Advertisement
2.2 iPA 1900 MHz System Components
The iPA is only used when the iCell is installed in a 19" rack-mounted configuration. The
iPA is a single sector bi-directional amplifier that incorporates:
A high power amplifier (HPA)
Two low noise amplifiers (LNA) for receive diversity, frequency
conversion and selectivity capabilities (for each sector).
On the receive side, the iPA down-converts the PCS band (1900MHz) incoming signals of
each sector to a fixed IF for signal enhancement, then up-converts them to Cellular band
(800 MHz) which are then output to the Pico cell receive paths. On the transmit side, the
iPA takes the Cellular band transmit signal of each sector from the Pico BTS transmit path,
down-converts to a fixed IF for signal enhancement, then up-converts to PCS band for
transmission.
Figure 2-2: iCell 800 MHz Pico BTS interfaced to Translating iPA 1900 MHz (3 sector
Case shown using 3 iPAs)
MovingMedia 2000 iCell Macro with iPA Installation Guide
Page 8 of 14
Advertisement
