editor's blog
Subscribe Now

Wireless Phone Charging Without the Extra Antennas

Antenna_pic.jpgAbout a year ago, when we were in the wake of numerous wireless power announcements, we discussed a technology called “Cota” from a company called Ossia. The idea was of using very high frequency charging – 2.4 GHz – at low power to keep a constant trickle charge going at distances up to around 30 feet (10 meters) or so.  Effectively, the charger sends out RF signals and the phone harvests them. Meaning that your phone could charge unbeknownst to you while still in your pocket – no need to take it out and put it on some pad.

But of course, there’s always a “but.” And, in this case, it was the antenna: as in, you needed one for this. Actually, you needed more than one, since they use a phased approach. In addition to the antennas that are already in your phone. A clear real-estate challenge.

Well, this year, they just announced that they can now leverage the existing WiFi and Bluetooth antennas that are already in the phone. There are some required circuit and firmware changes, but they claim no additional components. In fact, they say that this approach can actually save space: in a world with lots of Cota chargers, you could make do with a smaller battery, since it would be frequently topped up as you moved around town.

You can learn more in their announcement.

Leave a Reply

featured blogs
Jan 27, 2021
Why is my poor old noggin filled with thoughts of roaming with my friends through a post-apocalyptic dystopian metropolis ? Well, I'€™m glad you asked......
Jan 27, 2021
Here at the Cadence Academic Network, it is always important to highlight the great work being done by professors, and academia as a whole. Now that AWR software solutions is a part of Cadence, we... [[ Click on the title to access the full blog on the Cadence Community site...
Jan 27, 2021
Super-size. Add-on. Extra. More. We see terms like these a lot, whether at the drive through or shopping online. There'€™s always something else you can add to your order or put in your cart '€“ and usually at an additional cost. Fairly certain at this point most of us kn...
Jan 27, 2021
Cloud computing security starts at hyperscale data centers; learn how embedded IDE modules protect data across interfaces including PCIe 5.0 and CXL 2.0. The post Keeping Hyperscale Data Centers Safe from Security Threats appeared first on From Silicon To Software....

featured paper

Common Design Pitfalls When Designing With Hall 2D Sensors And How To Avoid Them

Sponsored by Texas Instruments

This article discusses three widespread application issues in industrial and automotive end equipment – rotary encoding, in-plane magnetic sensing, and safety-critical – that can be solved more efficiently using devices with new features and higher performance. We will discuss in which end products these applications can be found and also provide a comparison with our traditional digital Hall-effect sensors showing how the new releases complement our existing portfolio.

Click here to download the whitepaper

Featured Chalk Talk

Cloud Computing for Electronic Design (Are We There Yet?)

Sponsored by Cadence Design Systems

When your project is at crunch time, a shortage of server capacity can bring your schedule to a crawl. But, the rest of the year, having a bunch of extra servers sitting around idle can be extremely expensive. Cloud-based EDA lets you have exactly the compute resources you need, when you need them. In this episode of Chalk Talk, Amelia Dalton chats with Craig Johnson of Cadence Design Systems about Cadence’s cloud-based EDA solutions.

More information about the Cadence Cloud Portfolio