Results 231 to 240 of about 66,735 (286)
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Proceedings of the IEEE 2005 Custom Integrated Circuits Conference, 2005., 2006
This paper presents the design of UWB transceivers from both system-level and circuit-level perspectives. Following a detailed analysis of the impact of RF imperfections on the performance of the system, we review a number of transceiver and synthesizer architectures that can satisfy the MBOA UWB standard requirements.
Behzad Razavi +7 more
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This paper presents the design of UWB transceivers from both system-level and circuit-level perspectives. Following a detailed analysis of the impact of RF imperfections on the performance of the system, we review a number of transceiver and synthesizer architectures that can satisfy the MBOA UWB standard requirements.
Behzad Razavi +7 more
openaire +1 more source
2015 International Conference on Systems, Signals and Image Processing (IWSSIP), 2015
The accuracy of ranging of commercially available ultra-wide-band radio module was evaluated. Such modules are capable of very precise measurements of Time of Arrival of RF signal and consequently very precise range measurements or localizations. We measured and compared the distances with the reference distance using one of these commercial modules ...
Marko Malajner +2 more
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The accuracy of ranging of commercially available ultra-wide-band radio module was evaluated. Such modules are capable of very precise measurements of Time of Arrival of RF signal and consequently very precise range measurements or localizations. We measured and compared the distances with the reference distance using one of these commercial modules ...
Marko Malajner +2 more
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IEEE Transactions on Circuits and Systems II: Express Briefs, 2011
A fully differential analog multiplier for wideband operations is presented. The circuit consists of a p-MOSFET common-gate differential pair input stage for wideband impedance matching, a p-MOSFET Gilbert quad as a multiplier stage, and active loads. The circuit has been designed and fabricated in 90-nm CMOS. The test-chip area is 560 × 700 μm2.
Martina Mincica +2 more
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A fully differential analog multiplier for wideband operations is presented. The circuit consists of a p-MOSFET common-gate differential pair input stage for wideband impedance matching, a p-MOSFET Gilbert quad as a multiplier stage, and active loads. The circuit has been designed and fabricated in 90-nm CMOS. The test-chip area is 560 × 700 μm2.
Martina Mincica +2 more
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2008 Wireless Telecomunications Symposium, 2008
This paper presents a new transmitted reference ultra- wideband receiver, which utilizes the orthogonal property of even and odd order derivatives of Gaussian pulses in neighboring chips for synchronization. This system, referred to as orthogonal TR-UWB (OTR-UWB), employs only a single spreading code, which results in much lower mean detection time ...
Hossein Gharaee +2 more
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This paper presents a new transmitted reference ultra- wideband receiver, which utilizes the orthogonal property of even and odd order derivatives of Gaussian pulses in neighboring chips for synchronization. This system, referred to as orthogonal TR-UWB (OTR-UWB), employs only a single spreading code, which results in much lower mean detection time ...
Hossein Gharaee +2 more
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On-body UWB MIMO antenna for UWB application
2013 Asia-Pacific Microwave Conference Proceedings (APMC), 2013In this paper, a UWB MIMO antenna for an on-body application is proposed and antenna performance with body effect and the impact on the human body are investigated. The proposed MIMO antenna is composed of an UWB antenna above ground plane and an additional isolator located between the two antennas to enhance the isolation characteristic.
Eunman Joo +3 more
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IEEE Journal of Solid-State Circuits, 2005
A direct-conversion ultra-wideband (UWB) transceiver for Mode 1 OFDM applications employs three resonant networks and three phase-locked loops. Using a common-gate input stage, the receiver allows direct sharing of the antenna with the transmitter. Designed in 0.13-/spl mu/m CMOS technology, the transceiver provides a total gain of 69-73 dB and a noise
Behzad Razavi +8 more
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A direct-conversion ultra-wideband (UWB) transceiver for Mode 1 OFDM applications employs three resonant networks and three phase-locked loops. Using a common-gate input stage, the receiver allows direct sharing of the antenna with the transmitter. Designed in 0.13-/spl mu/m CMOS technology, the transceiver provides a total gain of 69-73 dB and a noise
Behzad Razavi +8 more
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Timing recovery for UWB signals
IEEE Global Telecommunications Conference, 2004. GLOBECOM '04., 2005The paper is concerned with timing recovery for ultra-wideband communications operating in a dense multipath environment. A timing algorithm is proposed that exploits the samples of the received signal to estimate the start of the individual frames with respect to a local reference (frame timing) and the location of the first frame in each symbol ...
CARBONELLI C., MENGALI, UMBERTO
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Development of CMOS UWB transceivers in NICT UWB consortium
2005 Asia-Pacific Microwave Conference Proceedings, 2005This article reports our activities in a UWB research and development consortium organized by the National Institute of Information and Communications Technology, Japan. We fabricated UWB RF front-end MMICs using 180nm CMOS technology for both of the multiband system and the impulse radio system.
A. Kasamatsu, K. Li, T. Matsui
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A differential receiver for uwb systems
IEEE Transactions on Wireless Communications, 2006We consider a UWB communication system operating in a typical indoor environment and we propose a novel differential receiver in which encoding is performed symbol-by-symbol rather than frame-by-frame, as is normally done. The detector structure is derived in a single-user scenario using a generalized likelihood ratio test approach.
D'AMICO, ANTONIO ALBERTO +1 more
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UWB Chebeyshev band pass filter for UWB communication
2013 International Conference of Information and Communication Technology (ICoICT), 2013In this paper, presented an analysis and designed structure for Ultra-Wide Band (UWB) band pass filter that was carried out using a composite microstrip line with -10 dB and fractional bandwidth of more than 92%. This designed of band pass filter is suitable for ultra-wide band application system.
M.A. Othman +7 more
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