Texas Instruments TRF1500 manual High Band 3X3 Spur Performance

SWRA004A

8)Calculate 2 X 2 spur performance as 2 X 2 spur performance

= 1 Pout - 2 Pout.

High Band: 3X3 Spur Performance

Control state: 111001

SEE APPENDIX A: TEST BENCH SETUPS

Test setup Figure 20

3X3 Spur Performance is measured at IF output port J21. The measurement is performed using two sources and a spectrum analyzer.

1)Set the RF source frequency (FRF) and input power (see Table 4). Connect the RF source to the EVM RF input port, J20.

2)Set the LO source frequency and input power (see Table 4). Connect the LO source to the EVM LO input port, J12.

3)Set the spectrum analyzer to measure the output power at the IF frequency; FIF.

4)Connect the EVM IF output port, J21, to the spectrum analyzer.

5)Measure the output power (1 Pout) at the IF frequency.

6)Set the RF source Frequency to (FRF + 2/3 FIF) and the source power to -50dBm.

7)Measure the output power (2 Pout) at the IF frequency.

8)Calculate 3 x 3 spur performance as:

3 x 3 spur performance = 1 Pout - 2 Pout.

TRF1500 Integrated Dual-Band RF Receiver User’s Guide 49