Specifications

AirPrime Embedded Module Hardware Integration Guide
46 Proprietary and Confidential 2130114
Sensitivity test results—MC57xx
Figure 3-3 shows typical test results for the US PCS band for both conducted and
over-the-air connections. The conducted (or "connectorized") measurements
were made using an RF coaxial cable connection. The over-the-air
measurements were made using both an external antenna and a typical device
antenna.
Figure 3-3: US PCS sensitivity measurements
In this test, the external antenna performed best—the expected result if a high
efficiency antenna with some gain is used. The internal antenna has less gain
than the external antenna, so the internal antenna's performance is offset above
the external antenna. The antenna gain must be known to determine whether the
offset is strictly the result of antenna gain or if broadband desense is present.
Narrowband desense can be seen at channels 325, 625, and 925.