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Power amplifier delivers native linearity sufficient for extreme temperatures

Thu, Aug 27, 2020

The first of several 0.25W linear power amplifiers scheduled for release by Guerilla RF is the GRF5507 which provides 24dBm output power.

The InGaP HBT power amplifier targets 5G/4G wireless infrastructure applications which require “exceptional” native linearity over temperature extremes of -40 to +85°C.

Operating over the 700 to 800MHz frequency range, the GRF5507 is tuned to operate within the n12, n14, n28 and n29 5G new radio (NR) bands. It can deliver over 24dBm of linear power over the entire – temperature range while maintaining ACLR levels of better than -45dBc, IMD3 levels less than -20dBm, EVM levels less than one per cent and PAE efficiencies above 15 per cent. These are achieved without the aid of supplemental linearisation schemes like digital pre-distortion (DPD).

The ability to beat the -45dBc ACLR performance metric without DPD is critical for cellular applications like home and commercial repeaters/boosters, femto cells, pico cells and cable loss compensators associated with automotive ‘shark fin’ antennae. In each of these use cases, the sensitivity to cost, power and size constraints prohibits the use of elaborate linearisation techniques like DPD, explains Guerrilla RF. Designers therefore have to rely on the power amplifier’s native linearity to meet the stringent emissions mask requirements demanded by the latest 5G and 4G standards.

Guerrilla RF designed the power amplifiers to be footprint compatible, enabling customers to rapidly customise their designs for a range of cellular frequencies.

The GRF55xx family comes in pin-compatible 3.0 x 3.0mm, 16-pin QFN packages. The common footprint enables a single design to address multiple bands via simple component swaps, says the company.

Samples and evaluation boards are available now.

Based in Greenboro, North Carolina, USA, Guerrilla RF provides high performance monolithic microwave integrated circuits (MMICs) to wireless OEMs in multiple market segments, including 5G/4G macro and small cell base stations, cellular repeaters/DAS, automotive SDARS/V2X/DAB, mission-critical military communications, navigation and high-fidelity wireless audio.

https://guerrilla-rf.com

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Connected Buildings suite modernises infrastructure for smart cities

Thu, Aug 27, 2020

Solutions integrator, Black Box, has created Connected Buildings, a suite of solutions and services that enable digital experiences in smart, IoT buildings. The company designs, deploys, manages and maintains the foundational technology that connects the internal ecosystem of interoperable devices and sensors to enable human-to-human, human-to-device and device-to-device interaction.

Connected Buildings services modernise the IT infrastructure, solve in-building connectivity challenges and link clients’ devices at locations around the world.

“Now more than ever, our customers need spaces that are interactive, adaptive, automated and secure,” said Doug Oathout, senior vice president, Portfolio and Partnerships, Black Box. “At Black Box, we apply our broad portfolio . . . . to take the complexity out of connected buildings and make it simple for our customers by giving them one trusted partner to handle their IT services. Whether updating hundreds of existing locations or outfitting one location from the ground up, our team of project managers, engineers and technicians works with our clients to craft a solution that creates consistent customer experiences and reliable communications,” he said.

The Black Box Connected Building is enabled by fast, robust technologies, for example 5G/CBRS and Wi-Fi to augment existing wireless systems and create fully connected buildings. It also uses edge networking and data centres to collect data where it is created and combine it with artificial intelligence (AI) to make smarter devices. Addressing cybersecurity there is incident and event monitoring, endpoint detection and response, and VPN and firewall services.

The Connected Building services include assessment, consulting and project management, coupled with on-site services for configuration, staging, installation and logistics.

The services fall into four categories. There are those for multi-site deployments, where the Black Box team is able to handle large-scale national/global installations and provide uniform IT at hundreds or thousands of sites.

There are also IoT deployments, where the team supplies and installs cameras, digital signage, point of sale (POS), sensors and other in-building IoT technologies.

Another category is structured cabling and networking, to ensure the infrastructure necessary to support future bandwidth requirements.

Finally, digital transformation covers the management of implementations and deployments of the IoT.

http://www.bboxservices.com

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Smart factory ATX motherboard is based on Intel Xeon E processor

Thu, Aug 27, 2020

For the smart factory, Axiomtek offers the IMB525R ATX industrial motherboard which is versatile and offers superior graphics performance, says the company.

The IMB525R server-grade ATX motherboard is powered by the Intel Xeon® E, 9th/8th generation Intel Core, Intel Pentium or Intel Celeron processors with the Intel C246 chipset. According to Axiomtek it is flexible with I/O expandability and supports error correcting code (ECC) memory which provides improved data integrity and system reliability through automatic data correction.

The IMB525R is specifically suited for industrial workstations, embedded networks, factory automation, robotic motion control, machine vision, and testing and measurement. It has five SATA-600 ports with software RAID 0/1/5/10 for reliable data storage and protection and four 288-pin DDR4-2666/2400 ECC DIMM slots with a maximum memory capacity of 128Gbyte. In addition, it can be expanded with one PCIe x16 slot, two PCIe x4 slots, four PCI slots and one PCI Express Mini Card slot, according to customer requirements.

It also supports Trusted Platform Module 2.0 (TPM 2.0) to enhance network security whether as a cloud server, data centre or for industrial IoT (IIoT) applications. The Intel Coffee Lake Refresh-based ATX motherboard is designed to reduce overall development cost and speed up time-to-market, adds Axiomtek. There is also a watchdog timer and hardware monitoring functions.

The IMB525R is integrated with the Intel UHD Graphics 630 for visual performance, enabling triple simultaneous displays via DisplayPort++, HDMI, DVI-D, and VGA for multi-display applications. There are two USB 3.1 Gen 2 ports, four USB 3.1 Gen 1 ports and seven 180D type A USB 2.0 ports and four RS-232, two RS-232/422/485, two Gigabit LANs with Intel Ethernet controller I211-AT and Intel Ethernet connection I219-LM, eight-channel digital I/O, one HD Codec audio, one SMBus, and one PS/2 keyboard and mouse.

Operating temperature ranges from 0 to +60 degrees C for use in harsh environments.

http://www.axiomtek.com

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HD image sensor operates on low light security cameras for IoT

Wed, Aug 26, 2020

A sensor for consumer IoT security cameras by OmniVision Technologies is claimed to feature best in class low-light image capture with improved SNR1 and reduced power consumption.

The OS02G10 security image sensor provides the best value for mainstream, high-volume security cameras requiring 1080p resolution, maintains Omnivision. It offers what is claimed to be best-in-class low-light captures via a 2.8 micron pixel built on the OmniPixel 3-HS architecture. The architecture has high quantum efficiency and an optimal signal to noise ratio SNR. Compared with OmniVision’s earlier generation mainstream security sensor, the OS02G10 has a 60 per cent better SNR1 and 40 per cent lower power consumption.

OmniVision uses 12-inch wafers, rather than eight-inch wafers, to produce the OS02G10, enabling the company to enables the company to better address the increasing demand for 2Mpixel, 1080p sensors which is a popular resolution for consumer-grade IoT security cameras as well as low-end industrial and commercial surveillance cameras.

“With this new generation, we have significantly improved low-light performance while continuing to offer the market greater value in the popular 1/2.9 inch optical format,” commented Cheney Zhang, senior marketing manager for the security segment at OmniVision.

Other key features include a 15 degree CRA, which is compatible with a range of widely available lenses. This sensor also offers an integrated dynamic defective pixel correction algorithm for optimal image quality, and a two-lane MIPI interface. It provides 2MP, 1080p resolution at 30 frames per second.

Samples of the new OS02G10 image sensor are available now in a compact chip-scale package.

OmniVision Technologies develops advanced digital imaging solutions. It claims that its award-winning CMOS imaging technology enables superior image quality in many of today’s consumer and commercial applications, including mobile phones, security and surveillance, automotive, tablets, notebooks, webcams and entertainment devices, medical and augmented reality (AR),virtual reality (VR), drones and robotics imaging systems.

http://www.ovt.com

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Power amplifier delivers native linearity sufficient for extreme temperatures

Connected Buildings suite modernises infrastructure for smart cities

Smart factory ATX motherboard is based on Intel Xeon E processor

HD image sensor operates on low light security cameras for IoT

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