Texas Instruments TRF1500 - Manual (Page 47)

SWRA004A
48 TRF1500 Integrated Dual-Band RF Receiver User’s Guide
RF P
in
P
out
Gain
-35 -10 25
-34 -9 25
-33 -8 25
-32 -7 25
-31 -6 25
-30 -5 25
-29 -4 25
-28 -3 25
-27 -2 25
-26 -1.2 24.8
-25 -0.4 24.6
-24 0.4 24.4
-23 1.2 24.2
-22 2.2 24.2
-21 3.0 24.0
←
1dB Compression Point
-20 3.0 23.0
High-Band Cascaded: 2X2 Spur Performance
Control state: 111001
SEE APPENDIX A: TEST BENCH SETUPS
Test setup Figure 20
2X2 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 (F
RF
) 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; F
IF
4) Connect the EVM IF output port, J21, to the spectrum
analyzer.
5) Measure the output power (1 P
out
) at the IF frequency.
6) Set the RF source Frequency to (F
RF
+ ½ F
IF
) and P
in
to -
50dBm.
7) Measure the output power (2 P
out
) at the IF frequency.