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Bagher Afshar
Researcher at University of California, Berkeley
Publications - 20
Citations - 1188
Bagher Afshar is an academic researcher from University of California, Berkeley. The author has contributed to research in topics: Amplifier & CMOS. The author has an hindex of 14, co-authored 20 publications receiving 1077 citations. Previous affiliations of Bagher Afshar include University of California & Broadcom.
Papers
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Journal ArticleDOI
A 90 nm CMOS Low-Power 60 GHz Transceiver With Integrated Baseband Circuitry
Cristian Marcu,Debopriyo Chowdhury,Chintan Thakkar,Jung-Dong Park,Lingkai Kong,Maryam Tabesh,Yanjie Wang,Bagher Afshar,Abhinav Gupta,Amin Arbabian,Simone Gambini,R. Zamani,Elad Alon,Ali M. Niknejad +13 more
TL;DR: A low power 60 GHz transceiver that includes RF, LO, PLL and BB signal paths integrated into a single chip that includes specially designed ESD protection on all mm-wave pads is presented.
Journal ArticleDOI
20.2 A 16TX/16RX 60GHz 802.11ad chipset with single coaxial interface and polarization diversity
Michael Boers,Iason Vassiliou,Saikat Sarkar,Sean Nicolson,Ehsan Adabi,Bagher Afshar,Bevin Perumana,Theodoros Chalvatzis,S. Kavadias,P. Sen,Wei Liat Chan,Alvin Yu,Ali Parsa,Med Nariman,Seunghwan Yoon,Alfred Grau Besoli,Chryssoula A. Kyriazidou,Gerasimos Zochios,Namik Kocaman,Adesh Garg,Hans Eberhart,Phil Yang,Hongyu Xie,Hea Joung Kim,Alireza Tarighat,David Garrett,Andrew J. Blanksby,Mong Kuan Wong,Durai Pandian Thirupathi,Siukai Mak,Radha Srinivasan,Amir Ibrahim,Ersin Sengul,Vincent Roussel,Po-Chao Huang,Tsuifang Yeh,Murat Mese,Jesus Alfonso Castaneda,Brima Ibrahim,Tirdad Sowlati,Maryam Rofougaran,Ahmadreza Rofougaran +41 more
TL;DR: This paper presents a 802.11ad radio chipset capable of SC and OFDM modulation using a 16TX-16RX beamforming RF front-end, complete with an antenna array that supports polarization diversity.
Journal ArticleDOI
A 60-GHz 144-Element Phased-Array Transceiver for Backhaul Application
Tirdad Sowlati,Saikat Sarkar,Bevin Perumana,Wei Liat Chan,Anna Papio Toda,Bagher Afshar,Michael Boers,Donghyup Shin,Tim R. Mercer,Wei-Hong Chen,Alfred Grau Besoli,Seunghwan Yoon,Sissy Kyriazidou,Phil Yang,Vipin Kumar Aggarwal,Nooshin Vakilian,Dmitriy Rozenblit,Masoud Kahrizi,Joy Zhang,Alan Wang,P. Sen,David Murphy,Ali Sajjadi,Alireza Tarighat Mehrabani,Evangelos Kornaros,Khim Leng Low,Koji Kimura,Vincent Roussel,Hongyu Xie,Kodavati Venkat +29 more
TL;DR: A 144-element phased array transceiver is realized using a modular tiled approach that supports 802.11ad, MCS12 single carrier 16-quadratic-amplitude modulation (QAM) 4.6 Gbps, in the 60-GHz band and has a measured over the air (OTA) max effective isotropic radiated power (EIRP) of 51 dBm at saturated power (PSAT).
Proceedings ArticleDOI
A Robust 24mW 60GHz Receiver in 90nm Standard CMOS
TL;DR: A highly integrated receiver front-end is demonstrated that is manufactured in a digital CMOS process using a design approach amenable to mass production and well predicted by the simulation results, matching the desired frequency band and the simulated gain to a very high accuracy.
Proceedings ArticleDOI
A 2.5mW inductorless wideband VGA with dual feedback DC-offset correction in 90nm CMOS technology
TL;DR: In this paper, a low power inductorless wideband variable gain control amplifier (VGA) for baseband receivers has been designed in a standard digital 90 nm CMOS technology.