter the theory and mathematics of general LNAs are explored. This is the first chapter in which practical LNA configurations are explored in detail, whereas previous chapters served as a build-up towards this chapter, describing the background of millimeter-wave research, amplifier design, semiconductor technologies and active and passive ...
Mladen Božanić, Saurabh Sinha
openaire +1 more source
In this chapter the theory and mathematics of general LNAs are explored. This is the first chapter in which practical LNA configurations are explored in detail, whereas previous chapters served as a build-up towards this chapter, describing the background of millimeter-wave research, amplifier design, semiconductor technologies and active and passive ...
Mladen Božanić, Saurabh Sinha
openaire +1 more source
Proceedings of the IRE, 1948
This paper describes an amplifier circuit which yields very low noise factor, consisting of a grounded-cathode triode followed by a grounded-grid triode. The combination is entirely noncritical and provides the low noise factor of a triode with the high amplification and stability of a pentode.
H. Wallman, A.B. Macnee, C.P. Gadsden
openaire +1 more source
This paper describes an amplifier circuit which yields very low noise factor, consisting of a grounded-cathode triode followed by a grounded-grid triode. The combination is entirely noncritical and provides the low noise factor of a triode with the high amplification and stability of a pentode.
H. Wallman, A.B. Macnee, C.P. Gadsden
openaire +1 more source
Broadband Low-Noise Amplifiers
2017Although some configurations were already mentioned in Chap. 5 (mostly, feedback configurations), the techniques to turn narrowband LNAs into broadband LNAs are the topic of this chapter. The chapter opens with a discussion of some popular RF broadband topologies, their general circuit diagrams and their advantages and disadvantages.
Mladen Božanić, Saurabh Sinha
openaire +1 more source
IRE Transactions on Electron Devices, 1959
The principles of low-noise guns have been applied to klystron amplifiers with good corroboration of the theory. In the past, many people thought that klystrons had inherently high noise figures, while others advanced the theory that low-noise guns might be used with klystrons as well as with wave tubes.
openaire +1 more source
The principles of low-noise guns have been applied to klystron amplifiers with good corroboration of the theory. In the past, many people thought that klystrons had inherently high noise figures, while others advanced the theory that low-noise guns might be used with klystrons as well as with wave tubes.
openaire +1 more source
Low-noise amplifier for myoelectric measurements
Medical & Biological Engineering, 1973At least two conclusions may be drawn from our experiences: (a) whereas manual analysis necessarily oversimplifies the picture of a circuit's operation, it is still a useful guide. (b) f.e.t.s. are a practical answer to the high-value, unbalanced source impedances and low signal levels found in biological phenomena.
openaire +2 more sources