3
2: RETN LOSS (B) 10.0 dB/DIV OFFSET 0.0 dB
1: OFF
Model: 54147A
CURSOR
2: -33.87 dB
96.8064 GHz
Average: 16
START: 85.0000 GHz USER STOP: 110.000 GHz
5 GHz/DIV
401pts
LEVEL: +7.0 dBm
2
2: OFF
1: TRANSMSSN (A) 10.0 dB/DIV OFFSET 0.0 dB
Model: 54147A
CURSOR
2: -60.87 dB
85.5832 GHz
Average: 16
START: 85.0000 GHz USER STOP: 110.000 GHz
5 GHz/DIV
401pts
LEVEL: +7.0 dBm
READOUT
1: -59.91 dBr
9.1946 GHz
1
2: OFF
1: TRANSMSSN (A) 10.0 dB/DIV OFFSET 0.0 dB
Model: 54147A
CURSOR
1: -60.52 dB
109.658 GHz
Average: 16
START: 90.0000 GHz USER STOP: 110.000 GHz
5 GHz/DIV
401pts
LEVEL: +7.0 dBm
READOUT
1: -59.21 dBr
18.4433 GHz
1
2: RETN LOSS (B) 5.0 dB/DIV OFFSET 0.0 dB
1: TRANSMSSN (A) 10.0 dB/DIV 0FFSET 0.0 dB
Model: 54147A
CURSOR
1: -61.39 dB
2: -0.05 dB
85.4978 GHz
Average: 16
START: 85.0000 GHz USER STOP: 110.000 GHz
5 GHz/DIV
401pts
LEVEL: +7.0 dBm
Average: 16
2
READOUT
1: -60.68 dBr
2: +26.40 dBr
10.7554 GHz
1
Figure 3
This return loss plot of a tunable load illustrates high
directivity and sensitivity of the measurement. No interference
from source match or source harmonic problems are evident.
Figure 4
Ultra low harmonics, sub harmonics, and spurious allow
excellent broad band measurement dynamic range and accuracy
−
duplicating performance previously available only with receiver
based instruments such as Vector Network Analyzers.
Figure 5
The plot displays 60 dB dynamic range and good isolation at both
the detector and the reflectometer source
−
allowing the true filter
characteristic to be clearly visible.
Figure 6
Note that the transmission amplitude is slightly lower at the leading
part of this filter’s passband. The Reflectometer clearly shows poor
return loss in this region. If the Reflectometer had high harmonics
or poor source match, this undesirable characteristic would be
difficult to identify.
