18 Getting Started Guide
Quick Start
Purpose and Function
Purpose and Function
The M1749B Performance mmW Transceiver is designed to be used as the
millimeter-wave interface between a wireless test system and a
millimeter-wave Device Under Test. The M1749B upconverts the test system’s
Tx output to the higher range of the DUT, and downconverts the received signal
from the DUT to the lower range of the test system’s Rx input.
The DUT-facing ports of the M1749B (
RF Tx/Rx 1
and
RF Tx/Rx 2
) are
half-duplex ports -- that is, either port can transmit or receive (although never
both at once).
Figure 2-1
M1749B used as an RF/mmWave interface
On the left side of the M1749B in the diagram, the
Tx IF In
port takes an input
from the test system and upconverts it to the higher range of the DUT. Signals
received from the DUT are downconverted and returned to the test system
from the
Rx IF Out
port. In upconverting and downconverting, the M1749B