Texas Instruments TRF1500 - Manual (Page 29)

SWRA004A
30 TRF1500 Integrated Dual-Band RF Receiver User’s Guide
Low-Band Cascaded: RF Input Return Loss
Control state: 011000
The input return loss of the low band receiver is measured at the
EVM low band RF input port, J10. The measurement is
performed using a network analyzer.
Set up the network analyzer as follows to measure the RF input
return loss:
1) Set the network analyzer to measure the low band RF
frequency (see Table 3).
2) Set the power range to -35 dBm through -20 dBm, and then
set the input power to -30 dBm.
3) Perform a full one-port calibration on port 1 of the network
analyzer.
4) Set the network analyzer to measure S11.
5) Connect the EVM RF input, J10, to port 1 of the network
analyzer.
6) Measure the RF input return loss.
Low-Band Cascaded: LO Input Return Loss
Control state: 011000
The cascaded LO input return loss of the Low Band is measured
at the EVM low band LO input port, J12. The measurement is
performed using a network analyzer.
1) Set the network analyzer to measure the low band LO
frequency (see Table 3).
2) Set the power range to -35 dBm through -20 dBm, and then
set the input power to -30 dBm.
3) Perform a full one-port calibration on port 1 of the network
analyzer.
4) Set the network analyzer to measure S11.
5) Connect the EVM LO input port, J12, to port 1 of the network
analyzer.
6) Measure the LO input return loss.