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A PLL based 12GHz LO generator with digital phase control in 90nm CMOS

A 12 GHz PLL with digital output phase control has been implemented in a 90 nm CMOS process. It is intended for LO signal generation in integrated phased array transceivers. Locally placed PLLs eliminate the need of long high frequency LO routing to each transceiver in a phased array circuit. Routing losses are thereby reduced and design of integrated phased array transceivers become more modular.

Competition between terminating and collective structures above spin 40 hbar in 154Dy

High-spin states in 154Dy were studied with the Gammasphere spectrometer using the 36S(122Sn,4n) reaction. Band terminating states were identified in the spin range I=(36–48)ħ, and were found to compete with collective rotational cascades up to the highest observed spins. Several “sidebands” feeding the terminating structures were identified as well. A band dominated by M1 transitions was observed

Enhanced Micromechanical Modelling of Martensitic Phase-Transitions Considering Plastic Deformations

The purpose of this contribution is the presentation of a micromechanical model for martensitic phase transformations which can be applied to a wide range of materials like shape memory alloys (SMA), TRIP-steels (TRansformation Induced Plasticity) and piezoceramics. One of the key-features of the model is the consideration of several martensitic variants in addition to the parent phase austenite b

Quantum dots-in-a-well infrared photodetectors for long wavelength infrared detection

We report on a quantum dots-in-a-well infrared photodetector (DWELL QDIP) grown by metal organic vapor phase epitaxy. The DWELL QDIP consisted of ten stacked InAs/In0.15Ga0.85As/GaAs QD layers embedded between n-doped contact layers. The density of the QDs was about 9 x 1010 cm-2 per QD layer. The energy level structure of the DWELL was revealed by optical measurements of interband transitions, an

It takes a winner to take his share

Novelty detection is based on the creation of a space with similarity metric. It is discussed that the design of a neural detector is a compromise between promptness, universatility, robustness and sensitivity. The feed-forward topology is chosen from three alternatives for its ability to design that compromise by applying structural redundancy. A generic FPGA implementation supports the use in ad