Resumo

GONZALEZ RIOS, Jorge Luís; LUIZ MORENO, Robson  e  VAZQUEZ, Diego. Constraints imposed by passive elements in the design of CMOS low-noise amplifiers. EAC [online]. 2015, vol.36, n.3, pp. 1-12. ISSN 1815-5928.

This paper analyses the impact of technological limits of passive elements on integrated CMOS Low-Noise Amplifiers (LNAs) design. The topology under study is the commonly used inductively degenerated common-source LNA. An equation-based analysis is presented, which is verified and complemented by means of simulation. Simulations were carried out using a 130-nm 1.2-V CMOS technology, working at 2.4 GHz. We obtained that inductance and capacitance values available in the technological process constraint the achievable maximum gain, minimum power consumption and transistor sizing. Results also show that designers must include as much information as possible about passive elements into the design procedure of radiofrequency integrated circuits.

Palavras-chave : low-noise amplifier (LNA); CMOS; integrated circuit; low power; passive elements; radio frequency.

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