Concept

Butterworth filter

Related publications (83)

Method and Device for Removing Echo in an Audio Signal

Acoustic echo control and noise suppression is an important part of any "handsfree" telecommunication system, such as telephony or audio or video conferencing systems. Bandwidth and computational complexity constraints have prevented that stereo or multi-c ...

2010

A low-voltage complementary metal-oxide semiconductor adapter circuit suitable for input rail-to-rail operation

Mirjana Banjevic

In this article, a low-voltage complementary metal-oxide semiconductor (CMOS) input signal adapter (ISA) suitable for input rail-to-rail operation of various types of analogue basic building blocks is presented. The adapter acts as a pre-stage with infinit ...

Taylor & Francis2010

205-GHz (Al,In)N/GaN HEMTs

Nicolas Grandjean, Jean-François Carlin, Eric Feltin, Marcus Gonschorek

We report 55-nm gate AlInN/GaN high-electron-mobility transistors (HEMTs) featuring a short-circuit current gain cutoff frequency of f(T) = 205 GHz at room temperature, a new record for GaN-based HEMTs. The devices source a maximum current density of 2.3 A ...

Institute of Electrical and Electronics Engineers2010

RF MEMS Switches for Wide-band (5 - 40 GHz), Tuneable Filters and DMTL Phase Shifters

Montserrat Fernandez-Bolanos Badia

In wireless communications, radio frequency micro-electro-mechanical systems (RF MEMS) technology is attracting tremendous interest across the world as the needs of frequencies gets higher, data bandwidth gets larger and multiple broadband signals have to ...

EPFL2010

IMPEDANCES OF AN INFINITELY LONG AND AXISYMMETRIC MULTILAYER BEAM PIPE: MATRIX FORMALISM AND MULTIMODE ANALYSIS

Nicolas Frank Mounet

Using B. Zotter’s formalism, we present here a novel, efficient and exact matrix method for the field matching determination of the electromagnetic field components created by an offset point charge travelling at any speed in an infinitely long circular mu ...

2010

Long Wavelength VCSL-by-VCSEL Optical Injection Locking

Elyahou Kapon, Vladimir Iakovlev, Alexei Sirbu

Vertical-cavity surface-emitting laser (VCSEL)-by-VCSEL optical injection locking to obtain high cutoff frequencies of 1.3-mu m VCSELs is demonstrated. A detailed physical explanation of the underlying mechanism is presented. VCSELs from the same wafer hav ...

2009

A Frequency Tripler Using a Subharmonic Mixer and Fundamental Cancellation

Francesco Mazzilli

A new odd-order frequency multiplier topology is demonstrated in this work that uses a subharmonic mixer to realize a frequency tripler. A feedforward circuit is used for fundamental cancellation at the output and eliminates the need for filtering structur ...

Institute of Electrical and Electronics Engineers2009

Polynomial Filtering for Fast Convergence in Distributed Consensus

Pascal Frossard, Effrosyni Kokiopoulou

In the past few years, the problem of distributed consensus has received a lot of attention, particularly in the framework of ad hoc sensor networks. Most methods proposed in the literature address the consensus averaging problem by distributed linear iter ...

2009

Wavelength Multicasting of 320 Gb/s Channel in Self-Seeded Parametric Amplifier

Camille Sophie Brès

We report the first 320-Gb/s all-optical wavelength multicast experimental demonstration in two-pump parametric amplifier, assisted by pump-pump self seeding. A single 320-Gb/s channel was successfully multicast to eight wavelengths with minimal conversion ...

Institute of Electrical and Electronics Engineers2009

Investigations on a 1kVA Reactive Power Compensated Current Converter using monolithic RB-IGBT modules

Alfred Rufer, Daniel Siemaszko

This work presents a current converter topology with an added free-wheeling path on the output load. This converter allows the compensation of the reactive power consumption by forcing the input current fundamental component to be in phase with the input v ...

2009

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