As the name implies, the built-in antenna of a mobile phone is a device part used to receive signals, which is built into a popular smart phone on the market. Its materials include FPC, mobile phone laser antenna, and metal shell as antenna radiator.

1. FPC refers to flexible circuit board. The antenna inside the mobile phone is designed, made of FPC, pasted on the inner side of the mobile phone case, and connected with other parts by brackets and thimbles.

2. What is the mobile phone laser antenna? Here we will mention LDS antenna technology, whose full name is laser direct forming technology. Du Niang's explanation is: use a computer to control the movement of the laser according to the path of the conductive graph, project the laser onto the molded three-dimensional plastic device, activate the circuit pattern in a few seconds, which can be generally achieved with a laser laser.

In brief, on the molded plastic support, the laser laser technology is used to directly chemical plating on the support to form a metal antenna pattern. Such a technology can directly laser the antenna on the mobile phone shell.

3. The term "metal shell antenna" may not be so professional, but once I said it, you got it. Apple's iPhone 4 was exposed to the "antenna gate" event just after its launch. This phone uses a border antenna design. When users hold the iPhone 4 tightly, the signal of its mobile network will completely decay to the level of no call in a few minutes.

The current technology can set breakpoints on the metal frame antenna, which can minimize the impact of the handset on the signal. Antenna dry goods

（2） Past and present life of metal shell antenna

Let's talk about the radiation from mobile phones. The radiation from mobile phones is non ionizing radiation, which will not cause cancer. The amount of radiation from mobile phones depends on mobile phones. Some mobile phones have a large amount of radiation, while others have a small amount of radiation.