U2796B Datasheet, PDF (7/11 Pages) TEMIC Semiconductors – 2-GHz Single Balanced Mixer

U2796B
LOi
C1
LO
generator
R _i= 50 W
8765
IFO
N
Cr
U2796B
Noise
figure
meter
Noise
source
12
C2
IFO
34
C3
RFi
RIP3
C4
VS
Figure 9. Test circuit-noise figure
93 7763 e
Note:
1.
u ^{The noise floor of the LO generator might influence the noise figure test result. In order to avoid this,}
either a band pass or a high pass filter with fc f_IF should be implemented.
2. If IF output network does not provide sufficient suppression of the LO component, a low pass filter
should be inserted to avoid overdriving the noise figure meter.
3. For best noise performance 0 dBm LO power level is required.
Rev. A2, 15-Oct-98
7 (11)
Preliminary Information