On the theoretical limits of noise-gain-mismatch tradeoff in the design of multi-stage cascaded transistor amplifiers

Calandra, E.F.; Maio, B. Di; Lupo, Daniele

doi:10.1109/mwscas.2007.4488686

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“…For the second problem the authors of [9] considered the conditions for optimisation of amplifier noise, gain and mismatch from a very high level. The same authors then propose a technique based on 'optimal design curves' which relate the gain, noise and mismatch in a condensed form indicating the potential trade-offs involved [10].…”

Section: Introductionmentioning

confidence: 99%

Design of microwave transistor amplifiers with optimum cascaded gain and noise

Corral

2016

IET Microwaves, Antennas & Propagation

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The design of microwave transistor amplifiers with optimum cascade noise and gain is described. By treating two stages at a time, the condition for the second stage's noise figure needed to satisfy the total cascaded gain and noise performance is derived. Two optimal solutions are possible: Minimum cascade noise figure or maximum available cascade power gain without increasing the cascade noise over that of the minimum noise design. A design example is submitted showing the effectiveness of the proposed method in optimising the gain and noise of cascaded amplifier stages. The approach can be extended to noise temperature and multiple cascaded stages including passive blocks without any loss of generality.

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Section: Introductionmentioning

confidence: 99%