Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Ahmadreza Rofougaran"'
Publikováno v:
IEEE Transactions on Circuits and Systems II: Express Briefs. 64:605-609
The output power level and the power conversion efficiency (PCE) rate of the energy-harvesting systems are vital factors in realizing effective millimeter-wave wireless power transfer solutions that can power battery-less and charge coil-free smart e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6be36d7ccce4478489cf9d51a5a99c57
https://doi.org/10.1109/tcsii.2016.2591543
https://doi.org/10.1109/tcsii.2016.2591543
Autor:
Franco De Flaviis, Sudhakar Pamarti, Farid Shirinfar, Med Nariman, Ahmadreza Rofougaran, Anna Papio Toda
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 64:2664-2677
The first reported full-system 60-GHz wireless power transfer (WPT) solution that can power batteryless and charge coil-free compact WPT devices is presented. The system is fabricated in a 40-nm digital CMOS process and an inexpensive packaging mater
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5eeb8341c6fd747d964cad42ebe7b3bf
https://doi.org/10.1109/tmtt.2016.2582168
https://doi.org/10.1109/tmtt.2016.2582168
Autor:
K. Juan, Rahul Magoon, Amir Hadji-Abdolhamid, F. Etemadi, Yuyu Chang, Paul Mudge, Maryam Rofougaran, Zhimin Zhou, Behzad Nourani, C. Guan, J. Chiu, Med Nariman, Mohyee Mikhemar, Ning Liu, Behzad Saeidi, Peihua Ye, Behnam Mohammadi, Bernd Pregardier, Morteza Vadipour, Masoud Kahrizi, Alireza Tarighat, John Leete, Ahmadreza Rofougaran, Nooshin Vakilian, Gerasimos Theodoratos
Publikováno v:
IEEE Journal of Solid-State Circuits. 51:1066-1079
This work presents a receiver capable of receiving three simultaneous cellular channels with an aggregate bandwidth of 60 MHz, enabling a 300 Mb/s downlink rate. The receiver has 16 RF LNA ports covering the cellular bands within the 572–2700 MHz f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19627cb3106beea7e8d7344c89e52d73
https://doi.org/10.1109/jssc.2016.2514438
https://doi.org/10.1109/jssc.2016.2514438
Autor:
Masoud Kahrizi, Bernd Pregardier, Rahul Magoon, Sining Zhou, Mohyee Mikhemar, Amir Hadji-Abdolhamid, Alireza Tarighat Mehrabani, Maryam Rofougaran, Dmitriy Rozenblit, Ahmad Mirzaei, Yuyu Chang, Behzad Saeidi, Ahmadreza Rofougaran, Behnam Mohammadi, John Leete, Med Nariman
Publikováno v:
IEEE Journal of Solid-State Circuits. 51:1080-1095
Carrier aggregation is a key feature of the 3GPP LTE-Advanced cellular network standard that combines multiple channels to support higher data rates and improve the utilization of fragmented spectrum holdings. This work presents a cellular transmitte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d000c452c75b1bc5135572a2a552a8f
https://doi.org/10.1109/jssc.2015.2511167
https://doi.org/10.1109/jssc.2015.2511167
Autor:
Alvin Yu, Wei Liat Chan, Iason Vassiliou, Ersin Sengul, Hea Joung Kim, Siukai Mak, Alireza Tarighat, Mong Kuan Wong, Bevin Perumana, Adesh Garg, Theodoros Chalvatzis, Brima Ibrahim, Murat Mese, Hongyu Xie, Phil Yang, Tirdad Sowlati, Tsuifang Yeh, David Garrett, Ali Parsa, Amir Ibrahim, Ehsan Adabi, Namik Kocaman, Sean Nicolson, Andrew J. Blanksby, Vincent Roussel, Jesus Alfonso Castaneda, Seunghwan Yoon, Med Nariman, Alfred Grau Besoli, Po-Chao Huang, Durai Pandian Thirupathi, Bagher Afshar, Gerasimos Zochios, S. Kavadias, Chryssoula A. Kyriazidou, P. Sen, Hans Eberhart, Saikat Sarkar, Ahmadreza Rofougaran, Maryam Rofougaran, Michael Boers, Radha Srinivasan
Publikováno v:
ISSCC
The IEEE 802.11ad standard supports PHY rates up to 6.7Gb/s on four 2GHz-wide channels from 57 to 64GHz. A 60GHz system offers higher throughput than existing 802.11ac solutions but has several challenges for high-volume production including: integra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e33a3a66f0e493edf607935f436274ea
https://doi.org/10.1109/jssc.2014.2356462
https://doi.org/10.1109/jssc.2014.2356462
Autor:
P. Lettieri, Yuyu Chang, Paul Chang, V. Rakhshani, Med Nariman, Ethan Chang, Ahmadreza Rofougaran, H. Vinh, A. Mirzaei, K. Juan, P. Kilcoyne, Calvin Chen, P. Suri, Zhimin Zhou, H. Tran, J. Chiu, Morteza Vadipour, M. Rofougaran, Amir Hadji-Abdolhamid, M. Koscal, Henrik T. Jensen, A. Yazdi, Behnam Mohammadi, B. Zhao, Alireza Zolfaghari, John Leete, Qiang Li, Joonsuk Kim, Ajat Hukkoo, L. Serrano, J. Shin, C. Guan, C. Wilcoxson, E. Raith, Hooman Darabi, J. Leung, Claude Hayek, Shr-Lung Chen
Publikováno v:
IEEE Journal of Solid-State Circuits. 46:870-882
A quad-band 2.5G SoC integrating all the RF, DSP, ARM, audio and other baseband processing functions into a single 65 nm CMOS die is described. The paper focuses on the radio portion mostly, and addresses the challenges of realizing a complete GSM/ED
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5054d427274372cd3acdf28b67885b57
https://doi.org/10.1109/jssc.2011.2109432
https://doi.org/10.1109/jssc.2011.2109432
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 57:1320-1329
This paper presents a novel active blocker rejecting RF (ABR-RF) front end for RF identification (RFID) applications. The proposed ABR-RF injects the blocker replica within the low-noise amplifier of the RFID receiver chain, through a feed-forward pa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c9692a18f39b603d7354dbf2c9c2a8d
https://doi.org/10.1109/tmtt.2009.2017300
https://doi.org/10.1109/tmtt.2009.2017300
Autor:
M. Rofougaran, Jesus Alfonso Castaneda, Aminghasem Safarian, F. De Flaviis, Ahmadreza Rofougaran, Amin Shameli
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 56:1267-1277
This paper presents an RF identification (RFID) system with a fully integrated transponder. To enable the on-chip integration of the tag's antenna, it is suggested to employ near-field coupling at high-frequency ranges, i.e., the UHF band. The RFID s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2cfa95fd743acc10644b92563a4e461e
https://doi.org/10.1109/tmtt.2008.920182
https://doi.org/10.1109/tmtt.2008.920182
Autor:
Ali Afsahi, M. Rofougaran, K.W.-K. Yeung, W. Morton, Seema B. Anand, Stephen Wu, Marcellus Forbes, Tom W. Kwan, Jerry Lin, R. Zhu, Jay Pattin, Jacob Rael, Stephen Au, Ahmadreza Rofougaran, John Leete, Adedayo Ojo, K. Chien, Keith Carter, Sumant Ranganathan, Ning Li, Meng-An Pan, C.P. Lee, P. van Rooyen, Arya Behzad, Hung-Ming Chien, Long Tran, Jason A. Trachewsky, Luis Gutierrez, Mark Gonikberg, M. Nariman, M. Seth, Alireza Zolfaghari, Eric B. San Jose Blecker, Razieh Roufoogaran, Mark Chambers
Publikováno v:
IEEE Journal of Solid-State Circuits. 43:1101-1118
A low-power 802.11abg SoC which achieves the best reported sensitivity as well as lowest reported power consumption and utilizes an extensive array of auto calibrations is reported. This SoC utilizes a two-antenna array receiver to build a single wei
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7d2e5fc401a0bf1b5a803fa88ee7d92
https://doi.org/10.1109/jssc.2008.920338
https://doi.org/10.1109/jssc.2008.920338
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 56:31-38
A two-point modulation technique is presented that improves the performance of nonlinear power amplifiers (PAs) in polar transmitters. In this scheme, the output amplitude modulation is performed by controlling the current of the PA. The current cont
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71f6cfbb79904a1948266a45ec62799b
https://doi.org/10.1109/tmtt.2007.912012
https://doi.org/10.1109/tmtt.2007.912012