Balun LNA with continuously controllable gain and with noise and distortion cancellation

Luís Augusto Bica Gomes de Oliveira; João Pedro Abreu de Oliveira; João Carlos da Palma Goes; DEE Group Author

doi:10.1109/ISCAS.2012.6271711

Balun LNA with continuously controllable gain and with noise and distortion cancellation

Luís Augusto Bica Gomes de Oliveira, João Pedro Abreu de Oliveira, João Carlos da Palma Goes, DEE Group Author

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

8 Citations (Scopus)

Abstract

In this paper we present a balun LNA with gain adjustable continuously by a voltage. The LNA is based on the combination of a common-gate and a common-source stage to cancel the noise and distortion of the common-gate stage. To obtain higher gain with the same DC voltage drop we replace resistors by PMOS transistors. This also allows continuous gain control and we show that by proper design, the effect on IIP3 and IIP2 can be neglected. With this approach, we avoid the use of switches, and the input impedance and the noise figure are not affected. Simulation results with a 130 nm CMOS technology show that the balun LNA has gain continuously tunable between 12 and 20 dB. The NF is below than 3.2 dB and the best IIP3 is higher than 0 dBm and the maximum IIP2 is 14 dBm. The total power dissipation is only 4.8 mW for a bandwidth of 5 GHz.

Original language	Unknown
Title of host publication	IEEE International Symposium on Circuits and Systems (ISCAS 2012)
Pages	2143-2146
DOIs	https://doi.org/10.1109/ISCAS.2012.6271711
Publication status	Published - 1 Jan 2012
Event	ISCAS 2012 - IEEE International Symposium on Circuits and Systems - Duration: 1 Jan 2012 → …

Conference

Conference	ISCAS 2012 - IEEE International Symposium on Circuits and Systems
Period	1/01/12 → …

Access to Document

10.1109/ISCAS.2012.6271711

Cite this

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title = "Balun LNA with continuously controllable gain and with noise and distortion cancellation",

abstract = "In this paper we present a balun LNA with gain adjustable continuously by a voltage. The LNA is based on the combination of a common-gate and a common-source stage to cancel the noise and distortion of the common-gate stage. To obtain higher gain with the same DC voltage drop we replace resistors by PMOS transistors. This also allows continuous gain control and we show that by proper design, the effect on IIP3 and IIP2 can be neglected. With this approach, we avoid the use of switches, and the input impedance and the noise figure are not affected. Simulation results with a 130 nm CMOS technology show that the balun LNA has gain continuously tunable between 12 and 20 dB. The NF is below than 3.2 dB and the best IIP3 is higher than 0 dBm and the maximum IIP2 is 14 dBm. The total power dissipation is only 4.8 mW for a bandwidth of 5 GHz.",

author = "Oliveira, {Lu{\'i}s Augusto Bica Gomes de} and Oliveira, {Jo{\~a}o Pedro Abreu de} and Goes, {Jo{\~a}o Carlos da Palma} and {DEE Group Author}",

year = "2012",

month = jan,

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doi = "10.1109/ISCAS.2012.6271711",

language = "Unknown",

isbn = "978-1-4673-0218-0",

pages = "2143--2146",

booktitle = "IEEE International Symposium on Circuits and Systems (ISCAS 2012)",

note = "ISCAS 2012 - IEEE International Symposium on Circuits and Systems ; Conference date: 01-01-2012",

}

Balun LNA with continuously controllable gain and with noise and distortion cancellation. / Oliveira, Luís Augusto Bica Gomes de ; Oliveira, João Pedro Abreu de ; Goes, João Carlos da Palma et al.
IEEE International Symposium on Circuits and Systems (ISCAS 2012). 2012. p. 2143-2146.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

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AU - Oliveira, Luís Augusto Bica Gomes de

AU - Oliveira, João Pedro Abreu de

AU - Goes, João Carlos da Palma

AU - DEE Group Author

PY - 2012/1/1

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AB - In this paper we present a balun LNA with gain adjustable continuously by a voltage. The LNA is based on the combination of a common-gate and a common-source stage to cancel the noise and distortion of the common-gate stage. To obtain higher gain with the same DC voltage drop we replace resistors by PMOS transistors. This also allows continuous gain control and we show that by proper design, the effect on IIP3 and IIP2 can be neglected. With this approach, we avoid the use of switches, and the input impedance and the noise figure are not affected. Simulation results with a 130 nm CMOS technology show that the balun LNA has gain continuously tunable between 12 and 20 dB. The NF is below than 3.2 dB and the best IIP3 is higher than 0 dBm and the maximum IIP2 is 14 dBm. The total power dissipation is only 4.8 mW for a bandwidth of 5 GHz.

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