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HP 85106D mm-Wave System
Operation
System Description
System Description
The HP 85106D mm-wave network analyzer is configured for wide dynamic
range S-parameter measurements of waveguide components. This system
allows automatic switching for all four S-parameters. This makes it
unnecessary to manually disconnect and reverse the device during the
measurement process. Figure 2-1 on page 2-3 shows a simplified block
diagram of this system applicable to all waveguide bands. The HP 85106D
system consists of:
•
One HP 8510C
•
Two sources (one source provides the RF (stimulus) signal and the
second source provides the Local Oscillator (LO) signal)
•
One band-independent HP 85105A mm-wave test set controller
•
Pair of band-dependent HP 85104 Series mm-wave test set modules that
cover:
Q-band (33 GHz to 50 GHz)
U-band (40 GHz to 60 GHz)
V-band (50 GHz to 75 GHz)
W-band (75 GHz to 110 GHz)
This system brings a new level of convenience to mm-wave S-parameter
measurements by integrating the necessary amplifiers, frequency multipliers
and signal separation devices into the test set controller and test set modules.
The system then provides a large work surface to position the modules for
ease of use. Precision calibration standards in the HP 11644 Series
mm-wave calibration kit permit full use of all built-in HP 8510 accuracy
enhancement (error corrected) models.
The HP 8510C uses its multiple source control feature over the system bus to
tune both the RF and the LO sources over the entire frequency sweep. All
system functions, from setting up the measurement frequencies to
calibration and measurement are controlled directly from the HP 8510C
front panel. The measurement results are displayed on the HP 8510 CRT.
Stimulus for the device under test is generated using the synthesized RF
source followed by a power amplifier and a switch in the test set controller.
This RF is routed to either port 1- test set module for forward measurements,
or to port 2 test set module for reverse measurements. Components in the
test set module provide frequency multiplication, and signal separation for
sampling the incident, reflected, transmitted signals, and the harmonic
mixers to achieve the first IF conversion to 20 MHz.
Summary of Contents for 85106D
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Page 117: ...4 24 HP 85106D mm Wave System Service and Troubleshooting Check Unratioed Power Levels ...
Page 139: ...5 22 HP 85106D mm Wave System HP 85104A Test Set Module Troubleshooting Procedures ...
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