Direct measurements of propagation delay of single-fluxquantum (SFQ) circuits were performed using SFQ double-oscillator time-to-digital converters. The propagation delay of several SFQ logic gates in our cell library named CONNECT were measured in picosecond resolution. Small discrepancy in the propagation delay of picosecond level was observed between measurement and circuit simulation result...

Voltage scaling has been often used for reducing power dissipation of CMOS driven interconnects. An undesired effect observed due to voltage scaling is increase in propagation delay. Thus a trade off lies between power dissipation and propagation delay with voltage scaling. However, voltage scaling can result in overall reduction of power delay product (PDP). Therefore, their lies an optimized ...

Process variation has recently emerged as a major concern in the design of circuits including interconnect in current nanometer regime. Process variation leads to uncertainties of circuit performances such as propagation delay. The performance of VLSI/ULSI chip is becoming less predictable as MOSFET channel dimensions shrinks to nanometer scale. The reduced predictability can be ascribed to poo...

|Ultra-wide bandwidth (UWB) signal propagation experiment is performed in a rural terrain to characterize the outdoor UWB signal propagation channel. The bandwidth of the signal used in this experiment is in excess of one GHz. The test apparatus and measurement technique are described. From the measured pulse response the mean delay, delay spread, propagation loss and forestation loss are deter...

In a wireless network, where propagation delay is high but known, slotted Aloha (S-Aloha) is synchronized with respect to the receiver’s time slots. Since the transmitter knows the propagation delay to its receiver, after a frame is generated, the transmitter introduces a suitable delay before its transmission, such that the frame arrives exactly in a slot at the receiver. However, in an underw...

With the advent in WAN of delay sensitive technical applications, such as remote control, signal propagation delay becomes a major problem. The extent of the problem is analysed by lower bounding the delay in relation to different transmission media. Requirements for reliability and bandwidth are considered. The consequences of this bounding for communication network planning and provisioning a...

Abstact: In on-chip buses, the RC crosstalk effect leads to serious problems, such as wire propagation delay and dynamic power dissipation. Crosstalk noise is dominated by the coupling capacitance, resulting in wire propagation delay, logical malfunction and power dissipation on on-chip buses. Therefore, eliminating crosstalk effects have become a very important consideration in the development...

Capacitive and inductive crosstalk noises are expected to be more serious in advanced technologies. However, capacitive and inductive crosstalk noises in the future have not been concurrently and sufficiently discussed quantitatively, though capacitive crosstalk noise has been intensively studied solely as a primary factor of interconnect delay variation. This paper quantitatively predicts the ...

In previous papers we have presented a very accurate model that handles the generation and propagation of glitches, which makes an important headway in logic timing simulation. This model is called Delay Degradation Model (DDM). Characterizing DDM completely also implies the characterization of the normal propagation delay. In this paper, we propose a simple heuristic model that includes its de...