Author Archives: steve bush

Metrology-grade coax accessories stretch to 110GHz

Anritsu has introduced metrology-grade coaxial components for measurements up to 110GHz, as an alternative to waveguide-based products. Fitted with 1mm-compatible W1 connectors, within the selection is a power splitter, a power divider, a directional coupler and some attenuators. “The family removes measurement complexity, reduces measurement setup time, and improves accuracy, making them a superior alternative to millimeter-interfaced ...

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Optical demodulator shuns local oscillator without loosing narrowband finesse

Side-stepping traditional laser local oscillator down-conversion techniques, Australian engineers are using acoustic interactions to retrieve frequency and phase information from Gbit/s modulated optical signals. “Our technique uses the interaction of photons and acoustic waves to enable an increase in signal capacity and therefore speed,” said Dr Elias Giacoumidis of the University of Sidney. “This allows ...

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Polyaniline + zinc ferrite = microwave absorption

A thin coating of a composite made from zinc ferrite and polyaniline absorbs microwave radiation in Ku band, according to researchers at  Anhui University of Science and Technology in China. The composites were synthesised by a two-step hydrothermal and in-situ polymerisation method, with Zn ferrite (2-30nm particles) used to adjust the impedance matching and improve ...

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Surrey delves into triboelectric energy harvesting

University of Surrey scientists have unveiled maths that predicts the behaviour of triboelectric nanogenerators (TENGs) – devices that harvest electricity from contact between two or more materials. “This study redefines the way we understand energy harvesting,” said researcher Ishara Dharmasena. “The tools developed here will help researchers all over the world to exploit the true ...

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EEMBC creates IoT Bluetooth power consumption benchmark for MCUs

Benchmarking consortium EEMBC has created a tool to measure the combined energy consumption of an IoT edge node’s sensor interface, processor, and Bluetooth LE radio interface. Part of the IoTMark benchmarking suite, it is called IoTMark-BLE benchmark. IoTMark-BLE models a node consisting of an I²C sensor and a BLE – radio through sleep, advertise, and ...

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Electronica: Zettler reveals relays for electric vehicles and more

Zettler will be showing relays for electric vehicles, solar and more at Electronica in November. AZEV116 and AZEV132 are IEC mode 2 electric vehicle charging relays in development for release in 2019, and are designed to survive high momentary currents that may occur on short circuits without contact welding. They also have a potential monitoring ...

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RS stocks electric vehicle power connectors

RS Components has introduced a portfolio of high-power connectors from Amphenol that are specifically designed for connecting up power cables used with electric vehicle (EV) drive systems. The MSD series of receptacles and plugs offers a tool-free solution for disconnecting an internal high-voltage battery pack and delivering short-circuit protection. The device uses a two-stage lever ...

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Automotive power LED for projector headlamps hits 200cd/mm²

Osram has introduced a high luminance LED for projection headlamps using DMDs – digital mirror devices – to change headlight beam shape – and more, according to Osram. “Each headlight achieves a resolution of more than one million pixels, offering car drivers not only classic illumination but also optional support from information projected onto the ...

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Imagination and GF collaborate to put low power wireless on SoCs

Imagination Technologies and Global Foundries are to collaborate to offer low-power baseband and RF functions  – Bluetooth Low Energy and IEEE 802.15.4, for example – to mutual customers. The deal combines Imagination’s Ensigma radio IP with 22FDX from GF – its 22nm FD-SOI process. “22FDX is an appealing option for customers designing cost-sensitive devices,” said ...

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US researchers turn to Raspberry Pi for clean air research

The University of Utah turned to Raspberry Pis when it need to equip four homes with smart sensing for clean air research. The Pis controlled the heating, ventilation, and air conditioning (HVAC) system in each house, based on data from three off-the-shelf wireless particulate pollution sensors added to each house, two inside rooms and one ...

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