Texas Instruments TRF1500 manual Low-BandCascaded RF Input Return Loss

SWRA004A

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.

30 TRF1500 Integrated Dual-Band RF Receiver User’s Guide