How to reduce the instability in tuned amplifier?
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| Papers (10) | Insight |
|---|---|
| Bifurcation loci provide instability contours versus practical design parameters and can be used to evaluate the impact of the instability on the overall amplifier performance and to stabilize the amplifier. | |
81 Citations | Using numerical simulations of thermally induced mode coupling we show how the instability threshold can be substantially reduced if the pump or injected signal is modulated in the kHz range. |
10 Citations | A drive wave with sufficiently high intensity can further reduce the growth rate of the absolute instability and prolong the stable amplification period. |
19 Citations | In a uniform magnetic field, the instability exhibits an exceedingly narrow bandwidth, 2.5 MHz, which would be a great disadvantage in any practical application as an amplifier. |
4 Citations | Gain saturation is strong in any efficient amplifier and we show how it can be exploited to raise instability thresholds be a factor of two or more while staying below the stimulated Brillouin threshold. |
| A detailed study of these nonlinear shifts reveals several ways to reduce these new sources of frequency instability. | |
| Finally, besides the LNAs, the presented stabilization technique can also be utilized in other tuned amplifiers, filters or oscillators employing damped LC-tuned loads. | |
36 Citations | The identification of the mechanisms behind the different instability phenomena will lead to an efficient derivation of accurate techniques for their elimination from the amplifier response. |
16 May 1995 13 Citations | A novel nonlinear analysis of high power amplifier instability has been developed. |
17 Jun 2012 3 Citations | Because of the existence of an input source at the same frequency of the instability, the degenerate parametric power amplifier will exhibit a specific bifurcation behavior, inherent to this type of circuit. |
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