Advantest Europe GmbH

Böblingen, Germany

Advantest Europe GmbH

Böblingen, Germany
SEARCH FILTERS
Time filter
Source Type

Sharif W.,Advantest Europe GmbH | Muma M.,TU Darmstadt | Zoubir A.M.,TU Darmstadt
IEEE Transactions on Signal Processing | Year: 2013

Standard spatial time-frequency distribution (STFD) estimators, derived based on the Gaussian noise assumption, are known to have poor performance in the case of impulsive noise. Recently, different STFD estimators have been proposed, which, based on simulations, are claimed to be robust. In this paper, we provide an influence function robustness analysis of STFD estimators. We derive the influence functions for the asymptotic and for the finite-sample case and study robustness of the standard, as well as for some recently proposed robust STFD estimators. The empirical influence function gives practitioners a simple way to pre-select STFD estimators for their scenario. Our analysis confirms that, unlike for the standard estimator, the proposed robust estimators yield a bounded influence function and are robust over a broad class of distributions. Future research on STFD estimation will allow for the design of robust and efficient estimators based on the influence function. © 1991-2012 IEEE.


Yamaguchi T.J.,Advantest Laboratories Ltd. | Yamaguchi T.J.,University of Tokyo | Yamaguchi T.J.,Gunma University | Asada K.,University of Tokyo | And 5 more authors.
Proceedings of the Asian Test Symposium | Year: 2012

This paper proposes a new procedure for calculating high-accuracy PDF estimates, which are free of random error and nearly free of bias error. The procedure is verified experimentally using random jitter and a 16-bitADC. © 2012 IEEE.


Gentili F.,University of Perugia | Gentili F.,University of Graz | Urbani L.,MicroTech | Bianchi G.,Advantest Europe GmbH | And 2 more authors.
IEEE Transactions on Microwave Theory and Techniques | Year: 2014

The design of a four-channel switched filter bank in the S- and C-band using p-i-n-diode switches is described. Narrowband filters (3.2%-3.5%) are designed on suspended substrate stripline. The biasing circuit allows the switches to be driven with transistor-transistor-logic-compatible voltages and minimum biasing current. The average insertion loss measured is 3.6 dB corresponding to a Q-factor of 580. Spurious responses were suppressed from dc to roughly 19 GHz. © 2014 IEEE.


Bianchi G.,Advantest Europe GmbH | Gentili F.,University of Perugia | Sorrentino R.,University of Perugia | Urbani L.,MicroTech | Pelliccia L.,MicroTech
Microwave Journal | Year: 2014

A PIN diode single-pole multi-throw (SPMT) switch with a low-power driver uses a single bias eliminates the need for DC-DC converters and the current required to power them. Since an external user is normally interested in changing an SPMT switch state by using a digital signal without concern for the required internal voltages, a TTL-compatible decoding network based on CMOS components is incorporated as well. The surface-mountable SP4T chip is assembled in a microstrip circuit. Via holes are used to connect its ground to the bottom layer. The bottom layer has a gap that divides the ground plane into two portions. The outer portion is the DC reference which is separated from the inner part by a gap of 150 uμ. RF measurements show that switch insertion loss is comparable to what is achieved using a bipolar voltage supply.


Gentili F.,University of Perugia | Urbani L.,MicroTech | Bianchi G.,Advantest Europe GmbH | Pelliccia L.,MicroTech | Sorrentino R.,University of Perugia
IEEE MTT-S International Microwave Symposium Digest | Year: 2014

The design of a 4-channel switched filter bank in the S-, C-band using PIN diode switches is described. Narrow band (3.2-3.5%) filters are designed on suspended substrate stripline. The biasing circuit allows the switches to be driven with TTL-compatible voltages and minimum biasing current. The average insertion loss measured was 3.6 dB corresponding to a Q-factor of 580. Spurious responses were suppressed from DC to roughly 19 GHz. © 2014 IEEE.


Gentili F.,University of Perugia | Bianchi G.,Advantest Europe GmbH | Pelliccia L.,University of Perugia | Sorrentino R.,University of Perugia
International Journal of Microwave and Wireless Technologies | Year: 2013

A stepped-impedance configuration for coaxial resonators is employed to realize filters in the L-, S-, and C-bands exhibiting a wide spurious-free range. The geometry of a single rod resonator is optimized, by enlarging its top head, in order to maximize the ratio between the frequency of the first higher-order mode and that of the fundamental mode. This leads to the design of a very compact filter with high Q-factors and wide spurious-free bands, up to nearly 5 times the center frequency. To prove the effectiveness of the approach, a sixth-order filter has been designed and manufactured; the comparison between the full-wave simulations and the measurement show excellent agreement. © Cambridge University Press and the European Microwave Association 2013.


Gentili F.,University of Perugia | Pelliccia L.,University of Perugia | Sorrentino R.,University of Perugia | Bianchi G.,Advantest Europe GmbH
European Microwave Week 2012: "Space for Microwaves", EuMW 2012, Conference Proceedings - 42nd European Microwave Conference, EuMC 2012 | Year: 2012

A stepped-impedance configuration for coaxial resonators is exploited to realise filters in the L-, S-, C-band exhibiting a wide spurious-free range. The proposed configuration is realised by optimizing the aspect ratio of a single rod resonator, by enlarging its top head, maximizing the ratio between the frequency of the first higher order mode and the frequency of the fundamental mode. This approach allows for designing a very compact-sized filter which shows high Q-factor performances and a wide spurious-free band, up to nearly 5 times the centre frequency. A 6th-order filter was designed and manufactured and a comparison between the full-wave simulation and the measurement of the filter is reported. © 2012 EUROPEAN MICROWAVE ASSOC.


Huang H.,University of Stuttgart | Heilmeyer J.,Advantest Europe GmbH | Grozing M.,University of Stuttgart | Berroth M.,University of Stuttgart | And 2 more authors.
IEEE Transactions on Microwave Theory and Techniques | Year: 2015

An 8-bit 100-GS/s digital-to-analog converter (DAC) using a distributed output topology in 28-nm low-power CMOS for optical communications is presented. The DAC can convert 1-k symbols stored in the 1-kbyte design-for-test on-chip memory cyclically. By interleaving four 25-GS/s return-to-zero DACs, the highest signal frequency of the 100-GS/s DAC is about 25 GHz and the output image is located beyond 75 GHz. The 3-dB bandwidth exceeds 13 GHz at 100 GS/s. The effective number of bits and spurious-free dynamic range ranges from 5.3 bit and 41 dB to 3.2 bit and 27 dB from dc up to 24.9 GHz at 100 GS/s, respectively. Transmission rates of 120 and 45 Gb/s are obtained in an electrical and an optical back-to-back experiment, respectively. The DAC test chip consumes 2.5 W from a power supply with multiple outputs of 1.1, 1.5, and 2 V. © 2015 IEEE.


Moreira J.,Advantest Europe GmbH | Barnes H.,EEsof EDA | Poisson V.,EEsof EDA
SPI 2015 - 19th IEEE Workshop on Signal and Power Integrity | Year: 2015

This paper presents a comparison of two different printed circuit board (PCB) via field designs for high density ATE pogo pin interconnects running at Gb/s data rates. The first design is a simple straight through, one-for-one, pogo pin to via design while the second is a higher performance via design that does a transformation of the pogo pin pitch. The higher performance design takes the non-uniform signal/ground pin map of the high density pogo block and translates it to a uniform signal-ground-signal topology to increase the useable bandwidth. © 2015 IEEE.

Loading Advantest Europe GmbH collaborators
Loading Advantest Europe GmbH collaborators