Texas Instruments TRF1500 manual High-BandCascaded Power Leakage LO In to RF In

SWRA004A

High-Band Cascaded: Power Leakage LO In to RF In

Control state: 111001

SEE APPENDIX A: TEST BENCH SETUPS

Test setup Figure 23

The LO leakage at the RF port is measured at the low band RF input port J20. Power leakage is a measure of power in dBm that couples to the RF port. The measurement is performed using a RF source and a spectrum analyzer.

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

2)Set the spectrum analyzer to measure at the LO frequency (see Table 4).

3)Connect the RF Port, J20, to the spectrum analyzer.

4)Measure the LO leakage power.

High-Band Cascaded: Third Order Input Intercept Point (IIP3)

Control state: 111001

SEE APPENDIX A: TEST BENCH SETUPS

Test setup Figure 21

The third order input intercept point is the level of the RF input power at which the output power levels of the undesired intermodulation products and the desired IF products are equal. The measurement is performed using three RF sources and a spectrum analyzer.

1)Set the first RF source input power (RF Pin) and frequency (F1) (see Table 4).

2)Set the second RF source frequency to the first RF frequency plus 120kHz; F2.

3)Using a RF combiner, connect the RF sources to the EVM RF input port, J20.

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

5)Set the spectrum analyzer to measure at the IF frequency (FIF) (see Table 4).

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