Focus on Wireless

Featured articles from Digi-Key Electronics

Wireless technology is now a very important part of the overall electronics scene. There is an enormous variety of wireless technologies from the familiar Bluetooth and Wi-Fi to the more specific standards like LoRa, SigFox, Zigbee and many more. Each wireless standard has its place within the wireless ecosystem and there are modules and different platforms for them. Find out more about these technologies and how you can use them in the Digi-Key Focus on Wireless.

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CFD69383P/CFD69383P1 Ultra-Low-Profile MIMO Ceiling Mount Antennas

Antennas are a key link in any radio system. Laird's CFD69383P and CFD69383P1 are low PIM, 2-port MIMO indoor wideband omnidirectional low-profile ceiling mount antennas. They are designed to provide pattern coverage that is optimised for indoor coverage requirements at 698 MHz to 960 MHz and 1690 MHz to 4000 MHz for the LTE, AWS-3, WCS, and CBRS/WiMAX frequency bands.

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Build More-Effective Smart Devices: Part 3 – Processor Performance

Processor performance is a key issue for smart devices, as designers need to carefully balance processor performance and power consumption. Users expect smart devices to be highly capable, secure, and have extended battery life. To help meet these expectations, developers now have at their disposal MCUs that not only provide sufficient low-power performance and memory to meet immediate feature requirements, but which also enable secure updates for feature enhancements and bug fixes. Read more . . .

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Build More-Effective Smart Devices: Part 2 – Secure Design

Designers of IoT connected devices such as wearables increasingly recognise the need for security and authentication in the face of threats to data confidentiality, integrity, and authenticity. Security is possibly one of the most important issues. However, the challenge is to secure devices while consuming minimal power and without compromising the user experience. Read more . . . .

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Build More Effective Smart Devices: Part 1 – Low-Power Design with MCUs and PMICs

With the number of smart devices entering the market, the stadnards are high as is the entry gate for successful products. Wireless IoT and wearable electronic products rely on low-power designs able to deliver extended battery life. Yet, tight power budgets bump up against the demand for more functionality that can force developers to turn to large batteries and recharging requirements that can be cumbersome to users. Solutions that provide a more thoughtful approach to both processing and power management are required. Read more . . .

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How to Use Analog Switches to Dynamically Switch Audio and Video Signals

Audio circuit design is never as easy as it appears at first sight. The high performance required in many areas means that very high levels of performance are needed. When switching audio and video signals the challenge is doing so without introducing noise, while avoiding signal loss from device resistances or incidental capacitance. While CMOS analog switches are effective and efficient, designers need to be aware of critical parametric trade-offs to apply them correctly. Find out more . . .

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2G and 3G are Sunsetting: Select the Right Protocol for an IoT Network

2G and 3G technologies have been in existence for many years and form the backbone for many low data-rate IoT systems. However with many operators re-farming 2G and 3G spectrum and looking at closing 2G and especially 3G networks, it is imperative to select the right options for the future. Find out more about the options available . . . .

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Implement Flexible Smart Lighting Quickly and Easily with Zigbee Light Link

The use of smart lighting is growing rapidly. It combines the use of brings efficient LEDs with many customisable features together and the use of low-power wireless technology. However, due its expansion, developers are under constant pressure to minimise the cost per connection while also accelerating development time. With thousands or hundreds of thousands of light connections, a mature, reliable, low-power wireless connection is required. Find out more . . .

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Designing Bluetooth Low Energy Smart Applications with Bluetooth Mesh - Part 2

Bluetooth mesh is a capability that is providing to be particularly useful for many IoT applications. It brings the notable advantages of networking to the popular short-range protocol. These were discussed in detail in Part 1. However, the specification also brings new design challenges, particularly when it comes to implementing its models. Find out more . . .

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How to Rapidly Add NFC Capability to Any Application

NFC, near field communications has now become a mainstream technology that is incorporated into many devices. To meet the growing demand for NFC, developers are being asked to quickly create optimised designs that incorporate it. Conventional approaches only give slow development as designers work though challenges such as RF circuit optimisation, NFC protocol management, power consumption, and minimal design footprint. Find out how to speed up designs with NFC.

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Add Compensated Air Quality Sensors to the Internet of Things

Smart building systems can incorporate air quality sensors so engineers can implement early warning of the buildup of hazardous gasses and chemicals, but commercial air quality sensors lack the integrated capabilities required to join a smart building network. However, by turning to easy-to-use development kits, engineers can add the processing power and wireless capability demanded to overcome this deficiency. Read more . . .

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Using Google’s Vision API For Low-Cost, Cloud-Enabled Embedded Image Recognition

Increasingly, embedded systems need to perform image recognition in the field whether it’s facial, text, or some other image data. Many implementations require an expensive, high-end applications processor with custom and expensive application code, and this can make development difficult, time consuming and costly. One potential solution is to use an embedded micro-controller that can connect to the Google Cloud Platform (GCP) and use its vision APIs to perform the analysis. Read ore about how this can be done . . . .

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Take the Fast Track to Bluetooth 5 Mesh Networking

Bluetooth 5 has introduced a mesh networking capability and this means developers can enhance the range and network availability of wirelessly connected systems, such as IoT devices. However, mesh networking has layers of complexity between low-power wireless hardware design and mesh networking software development that can quickly entangle developers and jeopardize project schedules. In response, silicon and software vendors are introducing solutions to simplify and accelerate the development process. Read more . . .

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Connect Designs Quickly and Securely to the Cloud Using Amazon FreeRTOS

A traditional embedded systems developer normally works at the bare metal level on disconnected devices. Now with the IoT requiring systems to connect to the Internet, it means that embedded system developers need to learn how to connect their devices and use a higher level operating system, such as a real-time operating system (RTOS). Rather than starting from scratch and learning every nuance required to securely connect an embedded system to the Internet, developers can use Amazon FreeRTOS. Find out more . . .

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Makers and Engineers: Get to Know Your Instrumentation Amplifier for Accurate IoT Data Capture

One of the major types of node for the IoT is for sensors. These are key to many applications where a variety of measurements need to be made for running a home or a production process. Sensing is where the Internet of Things (IoT) and the smart home begins, and it’s where DIYers, makers, and even professional designers run into their first problem. Many inexpensive transducers such as accelerometers, force sensors, strain gauges, and pressure transducers are designed around resistive Wheatstone bridges, so their outputs are differential voltages in the millivolt (mV) region.

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A Simple Solution Simplifies Authentication to Ensure Device Security

Security is incredibly important for any IoT device. Poor security can enable hackers to access systems or take over even what may seem like harmless devices for their attacks. The ability to authenticate data or operations in a system is a fundamental requirement for security. For developers, implementing the detailed steps required for authentication can be challenging, particularly in resource constrained systems. Even when resources are available, time to market pressures and lack of awareness can result in shortcuts during development that can leave the final system compromised. Read more . . .

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Use HyperBus to Expand Memory in Tiny IoT and Wearable Designs to Save Space and Cost

The Hyperbus can be used to provide some significant advantages for IoT devices. With IoT nodes and wearable devices shrinking, designers need to make maximum use of their microcontroller’s on-board memory to minimize board space, power, and cost. However, sometimes memory expansion cannot be avoided. Instead of defaulting to a 32-bit controller’s bus structure, designers should consider HyperBus, a high-speed, 333 Mbit/s, 8-bit, double data rate (DDR) interface for both address and data. Read more . . .

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How to Optimize Energy Use in IoT Edge Devices

Battery life is a really key parameter for remote IoT devices. Replacing a battery can be time consuming and costly, or they may not be replaced and the device may fail as a result. A prime objective is to extend the time between recharges, or in the case of standard cells, the lifetime of the battery. There are many traditional approaches, but these lack the necessary system level perspective needed to fully optimize a design. Find out more . . . .

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Design Location Tracking Systems Quickly Using GNSS Modules

Asset tracking is big business. Knowing where valuable items are at any time with a high degree of accuracy increases productivity, enhances security, and lowers cost. However, asset tracking has been limited to high value items because high-quality Global Navigation Satellite System (GNSS) receivers can be difficult to design and implement, expensive, and power hungry. Reducing cost and hitting the market quickly are key elements of a successful product. Find out some of the main elements of speedy and successful development. . . .

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How to Quickly Implement a Qi Standard Compliant Wireless Charging System

Wireless charging is now becoming very widespread with many phones having the option for wireless charging, enabling users the freedom of not requiring a lead to provide the link to the charger. While standards such as the Wireless Power Consortium (WPC) Qi specification help support higher power charging levels, developers still face multiple challenges when it comes to designing circuits, pc boards, and firmware to fully optimize wireless power transfer to mobile devices. Read more . . .

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Speed Development of Secure Cellular Connected IoT Applications

Cellular technologies offer an increasingly attractive option for IoT connectivity thanks to emerging solutions from hardware manufacturers and cellular service providers. Even with the growing availability of cellular hardware modules, IoT development nevertheless faces significant delays as developers grapple with low-level handshaking and higher level service protocols, while also ensuring a secure implementation. However developing new products quickly is key to entering the market at the right time and not missing the opportunity. Find out the best ways to develop secure connected IoT applications.

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How to Select, Use, and Maintain Coaxial Connectors for RF Applications

With the massive increase in radio frequency communications for everything from mobile communications to other forms of wireless connectivity, the need for RF connectors has never been greater. Selecting the right connectors can make a huge difference in a product: balancing cost and performance is not always easy. It is also very important to use these connectors correctly and maintain them to ensure that the best performance is secured. Find out how. . . .

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Long-range low-power wireless network have the potential to create the Internet of Agricultural Things Mark Patrick | Mouser Electronics
Long-range low-power wireless network have the potential to create the Internet of Agricultural Things
The application of technology has always driven an increase in productivity, the two are inextricably linked because it is often the demand for higher productivity that provides the motivation for achieving technological breakthroughs; necessity is the mother of invention, after all.

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