editor's blog
Subscribe Now

Towards One Less Antenna?

Right at the beginning of this last year, we took a look at WiSpry; they make a MEMS-based tuning product for dynamically adjusting the antenna matching characteristics dynamically as things change. Things like grabbing the phone in the natural (but wrong) place. Not that that would ever happen; I’m sure such phones would always “just work.” But… just in case…

Such capabilities sound great in theory, but WiSpry recently ran an actual test – one that can’t be accused of being a best-case idealized one either. They purchased two phones and literally opened one of them up, replacing the stock tuner with theirs, and then compared the bandwidths between the two phones. The stock phone had 25 MHz bandwidth; the modified phone? 150 MHz.

At issue specifically here is LTE data, which requires a separate diversity antenna in the phone. It’s one of about six antennas (four for cellular, one for GPS, and one for WiFi/Bluetooth). Something there’s not a lot of room for. If the bandwidth for the voice antenna, for instance, can be broadened to make it effective at data as well, then one antenna can be removed.

The lower frequency bands are the most troublesome because they require larger antennas. According to WiSpry, prior to LTE, the total bandwidth range was from 824 to 2170 MHz; their product can extend the lower range down to 700 MHz. LTE’s top end goes to 2700 MHz; their next product will support the entire 700-2700 MHz range.

You can see more on their release

Leave a Reply

featured blogs
Nov 13, 2019
At the third stroke of midnight on 30 September 2019, Australia's talking clock fell silent....
Nov 13, 2019
By Elven Huang – Mentor, A Siemens Business SRAM debugging at advanced nodes is challenging. With pattern matching and similarity checking, Calibre tools enable designers to more quickly and precisely locate SRAM modification errors and determine the correct fix. Static...
Nov 13, 2019
Decisions, Decisions … I may be in the market for a new car in the near future. Unless you'€™ve got a strong preference (and most car buyers DO have a strong preference, IMO), choosing a vehicle is a series of trade-offs.  Fuel efficiency vs. horsepower. Functionali...
Nov 13, 2019
One of the big trends that has been happening somewhat below the radar is the growth of various forms of 3D packaging. I noted this at HOT CHIPS in summer, when a big percentage of the designs were... [[ Click on the title to access the full blog on the Cadence Community sit...
Nov 8, 2019
[From the last episode: we looked at the differences between computing at the edge and in the cloud.] We'€™ve looked at the differences between MCUs and SoCs, but the one major thing that they have in common is that they have a CPU. Now'€¦ anyone can define their own CPU ...