Because Chongguang Communication established the project on the mobile phone project earlier, it began to lay out research and development in April 96, and has completed the preliminary technical pre-research according to the established goals. Hu Yiting also sorted out the relevant technical routes according to his memory as early as possible, and since April last year, he has been successively developing and designing technical solutions for Chongguang mobile phones.

Originally, at the beginning, he planned to be lazy and directly engage in a single-chip solution, after all, before he was reborn, China was already carrying out the research and development of 5G technology, from the technical iteration, GSM mobile phones belong to 2G technology, in Hu Yiting's opinion, there is really no need to design a chip for the five modules step by step.

But at the meeting last year, when he said his thoughts, most of the engineers of Chongguang Communication were cautious about it, thinking that the step was too big, although Hu Yiting had the supreme authority in Chongguang in technology, but the technical project team of Chongguang Communication still thought that Hu Yiting's idea was too advanced after the meeting and demonstration.

Everyone thinks that Chongguang should start with the purchase and assembly of GSM mobile phones at the beginning, and at the same time start to develop five modules with independent intellectual property rights, so as to gradually realize the localization of substitution. In this process, you can also apply for patents for each module you designed, and sell them to various domestic manufacturers who are interested in mobile phone production, so as to gradually establish a solid position in the upstream of the industrial chain.

Considering that the project was established at the same time, there was also the wireless local phone technology of Chongguang Communication, that is, PHS, at this time, it was not conducive to the engineers of the company's internal technical groups to understand the technology, so Hu Yiting finally decided to compromise, not relying on others on the five modules, designing each module chip separately, and finally focusing on the chip to form a highly integrated SOC system-on-chip, only on some components such as capacitors, purchasing better quality imported products.

After nearly a year of collaborative operations with the technical teams of Chongguang Communication, Hu Yiting's design has been completed one after another, and the engineers of Chongguang Communication have also benefited a lot under his remote command, and it can be said that Hu Yiting has personally led them into the design door of mobile communication terminal products. The production department of Chongguang Communication has also recently basically determined the production process and process of mobile phones.

With the successful tape-out of the chips of the five modules from the Lake Research Institute in the 0.8 micron process, the mobile phone of Chongguang Communication has finally reached the final stage.

In the conference room of Chongguang Communication, in the face of the six sample design schemes taken out by Chongguang Communication, Hu Yiting began to have difficulty in choosing.

"Let's talk about it, which one do you like?" Hu Yiting decided to brainstorm.

Zhu Jun said bluntly: "I think Mr. Hu participated in the design of this code-named 01 product should be the first batch of production, 01 machine design is simple, straight board design is very small, because there is no antenna, it looks very avant-garde, smaller and lighter than all the mobile phones on the domestic market, in short, I personally like it very much." ”

Hu Yiting picked up the No. 01 design plan, which was the design he brainlessly copied the shape of the 99 Nokia 3210, and handed over the design to the design department after hand-drawing paper. As the world's first mobile phone with a built-in antenna, the 3210 is Nokia's most popular model that has sold 160 million units worldwide. The design adopts an all-plastic shell, and the front and rear plastic panels can be removed directly by hand without the help of tools, providing a design guarantee for replacing the color shell. You must know that in the future, Nokia, which is not enterprising, will be jokingly called a company that regards shell change as an innovative company, and it will not be able to keep up with the development of smart phones. But it also confirms from the side how huge the business demand of mobile phone users, especially young people, for personalized and differentiated mobile phones.

Lin Yun: "I also agree with Zhu Jun's opinion, thanks to our highly integrated five-module chip SOC solution, and built-in microstrip patch antenna technology, we Chongguang can come up with this global original design, according to our Chongguang sales departments in overseas countries to get back dozens of mobile phone promotional materials, we are probably already the world's smallest mobile phone manufacturers." ”

Lin Yun's face was red after speaking, and her pride was overflowing, "I know that everyone has heard some words many times, but I still want to express my admiration for Mr. Hu here again, if Mr. Hu didn't come up with a variety of built-in antenna solutions like a genius, then our Chongguang mobile phone can only be equipped with a whip antenna like other brands on the market." ”

Everyone agreed, Du Shumin, the technical director of the mobile phone division, is a doctor of communication engineering that Lin Yun dug from Tsinghua last year, and said at this moment: "I think our built-in antenna design will definitely become the mainstream choice of most mobile phones in the market in the future." Mr. Hu's antenna design scheme is amazing, each one is very perfect, whether it is a built-in microstrip patch antenna, or a face-to-face inverted F antenna, or a double-side-placed face-to-face inverted F antenna, each scheme and technical principle are original.

Although the internal antenna is about 15% weaker in the lab than the traditional external stretchable whip antenna, or Motorola's new thumb-sized mini antenna with a built-in helical coil with a short whip antenna in the middle. However, after combining a number of comprehensive improvement technologies created by Mr. Hu, the signal will not be weaker than that of mobile phones using external antennas in actual use.

In particular, the baseband chip designed by Mr. Hu has very low power consumption and strong performance, and can also carry out multi-sampling analysis of the reflected waves of urban buildings at the same time, which is equivalent to improving the radiation efficiency and effective gain, which makes our mobile phones have a great improvement in the instantaneous signal-to-noise ratio and average signal-to-noise ratio, and greatly reduces the risk of communication interruption caused by signal attenuation. At present, through the test of the prototype, we are not worse than the mobile phone with external antenna in various signal parameters, and there is no obvious difference in use.

At present, according to our estimates, Chongguang's technology on three new built-in antennas alone can apply for more than 70 patents! After the launch of our mobile phone, our built-in antenna design and production business may also become a new profit growth point for Chongguang Communication in the future. ”

Zhu Jun praised: "Needless to say, the chip development of the five modules of baseband chips, power amplifier chips, radio frequency chips, power management chips, and liquid crystal display control chips, almost all of them were done by Mr. Hu by himself. ”

Hu Yiting's scalp was itchy when he was praised, so he had to touch his head and said: "Now that I see the product come out, I am really in a good mood, but I am not very satisfied with this five-chip discrete design scheme, and I should integrate it again in the future." I always think that GSM mobile phone is a backward technology, and the single-chip solution can be solved very maturely. However, under the current 0.8 micron process, the designed chip area will be relatively large, and there may be trouble in improving the yield rate. But that's the way to go, and that's always going to happen.

Then again, since everyone likes the No. 01 design so much, let's make it the first model to go into production.

But what about the other five designs, which one do you think can follow up? After all, we can't rely on just one product to win the world. The design of No. 01 is very lightweight, with a fashionable sense of sport, I think it should be positioned in the low-end, targeting young consumer groups, and it is necessary to launch a variety of colors and materials after the listing, so as to provide users with a variety of fashion choices. ”

Du Shumin licked her lips: "Indeed, as Mr. Hu said, the products should be distinguished from the high, medium and low-end, especially our Chongguang technology is so strong, and we are fully capable of providing high-end products for the market, after all, commercial products are very profitable."

However, I think, from the current domestic situation, mobile phones are simply luxury, users are almost all business users, the cheapest imported models are also 4900 wholesale price, many cities buy mobile phones and even have to earn network fees, some small cities only need 1,000 yuan or even engage in free activities, and some areas like Beidu actually charge 5000, Tianjing charges 2800, such an expensive entry fee, how can ordinary people have the money to buy a mobile phone?

And the design of our 01 machine, in terms of production cost, is actually the lowest. I think it's okay to do it all, high, medium and low-end. Personally, I think that the high-end model can be launched a year or two later. ”

Zhu Jun frowned and said: "I don't quite agree with this view, we Chongguang has always had a glorious tradition of exporting, since we have made such a big technological breakthrough in mobile phones, it is always necessary to export to earn foreign exchange, if there is no high-end model for export, the profit will not go up." ”

Lin Yun also said: "Product segmentation is imperative, two years late is definitely not good, I think it is too late a year, I think it will be launched half a year later at most." ”

Hu Yiting nodded: "Then half a year, the 01 machine will be produced for half a year, and a lot of lessons can be summarized, and the second model will be launched at that time." ”

Seeing that Hu Yiting finally agreed with Lin Yun's opinion, everyone in the conference room nodded in agreement.

Du Shumin immediately obeyed everyone's decision and asked, "Then Mr. Hu, you see, which one should you choose for high-end design?"

Hu Yiting stared at the design from No. 02 to No. 06 and began to make difficulties.