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Issues on power consumption and IR-drop in testing become serious problems. Some troubles, such as tester fails due to too much power consumption or IR-drop, test escapes due to slowed clock cycle, and so on, can happen in test floors. In this paper, we propose a power and noise aware scan test method. In the method, power-aware DFT and power-aware ATPG are executed based on the preliminary power/noise...
A 9.5 mW 20 Gb/s 40times70 mum2 inductorless 1:4 DEMUX in 90 nm CMOS process is presented. In order to reduce power and area, the DEMUX uses a multi-phase clock architecture that requires a smaller number of latches operating at a slower clock rate than in the conventional tree architecture. To provide low-voltage scalability, the latches operate with a near-tail-to-rail logic swing. It is realized...
We have demonstrated that a superconductor-insulator-superconductor (SIS) mixer pumped by a photonic local oscillator (LO) covers the whole frequency range of 0.2-0.5 THz. In the bandwidth of 74 % of the center frequency, this single-band receiver exhibits the noise temperature of TRXles20hf/kB, where h is Planckpsilas constant, f the frequency, and kB Boltzmann constant. Resultant TRX is almost equal...
Recently, we proposed a random transmit power control (TPC) to increase the uplink capacity of DS-CDMA wireless packet access using Rake combining. Furthermore, we evaluated the combined effect of random TPC and inter-path interference (IPI) cancellation and showed that a significant throughput improvement can be achieved if the IPI is sufficiently suppressed. Frequency-domain equalization (FDE) is...
This paper presents a CMOS voltage controlled oscillator (VCO) with a high-Q inductor fabricated by using a commercial wafer-level-package (WLP) technology. A new topology suitable for CMOS VCOs with high-Q WLP inductors is proposed. Measured Q of a WLP inductor is 40 in differential mode at around 1.9 GHz. A phase noise is -134.4 dBc/Hz at a 1 MHz offset for 1.9 GHz carrier frequency, and a FoM is...
This paper presents a feasibility study on VCO using RF SiP technology, which is an RF application of stacked SiP. An off-chip inductor is implemented in a separated chip, and measured Q factor is 130. A phase noise is -119 dBc/Hz at 1 MHz offset for a 5.84-GHz carrier frequency, and frequency tuning range is 5.73 GHz-5.95 GHz. Power consumption is 1.93 mW, and 180 nm CMOS process is utilized. FOM...
Pilot-wire differential relays have a long track-record of providing effective and reliable protection for overhead lines and underground cables in many parts of the world. The conventional analogue or electromechanical types are, however, limited in that they cannot provide the high performance and advanced features which have become commonplace in modern digital protection systems. The authors have...
A narrow linewidth, widely tunable, fast-data-acquisition injection-seeded THz-wave parametric generator (is-TPG) was developed. It is a powerful source for practical applications in the THz-wave regime. Wavelength-modulated THz-wave spectroscopy is developing based on this is-TPG.
Positron emission tomography dynamic study together with compartment model analysis allows the quantification of radioligand binding to receptor sites in the human brain. In the quantitative analysis, parameter estimate error is affected by noise that depends on the collected count, and the reliability of estimated kinetic parameters is important for assessment of the binding potential. However, evaluation...
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