Cell phone signal enhancement tool - double small line

Wireless Circuit: This wireless transmitter has been connected to three directional antennas, a device that displays radio signals directed to the cell tower, thereby saving the phone's energy usage.

Your current mobile phone antenna receives signals from all directions. "Only a fraction of the energy actually reaches the base station," Zhong Lin said, and his research team is dedicated to making computing devices more efficient. This not only wastes the battery life of the phone, he said, but it also causes unnecessary interference with other users.

It is more efficient for the antenna to broadcast energy in a narrower frequency band. The mobile communication tower adopts this strategy and uses several antennas pointing in different directions to better serve the users. Zhong Lin’s research team has developed a prototype of an antenna system that allows the handset itself to perform this function, saving energy and extending battery life.

The researchers connected a small WiFi transmitter to three low-cost directional antennas facing different directions, and a standard omni-directional antenna. At any time, only one of the four antennas is working. The directional antenna is used to send data to the base station and the omni-directional antenna is used to receive signals.

The entire system is mounted on a rotating mobile platform to test its most important features: when the equipment rotates and changes direction, it can maintain the connection (by constantly switching between the antennas of each aligned base station). The directional antenna determines which antenna should send the next data packet by monitoring the quality of the data packet received from the base station.

At present, the prototype is using WiFi frequency, because the ready-made WiFi directional antenna is very easy to get. However, the results apply to any frequency, Zhong Lin said. His team is testing a Nexus One phone running multiple Android operating systems connected to multiple antennas and is also conducting computer simulation tests. So far, the result is support for WiFi version testing, he said.

All the results show that using two antennas on a mobile phone will result in significant savings, Zhong Lin said. "One on the back and one on the front, you can get twice the signal strength of a conventional antenna at the mobile network margin and save half the energy in the center of the network."

Multiple antennas also make it possible to prevent users from affecting the signal due to handheld gestures, which were well-known in the wake of Apple's iPhone 4 release, Weber said. "For example, if you have dual antennas and use them wisely, you may be able to prevent this problem. When you change the grip, the antenna can switch automatically," he said.

However, another reason why the Apple iPhone is called the "antenna door" is: Limits on the space and design of smart phones, Weber added. Popular mobile phones like the Motorola Droid X and the HTC Evo show that larger smartphones are becoming more and more popular with designers, Weber said. "But have they set aside more space for antennas? No."