Tuesday, 13 June 2017

Rohde & Schwarz slashes phase noise in RF signal generator

The result is a signal generator which can match higher output power and a spurious free dynamic range.
Designated the R&S SMA100B, which comes as a 6GHz instrument capable of generating up to 38dBm RF output power, or a 20GHz instrument generating up to 32dBm in the microwave frequency range.
Harmonic performance above 6GHz is specified at lower than 70dBc at 18dBm output power. Non-harmonics are below 110dBc at an output signal of 1GHz.

Wellington's future looks bright with 18,000 LED lights

It's going to be all white in the capital as the city prepares to switch to the more energy-efficient street lighting.

All 18,000 yellow sodium vapour lamps in Wellington could be replaced with new white light-emitting diode (LED) lights by next year, if the conversion is approved by Wellington City Council at its Annual Plan deliberations on Thursday.

The conversion would cost $15.2 million, but the council would share the cost with NZTA, which would provide all but $2.3m of the funding.

E Ink demos a foldable 10.2 inch display, among other things

E Ink is probably best known for making the paper-like electronic displays used in Kindle, Nook, and Kobo-style eBook readers. But the company also makes displays used for industrial and commercial products including digital signage and whiteboards.

Today the company announced that its E Ink Prism displays are now available in seven color options, allowing designers to build interactive displays into architecture.

And recently the company showed off a new foldable grayscale display that could be used for eBook readers that fold up… like a book.

Liquid tin-sulfur compound shows thermoelectric potential

Glass and steel makers produce large amounts of wasted heat energy at high temperatures, but solid-state thermoelectric devices that convert heat to electricity either don’t operate at high enough temperatures or cost so much that their use is limited to special applications such as spacecraft. MIT researchers have developed a liquid thermoelectric device with a molten compound of tin and sulfur that can efficiently convert waste heat to electricity, opening the way to affordably transforming waste heat to power at high temperatures.
Youyang Zhao, a graduate student in assistant professor of metallurgy Antoine Allanore’s research group, built a thermoelectric test cell that operates in a liquid state at temperatures from 950 to 1,074 degrees Celsius (1,742 to 1,965 degrees Fahrenheit). Commercial thermoelectric devices, based on materials such as solid-state bismuth telluride, operate at about 500 C, and a block of bismuth telluride costs in the neighborhood of 150 times more than tin sulfide per cubic meter.

Friday, 9 June 2017

Nitrades in transition

The average, everyday person might not be familiar with gallium nitride, also known as GaN, but there is a good chance they've heard of silicon, a semiconductor that's been used for decades and found in every computer and most electronics.

As a semiconductor, GaN is similar to silicon, but it differs in its elemental makeup and properties, which makes it a more robust, rugged type of electronic material. GaN's qualities allow it to operate at nearly five times higher power and temperature than silicon and commercial commodity semiconductors in certain applications.
Solid-state (or LED) lighting and wireless data transmitters for cell phone base stations are two examples where GaN has made a considerable impact over the past few years. Power switching components for solar inverters and electric vehicles are also moving towards GaN technology due to its ability to improve efficiency.
"GaN technology ultimately saves energy compared to incumbent technologies and can typically be packaged in smaller and lighter form factors," said Dr. David Meyer, U.S. Naval Research Laboratory (NRL) section head for wide bandgap materials and devices in the Electronics Science and Technology Division.

The successes, challenges and opportunities for Wales' tech ecosystem

Wales is a small, agile and dynamic country, which punches well above its weight when it comes to developing the enabling technologies that advance the way we all work and live.

The importance of the Welsh technology sector cannot be overstated. Our industry generates over £8bn for the Welsh economy and the achievements of its 3,000 businesses and the 40,000 people they employ must be recognised.

Instrument Systems to Present Numerous Innovations at LASER World of PHOTONICS 2017

At LASER World of PHOTONICS, due to be held in Munich from 26- 29 June 2017, Instrument Systems will be showcasing many new products for the measurement of displays, UV sources and laser diodes, together with an extensive portfolio of spectroradiometric instruments.

Display measurement technology with the new LumiCam 2400 With the LumiCam 2400 Instrument

Systems presents a new imaging photometer and colorimeter for the characterization of displays, control and display elements. The LumiCam 2400 – expected to be available by autumn – delivers images with an effective 5 megapixel resolution, enabling the evaluation of extended instrument clusters or small details with an extremely high resolution. The respective software calculates all relevant variables, e.g. luminance, color coordinates, color temperature, color homogeneity or dominant wavelength. A wide range of analysis tools enable a comprehensive evaluation of the measured values. The LumiCam software also offers freely configurable false color presentation for the impressive visualization of data.

LG Innotek Develops Semiconductor that Can Replace Cooler

LG Innotek plans to load thermoelectric semiconductors into small appliances such as refrigerators and water purifiers ahead of others. Whi...