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Agilent U9391C/F/G

Comb Generators

U9391C (10 MHz to 26.5 GHz)

U9391F (10 MHz to 50 GHz)

U9391G (10 MHz to 67 GHz)

Technical Overview

Key Features

• Excellent amplitude and phase flatness enable it to be

used as a precision calibration phase reference standard

for the NVNA

• NIST referenced phase calibration guarantees a reliable

reference to international standards

• Embedded calibration data can be easily accessed via the

plug-and-play USB interface

• The USB interface facilitates frequency divider control

and calibration data retrieval via the PNA-X

• Rugged 1.85-mm, 2.4-mm, and 3.5-mm bulk-head connec-

tors guarantee high repeatability throughout multiple

connects and disconnects

• Sine to square wave converter provided as standard acces-

sory (U9391F/G only) ensures the comb generator functions

at its optimum level for output frequencies above 26.5 GHz

• Handgrip (U9391G only) designed for better gripping and

as heat insulator for user handling

Summary of content (10 pages)

PAGE 1
Agilent U9391C/F/G Comb Generators U9391C (10 MHz to 26.
PAGE 2
Description The U9391C/F/G comb generators were developed to provide precision phase calibration, referenced to the National Institute of Standards and Technology (NIST) standard, for non-linear measurements using the PNA-X nonlinear vector network analyzer (NVNA) 1. NVNA component characterization software converts a 4-port PNA-X with Option 510 into an innovative, high-performance, non-linear network analyzer which uses U9391C/F/G comb generators as a precision phase calibration standard.
PAGE 3
Applications Network analyzer compatibility Comb generator and PNA-X configurations The U9391C comb generator is controlled by the N5242A 26 GHz PNA-X network analyzer via a USB connection (options required: 400, 419, 080, 510). The U9391F comb generator can be used with the N5245A 50 GHz PNA-X network analyzer via USB connection (options required: 400, 419, 080, 510).
PAGE 4
Alternative configuration with squaring unit If a signal generator is not available, the 10 MHz reference output on the back panel of the PNA-X can be used as a signal source. However, the U9391-60009 sine to square wave converter is needed as the comb generator will not function at its optimum level for output frequencies above 26.5 GHz, with a sine wave input of less than 100 MHz. Therefore, U9391-60009 is included as a standard accessory for U9391F and U9391G.
PAGE 5
Options Option FFF – female (output port) Output connectors Option FFM – male (output port) Specifications 1 Specifications refer to the performance standards or limits against which the U9391C/F/G comb generators are tested. Typical characteristics are included for additional information only and they are not speciﬁcations. These are denoted as “typical”, “nominal” or “approximate” and are printed in italic.
PAGE 6
Mechanical Dimensions Speciﬁcations Input Output Trigger U9391C/F 0.370 kg Pin Depth Net weight U9391C/F/G 0 to -0.0508 mm (0 to -0.0020”) 0 to -0.0508 mm (0 to -0.0020”) 0 to -0.1270 mm (0 to -0.0050”) U9391G 0.435 kg Physical weight of U9391C/F/G Mechanical dimension for U9391C Mechanical dimension for U9391F Mechanical dimension for U9391G Mechanical dimension for U9391-60009 Squaring circuit for U9391F/G Mechanical dimension for cable U9391-20013 Note: The 87205-20006 can also be used.
PAGE 7
Typical Performance Figure 2. U9391C/F pulse 195 190 Phase (deg) 185 180 175 170 165 160 0 5 10 15 20 25 Freq (GHz) Figure 3. U9391C Comb Generator Phase at 10 MHz PRF 210 200 Phase (deg) 190 180 170 160 150 0 5 10 15 20 25 Freq (GHz) Figure 4.
PAGE 8
Typical Performance continued 220 210 200 Phase (deg) 190 180 170 160 150 140 0 5 10 15 20 25 30 35 40 45 50 55 60 65 Freq (GHz) Figure 5. U9391G Comb Generator Phase at 10 MHz PRF -60 -65 Output Power (dBm) -70 -75 -80 -85 -90 0 5 10 15 20 25 Freq (GHz) Figure 6. U9391C Comb Generator Output Power at 10 MHz PRF -60 -65 Output Power (dBm) -70 -75 -80 -85 -90 -95 -100 0 1.
PAGE 9
Typical Performance continued -50 Output Power ( dBm) -60 -70 -80 -90 -100 -110 0 5 10 15 20 25 30 35 40 45 50 55 60 65 Freq (GHz) Figure 8. U9391G Comb Generator Output Power at 10 MHz PRF Ordering Information Product 1 U9391C 26.5 GHz Comb Generator 1 U9391F 50 GHz Comb Generator 1 U9391G 67 GHz Comb Generator Connector options There are two connector options available for the Agilent U9391C/F/G comb generator.
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