In the 5G era, it will achieve 10 times faster than 4G? This will mention the millimeter wave.
Millimeter waves, electromagnetic waves with wavelengths on the order of millimeters, have frequencies between about 30 GHz and 300 GHz. As the main frequency band for 5G development, millimeter-wave has a large gap between international and high-integrity, low-power devices in terms of current product technology; at the same time, domestic millimeter-wave devices have a relatively low market share in the global market. This raises the question of whether millimeter-wave devices will become a shortcoming in the domestic 5G development. There are cautious optimists and worries.
Whether Millimeter-Wave Devices Will Become Worried About 5G Short Boards
"There are still short-circuits in domestic millimeter-wave devices," said Zhu Lihong, an expert in the National High-tech Consultation Expert Group on Nuclear Technology.
As witnesses and witnesses of the development of 2G, 3G and 4G in China, a group of experts and scholars represented by Zhu Lihong and others mentioned that there is a consensus in the 5G development that millimeter waves are the main frequency band for the development of 5G communications. However, in a millimeter wave band, the bandwidth of each frequency point is not necessarily the same, which determines that in the entire millimeter wave device production process, the future industrialization process must be fully covered and fully supported.
Zhu Lihong introduced that the process of making millimeter-wave devices is very complicated. “From the current technology level of the product, it should be said that the gap between us and foreign countries is not particularly large, especially when it comes to the part of the millimeter-wave monolithic circuit, there are many special needs in the country, so the previous technical investment and capacity investment There is still a good foundation, but on the other hand, the integration of the front-end in the technical level is the most highly-integrated and low-power device for communication, and there is a large gap in terms of technical level.
"The biggest difference is the market share," said Zhu Lihong.
It is understood that 5G has just begun and various users have begun to use some devices, but the domestic market share of millimeter-wave devices is relatively low, especially in the RF front-end part.
"The development of 5G requires cross-border integration, and it can really put some 5G technologies, especially in the high-frequency bands, into practical use," said Professor You Xiaohu of Southeast University from a technical point of view. Specifically to the millimeter wave, You Xiaohu pointed out that "In the 5G era, it is necessary to consider and cooperate with devices from the very beginning, and to cooperate with the process. For example, you don't have the support of this process, and there is no way to put millimeter waves. The antenna is packaged on the wall or on the chip, which is a very important process. Without the support of this process, there is no way to make a test system and a demonstration system."
In terms of the above popular terms, that is, we have to integrate many things in the era of 5G. To integrate these things is not enough for us to make separate chips for millimeter-wave devices, such as ana- lyzers, amplifiers and so on. These are us. Do a good job of supporting the front end. Another aspect that requires higher is the terminal. Because of the higher requirements for the size and power consumption of the terminal, how to integrate the integrated modules and highly integrated SOCs is an important challenge in millimeter-wave devices.
Industrialization of millimeter wave devices is a long way to go
Will technology and market constraints make millimeter-wave devices a short board for 5G? In this regard, as a very microscopic but indispensable part of the entire 5G industry chain, manufacturers of millimeter wave components have the most say.
"Whether the millimeter-wave device will become a short board of 5G, from the enterprise's point of view, I am cautiously optimistic about this issue, but still optimistic about the situation," said Lin Zhidong, deputy general manager of Xiamen Sanan IC Co., Ltd. Optimism comes from the production of raw materials in the upstream and has the ability to confidently support the industrialization of the future 5G millimeter wave, and can provide a cost-effective component. The prudence comes from how advanced technologies can be applied to prototypes after they have been used.
It is understood that at present domestic millimeter wave applications have achieved breakthroughs from the point of view of the process, and the future will focus on how to ensure the cost-effectiveness of devices with large-scale and batch-oriented and high-yield rates. This is the concern of practitioners and the implementation of millimeter-wave devices. The key to industrialization.
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