Qual é uma maneira prática de medir o desempenho da antena em dispositivos de comunicação móvel?

Practical methods for measuring mobile antenna performance: TRP (Total Radiated Power): Assesses total power radiated during transmission. TIS (Total Isotropic Sensitivity): Measures total power received. Antenna Efficiency: Gauges efficiency in converting power to waves. Return Loss: Measures reflected power. VSWR (Voltage Standing Wave Ratio): Evaluates impedance matching. Radiation Pattern Analysis: Examines energy radiated in different directions. Diversity Performance: Assesses diversity gain and branch correlation. Real-world Testing: Field tests in diverse environments. Ensure compliance with FCC, ETSI, and industry standards.

BER (Bit Error Rate) - systems have the capability of operating effectively at different signal levels and system receivers can operate at -130 or -67, so it is all about how many accurate bits you can get from Tx to Rx AND back to the original Tx. Turning up the output power of base station does nothing if the handset can't communicate back to the base station.

1. Field Test Signal Strength: Use readily available network signal strength indicators on your device in varied locations. Simple, and immediate, but limited to local network coverage, and doesn't tell you about antenna pattern. 2. Simulate Signal Reception: Utilize apps or network tools to monitor signal strength and data throughput under controlled signal simulations. Offers more control and insight than field tests, but still doesn't provide a full antenna performance picture. 3. Anechoic Chamber Analysis: Employ specialized testing chambers to assess radiation pattern, total radiated power, and antenna gain in different directions. Most accurate and comprehensive method, but requires specialized equipment and expertise.

TRP is only measured at the transmit antenna. One thing to consider on a communications link is the distant end reciever. Effective Isotropic Radiated Power is a measurement of the power necessary to provide the same source signal level as the distant end.

These are some tips that help out VSWR as well. Either the Freuqnecy, equipment, or antenna need alteration. Environmental affects are also a consideration. Power lines and generators can cause noise affecting some radio frequency emissions.

Voltage Standing Wave Ratio or VSWR is another good way to assess antenna performance. It does assess everything from the Radio to the antenna, but gives a good indication whether an antenna is effective for the intended frequency. A perfect ratio is 1:1 and usually is hard to achieve.