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
Sep 25, 2018
AWS (Amazon Web Services) released for general use its FPGA-based EC2 F1 instances in its cloud computing lineup in July, 2017. The EC2 F1 instance is based on Xilinx'€™s 16nm Virtex UltraScale FPGAs and people have been using this cloud-based hardware acceleration capabili...
Sep 25, 2018
Samtec is releasing new digital ECAD models for over 100,000 of its products on SnapEDA, the industry-leading circuit board design library. Traditionally, designers have spent days creating digital ECAD models – such as symbols and footprints – for each component ...
Sep 25, 2018
Robots are a hot topic these days. From helping doctors in the operating room to helping survivors of a natural disaster, it'€™s clear that robots are poised to play an important role......
Sep 25, 2018
CDNLive India took place a few weeks ago and we are just trying to catch our breath! If you missed it, I'm going to be posting two cool videos before the weekend with the highlights. Here are two blogs by the veteran blogger Paul McLellan - one on Asynchronous Design and...