The KEKB accelerator is a 3 km circumference doublering collider which has six RF accelerating stations and will have two station for crab cavities. Each station is 800 m from the other. A stable RF phase reference is necessary for stable RF cavity operation. Coaxial cables with phase locked loops are used for the present system. A more stable RF phase reference is required for the crab cavity ...

A timing system was constructed for Accelerator Test Facility(ATF) for future linear collider R&D at KEK. The operation of the ATF has several features, for example, multi-bunch acceleration, delta-f energy compensation, multi-train storage, etc.. The timing system provides synchronized reference signals and trigger signals for each hardware. To keep stable phase relationships at each component...

In this paper we show how to extend the known algorithm of nodal analysis in such a way that, in the case of circuits without nullors and controlled sources (but allowing for both, independent current and voltage sources), the system of nodal equations describing the circuit is partitioned into one part, where the nodal variables are explicitly given as linear combinations of the voltage source...

An ultra-low power clock reference generator has been developed using a 0.35-μm CMOS parameters. The circuit is based on a simple frequency-locked loop technique with no inductors, quartz resonators, and MEMS oscillators. Theoretical analyses and measurement results showed that the clock frequency could be controlled over a frequency range of 20 kHz 2 MHz. The circuit showed a temperature coeff...

In the past few years, several tools for the automation of the analog integrated circuit (IC) cell and system layout design, with application on both new and reused designs have emerged. Yet, most of the layout design is still handmade, essentially because analog designers want to have total control over the different design options, and also, due to the fact that current fully automated genera...

Before any two entities can communicate, there must exist a physical medium across which the communication can take place. In an integrated circuit, this medium takes the form of electrical connections between various parts of the circuit. Although these electrical connections can be created by hand, the process is time consuming, boring, and prone to error. For some circuits, creating the elec...

The design of a Dynamic Voltage Restorer that is suitable for compensating regional voltage sags in 10kV distribution system is introduced in this paper. The design of the main circuit based on cascaded H-bridge, the device for energize DVR and the transformer-less coupled circuit are presented. For the voltage sags in neutral point non-grounded system, a reference voltage calculation method wi...

A low-voltage temperature sensor designed for MEMS power harvesting systems is fabricated. The core of the sensor is a bandgap voltage reference circuit operating with a supply voltage in the range 1–1.5 V. The prototype was fabricated on a conventional 0.5 mm silicon-onsapphire (SOS) process. The sensor design consumes 15 mA of current at 1 V. The internal reference voltage is 550 mV. The temp...

Lab-on-Chip is a technology that could potentially revolutionize medical Point-of-Care diagnostics. Considerable research effort is focused towards innovating production technologies that will make commercial upscaling financially viable. Printed circuit board manufacturing techniques offer several prospects in this field. Here, we present a novel approach to manufacturing Printed Circuit Board...

A low-power temperature-sensing oscillator was developed using a 0.35m standard CMOS process. This oscillator generates a clock pulse whose frequency is proportional to absolute temperature (PTAT frequency). It consists of a PTAT current generator controlled with an external reference clock and a frequency-locked loop biased with an external reference voltage. The PTAT current generator makes u...