Cellular Rf Technical Description; Rf Block; Qubbe - Nokia RM-609 Service Manual

RM-609
System Module
Figure 63 AV connector
The AVVideoControl signal handles microphone usage of the AV connector. The plug detection signal handles
the AV connector plug detection with HeadDet signal from EM ASIC.

Cellular RF technical description

RF block

Linko RF consists of the following key components:
• Älli (Transceiver RF Asic)
• Aura (RF power management Asic)
• Ukko PA
• QuBBE (Front end module)
Figure 64 Linko RF block diagram
The RF block uses RF ASIC N7512 that performs the RF back-end functions of receive and transmit function of
the cellular transceiver.

QuBBE

The front end module called QuBBE contains the needed front end filters and the switches. QuBBE contains:
• 3 duplexers (Band II, V, VIII)
• 1 triplexer (Band I, IV)
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