Application - Rohde & Schwarz R&S ZN-Z15 Manual Del Usuario

®
R&S ZN-Z15
4

Application

Today's mobile radio standards are becoming more and more complex and cover
an increasingly growing range of functions. This is also reflected by the frontend
modules (FEMs) used in smartphones, where the number of integrated compo-
nents, such as low-noise amplifiers and filters, is on the rise. This diversity also
has an impact on T&M equipment, leading to an increase in the number and
types of RF measurements required and in the number of ports to be analyzed.
FEMs with 16, 20, 23 or more ports are now typical.
A standardized interface is a key requirement for FEMs in order to ensure intero-
perability with other components in a mobile phone. For example, other mobile
phone components must be able to address the frequency selection filters in a
frontend module in order to utilize the more than 12 mobile radio bands plus sup-
plemental services such as WLAN and GPS. A working group within the MIPI
Alliance developed the MIPI
external RFFE interface R&S ZN-Z15 supports this interface.
®
MIPI Alliance
The MIPI ®
ber of companies working together with the objective of defining interface
standards for the components used in mobile phones. The MIPI
views its role as supplemental to existing organizations, such as 3GPP.
Often, settings on the DUT, e.g. the position of an internal switch, must be
changed. To handle these tasks, the external RFFE interface R&S ZN-Z15 is
equipped with two types of interfaces: ten independent general purpose input out-
put (GPIO) interfaces and two RFFE interfaces. This makes it possible to pro-
gram MIPI® RFFE interfaces and GPIO pins directly from the analyzer firmware.
User Manual 1177.5479.02 ─ 02
®
RF frontend (RFFE) interface for this purpose. The
Alliance is a global, nonprofit organization comprised of a num-
Application
®
®
Alliance
19