Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Olli Viitala"'
Publikováno v:
IEEE Journal on Emerging and Selected Topics in Circuits and Systems. 5:514-524
RF-to-digital conversion is a recent approach to digital-intensive wireless receiver operation. Such converters often employ delta-sigma $(\Delta\Sigma)$ modulation to transcend the traditional divide between receiver RF front-ends and baseband analo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54f6cc241f934bc592711e3486b81130
https://doi.org/10.1109/jetcas.2015.2502165
https://doi.org/10.1109/jetcas.2015.2502165
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 63:1370-1379
Emerging digital-intensive receiver architectures require new methods for input matching design. In particular, closed-loop $\Delta \Sigma$ -based receivers inject discrete-time global feedback to the RF low-noise amplifier (LNA) output. When using f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a729335f4d511b4847ce596300c930f
https://doi.org/10.1109/tmtt.2015.2401585
https://doi.org/10.1109/tmtt.2015.2401585
Autor:
Mikko Kaltiokallio, Kim B. Ostman, Olli Viitala, Kari Stadius, Jussi Ryynanen, Kimmo Koli, Mikko Englund
Publikováno v:
IEEE Journal of Solid-State Circuits. 50:644-655
This paper presents a wideband direct ΔΣ receiver for the 0.7-2.7 GHz frequency range. The architecture embeds a wideband direct-conversion RF front-end into a continuous-time feedback ΔΣ modulator, which initiates the analog-to-digital conversio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dca40cf81d75da0b84df95dcd9191db1
https://doi.org/10.1109/jssc.2015.2397193
https://doi.org/10.1109/jssc.2015.2397193
Publikováno v:
Analog Integrated Circuits and Signal Processing. 83:23-33
This paper presents a fully integrated 40-GHz transceiver designed for 2 Gbit/s short-range chip-to-chip communication link. The proposed architecture includes both the transmitter and the receiver and is optimized for on---off-keying modulation sche
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9450620000f9e921b1a393597a55549
https://doi.org/10.1007/s10470-015-0501-7
https://doi.org/10.1007/s10470-015-0501-7
Autor:
Jussi Ryynanen, Mikko Kaltiokallio, Mikko Englund, Kimmo Koli, Olli Viitala, Kari Stadius, Kim B. Ostman
Publikováno v:
IEEE Transactions on Circuits and Systems I: Regular Papers. 62:234-243
N-path techniques have become a popular candidate alternative to external pre-selection filtering in wireless receivers. Their main attraction lies in enabling tunable on-chip high- $Q$ filters, with straightforward migration from one CMOS node to an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6a1f6dc2d79100af153b837ef27b26f
https://doi.org/10.1109/tcsi.2014.2358331
https://doi.org/10.1109/tcsi.2014.2358331
Autor:
Tero Nieminen, Tero Tikka, Kari Stadius, Jussi Ryynanen, Yury Antonov, Martti Voutilainen, Olli Viitala
Publikováno v:
Analog Integrated Circuits and Signal Processing. 82:159-169
A scalable low-voltage signaling (SLVS) serial link transmitter for MIPI M-PHY is presented in this paper. It delivers 200---400 mV pp signals at date rates of 1.25---5.8 Gbps. The integrated circuit entity consists of the actual SLVS driver, an ADPL
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::699cc41b6c58125d4c1d63651ee53bd3
https://doi.org/10.1007/s10470-014-0433-7
https://doi.org/10.1007/s10470-014-0433-7
Autor:
Kimmo Koli, Mikko Englund, Kari Stadius, Mikko Kaltiokallio, Kim B. Ostman, Jussi Ryynanen, Olli Viitala
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 62:2071-2083
This paper presents the analysis, design, and measurements of a 2.5-GHz receiver front-end in a 40-nm CMOS technology. The front-end utilizes RLC-resonator quality factor (Q) boosting and four-phase N-path filtering to improve the blocker filtering c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f7549e0ae7fa90f1581c281f37d722d
https://doi.org/10.1109/tmtt.2014.2333714
https://doi.org/10.1109/tmtt.2014.2333714
Publikováno v:
IEEE Transactions on Circuits and Systems II: Express Briefs. 61:70-74
This brief analyzes the dual role and operation of the low noise amplifier (LNA) in the recently introduced direct delta-sigma receiver (DDSR). First, the LNA functions as a transconductor in an integrator stage, and in this role, we explore the effe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c54c53f426be6534a3ba3fe96eb03a7c
https://doi.org/10.1109/tcsii.2013.2291092
https://doi.org/10.1109/tcsii.2013.2291092
Publikováno v:
2015 IEEE Radio Frequency Integrated Circuits Symposium (RFIC).
This paper presents a low power wideband blocker detector consisting of an under-sampling SAR ADC connected to the RF input node of a wideband mixer-first receiver. The original carrier frequency of the blocker is determined from folded spectra by us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9fa7c7cb322c31437976d4885c340016
https://doi.org/10.1109/rfic.2015.7337773
https://doi.org/10.1109/rfic.2015.7337773