Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Vladimir Aparin"'
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 67:2946-2963
This paper reports a transmit–receive (Tx–Rx) front-end (FE) in bulk CMOS targeting fifth-generation (5G) mobile user equipment (UE)-phased arrays. Block-level specifications are first reviewed based on link budget and UE array beam steering cons
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 66:4563-4575
Two passive phase shifters (PSs) are proposed to minimize insertion loss (IL) in bulk CMOS technology for 28-GHz fifth generation integrated phased-array transceivers. The first PS is based on a true delay phase shift structure, where a modification
Publikováno v:
IEEE Journal of Solid-State Circuits. 51:3020-3036
This paper presents the first linear bulk CMOS power amplifier (PA) targeting low-power fifth-generation (5G) mobile user equipment integrated phased array transceivers. The output stage of the PA is first optimized for power-added efficiency (PAE) a
Publikováno v:
IEEE Journal of Solid-State Circuits. 51:1200-1209
This paper presents an all-digital class-G quadrature switched-capacitor power amplifier (Q-SCPA) implemented in 65 nm CMOS. It combines in-phase ( I ) and quadrature ( Q ) signals on a shared capacitor array. The I / Q signals are digitally weighted
Autor:
Aliakbar Homayoun, Joung Won Park, Gang Liu, Hyun-Chul Park, Bon-Hyun Ku, Vladimir Aparin, Yu-Chin Ou, Paul Mouat, Andrew Arnett, Jongrit Lerdworatawee, Jeremy D. Dunworth, T. Segoria, Keith Douglas, Kaushik Chakraborty, David Lu, Hajir Hedayati, Ali Tassoudji
Publikováno v:
2018 IEEE/MTT-S International Microwave Symposium - IMS.
A 28GHz phased array transceiver with RF/IF conversion in 28nm bulk CMOS supports up to 12 antenna elements each on 2 MIMO layers. The transceiver is targeted for small antenna arrays in mobile user equipment, implements an AMPM compensated PA, passi
Publikováno v:
IEEE Journal of Solid-State Circuits. 50:1148-1164
This paper presents a high-performance two-path wideband receiver (RX) for 4G LTE applications. The RX uses an extra GM stage after the LNA to improve the noise figure (NF). Furthermore, different RF and baseband blocker rejection techniques are prop
Publikováno v:
2017 IEEE Radio Frequency Integrated Circuits Symposium (RFIC).
This paper presents a peaking PA bias circuit for an Average Power Tracking (APT) CMOS Doherty PA, where the common supply voltage changes as the target average power changes. In order to have Doherty efficiency characteristics with APT, the peaking
Publikováno v:
NEWCAS
This paper presents a transformer combined, quadrature switched-capacitor power amplifier (Q-SCPA) that amplifies in-phase (I) and quadrature (Q) signals separately and combines them in a power-combining transformer. The unit SCPA utilizes a class-G
Publikováno v:
IEEE Transactions on Circuits and Systems I: Regular Papers. 58:668-676
This paper describes and analyzes asymmetry issues for weakly nonlinear MOSFET Common-Gate (CG) and Common-Source (CS) architectures. Using a Volterra series analysis, the cause of asymmetry in CG and CS amplifiers is explained. The asymmetry between
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 58:820-830
A CMOS mixer whose linearity is maintained for a wide frequency range is presented. Transconductance (Gm) boosting methods, such as input cross-coupling, current reuse complementary input, and back gate connection, are used to improve overall gain an