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Under-Display 5G Antennas Could Improve mmWave Performance

Antenna on Display AoD tech
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Right now, 5G is the hottest thing in the mobile tech space. According to Cision, a Korean tech firm just developed a technology that should ostensibly bring an overall improvements to mmWave 5G reception. They developed Antenna on Display.

Antenna on Display is a transparent mmWave antenna that sits just under the display

With under-display fingerprint scanners and under-display cameras, companies are testing the limits of what tech they can pack just under smartphone screens. Now, Dongwoo Fine-Chem has developed an mmWave 5G antenna that will sit just under the display. It will be transparent so as not to disrupt the content being viewed.

Usually, the singal antennas are positioned on the back of the phone or near the edges. This is to help them pick up more of the signal. The only issue is the fact that those parts of the phone are typically covered by the hand. Dongwoo said that placing the antenna under the display means that people are less likely to cover them.

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Antenna on Display technology is still in the very early stages of development. It hasn’t been used on any devices, but the company plans on showcasing it during MWC later in the summer.

What is mmWave 5G, and why is it so sought after?

Like any signal technology, there are different bands to 5G. The Antenna on Display technology will be able to pick up n257, n258, and n260 mmWave bands. Even though 5G is faster than 4G LTE, there’s a spectrum. On the higher end of that spectrum is mmWave 5G.

The “mm” in mmWave 5G means that the wavelength of the signal is so short, it’s on the scale of millimeters. In order to get to this scale, you will need signals that are at least 30GHz. To put that into perspective, typical 5G has signals that average between 2.4GHz and 4 GHz. T-Mobile’s mmWave 5G is said to deliver speeds between 300 Mb/s and 1Gb/s.

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mmWave 5G is the blazing fast 5G that people talk about all the time. It’s also the really spotty and difficult 5G that can cut out if you move just a foot away. What it has in speed, it lacks in reliability. mmWave 5G antennas can’t transmit a signal too far from the source because of signal propagation. This is why mmWave signal towers are restricted to densely populated downtown areas.

The carriers have their own names given to their own flavors of mmWave 5G. Verizon’s is called 5G Ultra wideband. For AT&T, it’s called 5G+, and T-Mobile’s is called 5G Ultra Capacity. The jury is out on whether Antenna on Display will help users be able to capitalize on these companies’ signals.