Autor: Oliveira, L. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Co-design of a low-power RF receiver and piezoelectric energy harvesting power supply for a Wireless Sensor Node
Autorzy:: Mancelos, N
Correia, J
Oliveira, J. P.
Oliveira, L. B.
Powiązania:: https://bibliotekanauki.pl/articles/398018.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Tematy:: CMOS RF analog front-end
low-voltage wideband balun LNA
passive mixer
piezoelectric energy harvesting
active full bridge rectifier
LDO regulator
układ analogowy CMOS
balun szerokopasmowy
mikser pasywny
energia piezoelektryczna
prostownik aktywny
prostownik mostkowy
regulator LDO
Opis:: A low-voltage RF CMOS receiver front-end and an energy harvesting power circuit for a piezoelectric source are presented as a co-designed solution for a Wireless Sensor Node. A MOSFET-only Wideband balun LNA with noise cancelling and a 0.6 V supply voltage is designed in conjunction with a passive mixer. The passive mixer operates in current mode, allowing a minimal introduction of voltage noise and a good linearity. The receiver front-end reaches a total voltage conversion gain of 31 dB, a 0.1-5.2 GHZ bandwidth, an IIP3 value of -1.35 dBm, and a noise ﬁgure inferior to 9 dB. The total power consumption is 1.95 mW. The energy harvesting power circuit consists of an active full bridge cross-coupled rectiﬁer followed by a low-dropout (LDO) regulator, and it is able to guarantee a power output of 6 mW with a regulated output voltage of 0.6 V, for typical vibration patterns.
Źródło:: International Journal of Microelectronics and Computer Science; 2014, 5, 4; 136-143
2080-8755
2353-9607
Pojawia się w:: International Journal of Microelectronics and Computer Science
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Cascode ampliﬁers with low-gain variability and gain enhancement using a body-biasing technique
Autorzy:: Pereira, N
Oliveira, L. B.
Goes, J.
Oliveira, J. P.
Powiązania:: https://bibliotekanauki.pl/articles/398063.pdf
Data publikacji:: 2013
Wydawca:: Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Tematy:: ampliﬁer
body-biasing
cascode
CMOS analog circuits
PVT compensation
wzmacniacz
kaskoda
układy analogowe CMOS
kompensacja PVT
Opis:: This paper presents a simple circuit technique to reduce gain variability with PVT variations in cascode ampliﬁers using a body-biasing scheme, while enhancing the overall gain of the ampliﬁer. Simulation results of a standard telescopic-cascode ampliﬁer, in two different nanoscale CMOS technologies (130 nm and 65 nm) show that the proposed compensated circuit ampliﬁer exhibits a (DC) gain variability smaller (below ± 0.5 dB) than the original (uncompensated) circuit, while reaching a gain enhancement of about 3 dB. The required auxiliary biasing circuit dissipates around 5% of the main ampliﬁer circuit.
Źródło:: International Journal of Microelectronics and Computer Science; 2013, 4, 3; 98-102
2080-8755
2353-9607
Pojawia się w:: International Journal of Microelectronics and Computer Science
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: A Simplified Design Methodology for MOSFET-Only Wideband Mixer
Autorzy:: Ortigueira, E.
Bastos, I.
Oliveira, L. B.
Oliveira, J. P.
Goes, J.
Powiązania:: https://bibliotekanauki.pl/articles/227194.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: CMOS mixers
MOSFET-only circuits
Gilbert cell
active mixers
wideband mixers
Opis:: In this paper we present a MOSFET-only implementation of a wideband Gilbert Cell. The circuit uses a commongate topology for a wideband input match, capable to cover the Wireless Medical Telemetry Service (WMTS) frequency bands of 600 MHz and 1.4 GHz. In this circuit the load resistors are replaced by transistors in triode region, to reduce area and cost, and minimize the effects of process and supply variations and mismatches. In addition, we obtain a higher gain for the same DC voltage drop, with a reduced impact on the noise figure (NF). The performance of this topology is compared with that of a conventional mixer with load resistors. Simulation results show that a peak gain of 20.6 dB (about 6 dB improvement) and a NF about of 11 dB for the 600 MHz band. The total power consumption is 3.6 mW from a 1.2 V supply.
Źródło:: International Journal of Electronics and Telecommunications; 2011, 57, 4; 503-509
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 4.

Tytuł:: Ultra-low-voltage LNA with high gain and low noise figure
Autorzy:: Bastos, I.
Oliveira, L. B.
Oliveira, J. P.
Goes, J.
Silva, M. M.
Powiązania:: https://bibliotekanauki.pl/articles/397785.pdf
Data publikacji:: 2013
Wydawca:: Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Tematy:: LNA
CMOS
noise cancellation
redukcja szumów
Opis:: We present a balun LNA with noise and distortion cancellation using double feedforward. A common-gate and a common-source stage are combined, and their resistive loads are replaced by transistors biased close to saturation to allows low supply voltage, without gain degradation. The proposed feedforward boosts the LNA gain and reduces the noise ﬁgure (NF). Simulation results with a 130 nm CMOS technology show that the gain is up to 24 dB and the NF is below 3.2 dB. The total power dissipation is 2.25 mW, leading to an FoM of 6.4 mW-1 with 0.6 V supply.
Źródło:: International Journal of Microelectronics and Computer Science; 2013, 4, 3; 124-128
2080-8755
2353-9607
Pojawia się w:: International Journal of Microelectronics and Computer Science
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "Oliveira, L." wg kryterium: Autor

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język