POSTER:computer news || RELIABILITY OF ELITE SMARTPHONES ANTENNAS IS POOR
DATE:2013-12-06
According to associates, there have been two major trends in the formation of an antenna inside smartphones. Smartphone Samsung Galaxy Note 3, for example, has a 5-6 antennas: 3G, LTE, Bluetooth, WiFi and something else. Depending on the sales region has to prepare a slightly modified design of antennas for cellular communications. Alone subbands LTE use up to 40 pieces. Obviously, the issue with the antennas should be kept to a maximum of simple operations.
It is reported that currently uses two methods for forming antennas and they both rely on embedding structures in the back cover. One method is more expensive for the initial investment, but gives the opportunity to pay off at the stage of production changeovers. It is called direct laser structuring (laser direct structuring, LDS). The composition is added to a special plastic resin that under the laser beams is converted into a framework to carry out the operation metallization. Necessary configuration array literally drawn on the inside back cover of the smartphone. If earlier changeover lines on a new type of antenna required more than three weeks, using the LDS, it takes 3-4 days. Similar technology has already mastered such case manufacturers as companies Partron, EMW, INTOPS and Woojeon & Handan.
The second method of creating antennas based on a simple stamping when pre-formed antenna is pressed into the case. Now this method is widely used for the production of entry-level devices, because they have problems with a large enough thickness of metal in the antenna design that is not suitable for the creation of Fine corps of top models. However, already developed technologies use for the production of elite stamping machines. The advantages of forming may also include such factors as the safety of the antennas in the product falling and then cracking . With metal nothing would happen, and laser engraved antenna immediately unusable, stripping machine communication capabilities.
Related Products :
xtreview is your : Video card - cpu - memory - Hard drive - power supply unit source
To figure out your best laptops .Welcome to XTreview.com. Here u can find a complete computer hardware guide and laptop rating .More than 500 reviews of modern PC to understand the basic architecture
7600gt review 7600gt is the middle card range.
We already benchmarked this video card and found that ...