Material and technical analysis of mobile phone built-in antenna
Dongguan Jinfeng Electronics Co., Ltd. is a production spinDisplay shaft Laptop reel Hardware shaftProfessional enterprises, customers include major mobile phone accessories wholesalers, electronics factories, electrical appliances factories, plastic factories, notebook computer production plants, hardware factories, lighting factories and so on. Mobile phone：137 2449 6370；shop with thriving businesshttps://sjkpf88.1688.comOfficial websitehttp://www.ejf.com.cn/
The built-in antenna material is other materials such as beryllium copper and stainless steel, and the specific support depends on the structure. Beryllium copper (gold plating outside)
AntennaRF The performance is better, but the price is slightly higher than the stainless steel material.
The performance of the built-in antenna is stricter on the structure. The basic requirements are as follows, otherwise the antenna performance will be greatly affected.
，The degree of impact depends on the type of antenna.
Generally considered,PIFA The antenna is bulky and has good performance; the slider must be designed using this antenna. specific
Requirements are as follows:
1. The height of the PIFA should be no less than 6.5mm;
2. The LCM connector should be placed on the keyboard side of the motherboard;
3. The width of the antenna should be no less than 20mm;
4. The impedance of the lead from the RF test port to the antenna feed point is maintained at 50 ohms;
5. Devices near the PIFA antenna should be shielded as much as possible;
6. The pad of the feed point should be no less than 2mm*3mm;
7. The feed pad (pad) should be top *side;
8. If the test socket layout is difficult, it can also be placed in the antenna area;
9. Some positioning holes can be opened in the antenna area.
10. There are no large metal objects such as motors, SPEAKER, RECEIVER, etc. within seven millimeters around the built-in antenna.
MONOPOLAR antennas are slightly smaller and have poorer performance and are generally not recommended. Specific requirements are as follows:
1. There are no large metal objects such as motors, SPEAKER, RECEIVER, etc. within seven millimeters around the built-in antenna.
2. The width of the antenna should be no less than 15m;
3. Do not spray conductive materials such as conductive paint on the structural parts (face) near the built-in antenna.
4. Do not do electroplating near the antenna area of the mobile phone and avoid designing metal decorative parts.
5. There should be no overlap with the FPC on the top and bottom of the built-in antenna, and the distance between the edges is more than seven millimeters.
6. Built-in antenna and mobile phone battery
Jinfeng Electronics undertakes various types of notebook antennas and tablet antennas、Cell phone antenna、GPS antenna processing
中文版
English
Group Overview
