Motorola i897 - Receiver Path Section

OVERVIEW: Receiver Path Section
1.8 Receiver Path Section
The receiver is a direct conversion receiver. It operates in the commercial portion of the
land-mobile receiver band (851-870MHz and 935-940). The receiver takes an incoming
RF signal, down-converts it to baseband where it is then amplified, filtered, digitized and
then provided to the DSP MODEM. The receiver has, automatic gain control (AGC) to
maintain good linearity over a wide range of incoming signals.
The receiver has automatic gain control (AGC) to maintain good linearity over a wide
range of incoming signals. The AGC circuitry also prevents clipping of high-level signals.
Janus block, which is a receiver circuitry path for TAOS (See i897 Block Diagram Figure
1-14
Below).
Figure 1-14. i897 Block Diagram
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