Searched for: department%3A%22Microelectronics%255C%252B%2526%255C%252BComputer%255C%252BEngineering%22
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Wu, W. (author), Staszewski, R.B. (author), Long, J.R. (author)
A mm-wave digital transmitter based on a 60 GHz all-digital phase-locked loop (ADPLL) with wideband frequency modulation (FM) for FMCW radar applications is proposed. The fractional-N ADPLL employs a high-resolution 60 GHz digitally controlled oscillator (DCO) and is capable of multi-rate two-point FM. It achieves a measured rms jitter of 590.2...
journal article 2014
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Alavi, S.M. (author), Staszewski, R.B. (author), De Vreede, L.C.N. (author), Long, J.R. (author)
This paper presents a wideband 2 13-bit in-phase/quadrature-phase (I/Q) RF digital-to-analog converter-based all-digital modulator realized in 65-nm CMOS. The isolation between I and Q paths is guaranteed employing 25% duty-cycle differential quadrature clocks. With a 1.3-V supply and an on-chip power combiner, the digital I/Q transmitter...
journal article 2014
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Zhuang, J. (author), Staszewski, R.B. (author)
This paper presents an all-digital phase-locked loop (ADPLL) architecture in a new light that allows it to significantly save power through complexity reduction of its phase locking and detection mechanisms. The natural predictive nature of the ADPLL to estimate next edge occurrence of the reference clock is exploited here to reduce the timing...
journal article 2014
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Ahmadi, M. (author), Wong, S. (author)
Within packet processing systems, lengthy memory accesses greatly reduce performance. To overcome this limitation, network processors utilize many different techniques, for example, utilizing multilevel memory hierarchies, special hardware architectures, and hardware threading. In this paper, we introduce a multilevel memory architecture for...
journal article 2011
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Yang, B. (author), Yarovoy, A.G. (author), Valavan, A.S.E. (author), Buisman, K. (author), Shoykhetbrod, O. (author)
In this paper a novel differentially fed Ultra-Wide Band (UWB) antenna in low-temperature co-fired ceramics (LTCC) technology to be used in the 60 GHz band for integrated RF front-ends is presented. The antenna is based on the aperture stacked patch fed via H-shaped aperture to achieve more than 10 GHz operational bandwidth. The antenna is fed...
journal article 2011
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Xin, Y. (author), Wang, X. (author), Leus, G. (author), Yue, G. (author), Jiang, J. (author)
journal article 2011
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Dong, J. (author), Van Driel, W. (author), Zhnag, G. (author)
This paper describes a new design concept of automatically diagnosing and compensating LED degradations in distributed solid state lighting (SSL) systems. A failed LED may significantly reduce the overall illumination level, and destroy the uniform illumination distribution achieved by a nominal system. To our knowledge, an automatic scheme to...
journal article 2011
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Karami, M.A. (author), Gersbach, M. (author), Yoon, H.J. (author), Charbon, E. (author)
We report on the first implementation of a single-photon avalanche diode (SPAD) in 90nm complementary metal oxide semiconductor (CMOS) technology. The detector features an octagonal multiplication region and a guard ring to prevent premature edge breakdown using a standard mask set exclusively. The proposed structure emerged from a systematic...
journal article 2010
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Van der Toorn, R. (author), Zimmerman, J.T.F. (author)
On the basis of the angular momentum equation for a fluid shell on a rotating planet, we analyze the intrinsic drift of a monopolar vortex in the shell. Central is the development of a general angular momentum equation for Eulerian fluid mechanics based on coordinate-free, general tensorial representations of the underlying fluid dynamics on the...
journal article 2010
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Van den Berg, A. (author), Ren, P. (author), Marinissen, E.J. (author), Gaydadjiev, G. (author), Goossens, K. (author)
Test data travels through a System on Chip (SOC) from the chip pins to the Core-Under-Test (CUT) and vice versa via a Test Access Mechanism (TAM). Conventionally, a TAM is implemented using dedicated communication infrastructure. However, also existing functional interconnect, such as a bus or Network on Chip (NOC), can be reused as TAM; this...
journal article 2010
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Fang, K. (author), Rugini, L. (author), Leus, G. (author)
Modern wireless communication systems require high transmission rates, giving rise to frequency selectivity due to multipath propagation. In addition, high-mobility terminals and scatterers induce Doppler shifts that introduce time selectivity. Therefore, advanced techniques are needed to accurately model the time- and frequency-selective (i.e.,...
journal article 2010
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Simonovic, D. (author), Ande, C.K. (author), Duff, A.I. (author), Syahputra, F. (author), Sluiter, M.H.F. (author)
The interaction of interstitial carbon with substitutional silicon and the effect of this interaction on the diffusion of carbon within body-centered-cubic iron, are computed using electronic density-functional theory. Both the activation energy for diffusion and the diffusion prefactor are predicted. Good agreement is found for those cases...
journal article 2010
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Li, X. (author), Serdijn, W.A. (author), Woestenburg, B.E.M. (author), Bij de Vaate, J.G. (author)
This paper demonstrates that a double-loop transformer-feedback power-to-current low noise amplifier, to be implemented in a 0.2 lm GaAs p-HEMT IC process, is able to obtain a noise figure less than 0.8 dB, an input return loss less than -12 dB, a flat voltage-to-current signal transfer of 180 mS, and an input-referred third-order intercept...
journal article 2009
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Wu, R. (author), Makinwa, K.A.A. (author), Huijsing, J.H. (author)
This paper presents a chopper instrumentation amplifier for interfacing precision thermistor bridges. For high CMRR and DC gain, the amplifier employs a three-stage current-feedback topology with nested-Miller compensation. By chopping both the input and intermediate stages of the amplifier, a 1 mHz 1/f noise corner was achieved at an input...
journal article 2009
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Sarubbi, F. (author), Scholtes, T.L.M. (author), Nanver, L.K. (author)
Nanometer-thick amorphous boron (?-B) layers were formed on (100) Si during exposure to diborane (B2H6) in a chemical vapor deposition (CVD) system, either at atmospheric or reduced pressures, at temperatures down to 500°C. The dependence of the growth mechanism on processing parameters was investigated by analytical techniques, such as...
journal article 2009
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Wang, T. (author), Leus, G. (author), Huang, L. (author)
Sensor positioning is an important task of location-aware wireless sensor networks. In most sensor positioning systems, sensors and beacons need to emit ranging signals to each other. Sensor ranging energy should be low to prolong system lifetime, but sufficiently high to fulfill prescribed accuracy requirements. This motivates us to investigate...
journal article 2009
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Mhamdi, L. (author)
The crossbar fabric is widely used as the interconnect of high-performance packet switches due to its low cost and scalability. There are two main variants of the crossbar fabric: unbuffered and internally buffered. On one hand, unbuffered crossbar fabric switches exhibit the advantage of using no internal buffers. However, they require a...
journal article 2009
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Nanver, L.K. (author), Schellevis, H. (author), Scholtes, T.L.M. (author), La Spina, L. (author), Lorito, G. (author), Sarubbi, F. (author), Gonda, V. (author), Popadic, M. (author), Buisman, K. (author), De Vreede, L.C.N. (author)
This paper reviews special RF/microwave silicon device implementations in a process that allows two-sided contacting of the devices: the back-wafer contacted silicon-on-glass (SOG) substrate-transfer technology (STT) developed at DIMES. In this technology, metal transmission lines can be placed on the low-loss glass substrate, while the...
journal article 2009
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Qureshi, J.H. (author), Pelk, M.J. (author), Marchetti, M. (author), Neo, W.C.E. (author), Gajadharsing, J.R. (author), Van der Heijden, M.P. (author), De Vreede, L.C.N. (author)
A 90-W peak-power 2.14-GHz improved GaN outphasing amplifier with 50.5% average efficiency for wideband code division multiple access (W-CDMA) signals is presented. Independent control of the branch amplifiers by two in-phase/quadrature modulators enables optimum outphasing and input power leveling, yielding significant improvements in gain,...
journal article 2009
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Kashmiri, S.M. (author), Xia, S. (author), Makinwa, K.A.A. (author)
This paper describes the design of a CMOS temperature-to-digital converter (TDC). It operates by measuring the temperature-dependent phase shift of an electrothermal filter (ETF). Compared to previous work, this TDC employs an ETF whose layout has been optimized to minimize the thermal phase spread caused by lithographic inaccuracy. To minimize...
journal article 2009
Searched for: department%3A%22Microelectronics%255C%252B%2526%255C%252BComputer%255C%252BEngineering%22
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