4-5 ME7838A System Operation—Broadband Configuration
Theory Of Operation
4-10
PN: 10410-00306 Rev. F
VectorStar ME7838 Series MM
4-5
ME7838A System Operation—Broadband Configuration
This section describes the system operation of the ME7838A Broadband VNA System.
Stimulus Signal Generation
For operation in the frequencies below 54 GHz range, the MS4647A or MS4647B VNA outputs a stimulus
signal from its test port and feeds directly to the 3743A Millimeter-Wave Module via coaxial cable. The 3743A
Module then outputs the stimulus signal to the Device Under Test (DUT) via its W1 Connector test port.
For operation in frequencies 54 GHz and above, the MS4647A or MS4647B VNA outputs an RF signal to the
3739A, 3739B or 3739C Test Set.
In the test set, the RF signal is amplified. It is then routed to the Port 1 RF Output or Port 2 RF Output via a
transfer switch and fed to the 3743A Millimeter-Wave Modules.
In the 3743A Millimeter-Wave Module, the frequency of the RF signal is either doubled or tripled and then
output to the DUT.
For operation between 54 GHz and 80 GHz, the frequency of the RF signal is doubled in the module. For
operation between 80 and 125 GHz, the frequency of the RF signal is tripled.
Test Signal Processing
For operation in frequencies up to 30 GHz, the reflected/transmitted test signal received at the W1 connector
test port of the 3743A Module is then fed back to the test port of the MS4647A or MS4647B VNA for further
signal processing.
For operation above 30 GHz, the MS4647A or MS4647B VNA outputs two LO signals to the 3739A, 3739B or
3739C Test Set. The LO signals are amplified (and attenuated, if required). It is then routed to Port 1 LO
Output or Port 2 LO Output and fed to the 3743A Millimeter-Wave Modules.
In the 3743A Millimeter-Wave Module, a sample of the stimulus signal is down-converted to intermediate
frequency (IF) using the LO signal from the 3739A, 3739B or 3739C Test Set. The output is the Reference IF
signal.
The reflected/transmitted test signal received at the W1 connector test port of the 3743A module is coupled to
the test channel down-converter which converts the test signal to IF signal using the LO signal from the
3739A, 3739B or 3739C Test Set. The output is the Test IF signal.
Both the Reference and Test IF signals are then fed to the 3739A, 3739B or 3739C Test Set. The IF signals
pass through the 3739A or 3739B Test Set and are fed to the IF Inputs of the MS4647A or MS4647B VNA for
further signal processing.
Note
In the
MS4640A Series Microwave Vector Network Analyzer Maintenance Manual –
10410-00268
, refer to
Chapter 6 – Theory of Operation
for signal processing details.
In the
MS4640B Series Microwave Vector Network Analyzer Maintenance Manual –
10410-00320
, refer to
Chapter 2 – Theory of Operation
for signal processing details.
Содержание VectorStar ME7838 Series
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Страница 14: ...1 6 ME7838 Series VNA System Overview General Information 1 6 PN 10410 00306 Rev F VectorStar ME7838 Series MM ...
Страница 28: ...1 7 Recommended Test Equipment General Information 1 20 PN 10410 00306 Rev F VectorStar ME7838 Series MM ...
Страница 76: ...4 10 ME7838G System Operation Theory Of Operation 4 16 PN 10410 00306 Rev F VectorStar ME7838 Series MM ...
Страница 94: ...5 3 ALC Level Calibration Adjustment 5 18 PN 10410 00306 Rev F VectorStar ME7838 Series MM ...
Страница 176: ...A 3 ME7838G WR05 S Parameter Measurements Test Record Test Records A 4 PN 10410 00306 Rev F VectorStar ME7838 Series MM ...
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