5G phone will start to appear in the coming months. But the 5G phone supports the band is very fragmented, from 600MHz to 28GHz have; whether Furthermore, in the first device in the upcoming support of millimeter wave (mmWave) 5G band phone has been in place?
Engineers are racing to launch the first smartphone to support 5G network, mainly for the following 6GHz (sub 6GHz) frequency band. However, as to whether there may be some support for the first device in the millimeter-wave (millimeter-wave; mmWave) band mobile phone in place, the industry radio frequency (RF) experts divergent views.
5G parties agree that these phones are faced with a band fragmentation of the market - the various operators supported frequency range from 600MHz to 28GHz have, which also retains some of its spectrum plan details. Therefore, to optimize for the new phone 5G areas, it may take several years.
5G band phone fragmentation
Compared to last year's LTE mobile phone models, the first generation of 5G phone may be launched for a specific area of larger size or a shorter battery life of the device. Its price is likely to increase only slightly, but maintains the RF front-end components is estimated to be only 10-30% increase in the list of materials (BoM) matching range.
Although faced with similar problems of transition to LTE, but did not reach such a scale as 5G, because this is the first cellular standard and above 28GHz band. In addition, although many countries will support the plan 5G bandwidth of 100MHz in the 3.5GHz band, 3.5GHz band fastest but the US until next year before the line, but the United States is expected to adopt a smaller spectral bandwidth.
In the United States, due to the lack of new spectrum can be used to 5G, T-Mobile will launch the 600MHz band network, while Sprint will use 2.5GHz. A representative of Verizon is confirmed that the company will import the mmWave frequency band for smart phones next year.
The speed and breadth of these changes will be positive design smart phone technology to new heights.
Broadcom (Broadcom) wireless semiconductor division chief technical strategist William Mueller said: "Everyone wants to lead 5G, so competing in the standard of 'digital' was settled before the hardware design, this really feel the whole headache ...... , the 2019 may be expedient to take to see some low integration phones. "
Qorvo technical marketing director Ben Thomas pointed out, the problem is that operators eager to recover from 5G spectrum efficiency standards. He said, "OEM facing much bigger than when using LTE pressure," he recalls Samsung (Samsung) How to launch additional battery for its first LTE phone.
Divergent views on the progress mmWave phone
New York University (New York University), Professor and Senior Fellow Ted Rappaport most promising wireless millimeter-wave mobile phone. "I expect this Christmas will see a number of vendors to launch mobile phone," he pointed out Intel (Intel) and Qualcomm (Qualcomm) in the event held in April this year, already reported on the progress of the technology.
Rappaport describes research conducted over the years he and his colleagues at New York University Wireless Center (NYU Wireless Center) he founded. He added that the use of more antennas in a confined space can provide more gain to compensate for the path loss; and it brings higher data rates can make up for higher power consumption.
He said, millimeter wave technology "is facing many challenges, but also requires a lot of expertise. It is currently catching up, but time still take several years to achieve ...... past 10 years we have been using WiGig, but few people use the same. "
Challenges include millimeter wave create for new filters, power amplifiers and phase shifters, and a combination of signals from a plurality of antennas to form a directional beam and directed. In addition, Chris Barratt wireless module CTO Insight SiP design company, mobile phone antenna needs to be placed in a position away from the metal circuit board, and hinder signal processing.
Compared to a similar phone sub 6GHz bands, Barratt said, "the high frequency band is a different kind of race ... I think it will eventually achieve, but at least a few years time." Barratt have been involved in a number of design 60GHz .
Qualcomm announced that solve the problem of mobile phone module in July this year, it is now a kind for 20 ~ 40GHz network. One analyst predicted that these modules will help China's emerging mobile phone manufacturers rush to launch products before Apple (Apple), Samsung (Samsung) and Huawei Technologies (Huawei) and other companies.
RF rival Broadcom, Qorvo and Skyworks also have expressed skepticism. But three sub 6GHz RF chip supplier currently not planning mmWave product roadmap. Meanwhile, startups Movandi said the company is trying to develop its mmWave technology for base station to the mobile space.
Chris Pearson operators and their suppliers trade group 5G Americas president is taking a middle ground. He said: "The new frequency is always present challenges, but these are innovative companies, both before and added a new band."
Long and winding road map
Given the challenges of technology, business and time to market, Qorvo of Thomas, said: "We want to see the real in 2021 after only optimized 5G flagship phone, but in order 5G mobile phone will also appear after that ...... RF design the complexity of the aspects will take time for many years to overcome. "
Scattered bands for different regions of tailored design "component utilization means the phone is reduced," he said: "When the designer In response to the increased chip content of the basic adaptation," will cause problems.
Eventually, "we will be looking to see quite a dramatic change in the RF front-end." He predicted more antenna tuning appears in almost doubling the frequency range.
Thomas is also expected there will be more level of higher quality filter. Further, the multiplexer switches substituted simpler, more complex to support carrier aggregation (CA) scheme. He said: "We have seen up to six combinations of bands and simultaneous use."
When the dust settles is expected in 2021, the new standard RF module may appear in the 3.5GHz frequency band and other areas. Qorvo have exchanged views against the module with partners and competitors (including Skyworks).
Broadcom's representation Mueller, 5G design may evolve into two modules. He said, this separation design module will support antenna diversity and to mitigate the non-independent (non-SA) architecture and interference from LTE 5G synchronous transmission.
"The most difficult part is the power efficiency," Rappaport says New York University. "It also requires several generations of design evolution, we need to find in the mmWave frequency band technique."
Finally, no doubt, 5G phones will begin to appear in the coming months. For example, Sprint has announced that LG Electronics (LG Electronics) will provide 5G smartphones before June next year. However, whether you can use these phones mmWave frequency and how they upgrade their RF design remains to be seen.
Original Address: https: //www.eeboard.com/news/5g-181/
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