5.2 Active Antenna (OTA) Measurement

In a passive antenna measurement, an antenna is isolated from the active system, which gives us a clean environment to design, debug, and optimize the antenna. The passive measurement is a component level test. As a product, cellular phones are always evaluated by customers as a whole. A customer is not really interested in how well an antenna works. Similarly, cellular phone service providers only evaluate each phone as a whole system. The active antenna test, which is often referred as the Over the Air Performance Testing (OTA Performance Testing), is the system-level chamber test accepted by service providers. OTA tests determine how a specific network will influence the connectivity performance of a mobile handset. The tests reduce the....