Keysight 11667A
DC to 18 GHz Power Splitter
User’s and
Service Guide
Notices
CAUTION
WARNING
Copyright Notice
© Keysight Technologies 2014 - 2019
No part of this manual may be reproduced in
any form or by any means (including electronic
storage and retrieval or translation into a foreign language) without prior agreement and
written consent from Keysight Technologies as
governed by United States and international
copyright laws.
Manual Part Number
11667-90003
Edition
Edition 2, January 18, 2019
Printed in:
Printed in Malaysia
Published by:
Keysight Technologies
Bayan Lepas Free Industrial Zone,
11900 Penang, Malaysia
Technology Licenses
The hard ware and/or software described in
this document are furnished under a license
and may be used or copied only in accordance
with the terms of such license.
Declaration of Conformity
Declarations of Conformity for this product
and for other Keysight products may be downloaded from the Web. Go to http://www.key-
sight.com/go/conformity. You can then search
by product number to find the latest Declaration of Conformity.
U.S. Government Rights
The Software is “commercial computer software,” as defined by Federal Acquisition Regulation (“FAR”) 2.101. Pursuant to FAR 12.212
and 27.405-3 and Department of Defense FAR
Supplement (“DFARS”) 227.7202, the U.S.
government acquires commercial computer
software under the same terms by which the
software is customarily provided to the public.
Accordingly, Keysight provides the Software to
U.S. government customers under its standard
commercial license, which is embodied in its
End User License Agreement (EULA), a copy of
which can be found at http://www.key-
sight.com/find/sweula. The license set forth in
the EULA represents the exclusive authority by
which the U.S. government may use, modify,
distribute, or disclose the Software. The EULA
and the license set forth therein, does not
require or permit, among other things, that
Keysight: (1) Furnish technical information
related to commercial computer software or
commercial computer software documentation that is not customarily provided to the
public; or (2) Relinquish to, or otherwise provide, the government rights in excess of these
rights customarily provided to the public to
use, modify, reproduce, release, perform, d isplay, or disclose commercial computer software or commercial computer software
documentation. No additional government
requirements beyond those set forth in the
EULA shall apply, except to the extent that
those terms, rights, or licenses are explicitly
required from all providers of commercial
computer software pursuant to the FAR and
the DFARS and are set forth specifically in
writing elsewhere in the EULA. Keysight shall
be under no obligation to update, revise or
otherwise modify the Software. With respect
to any technical data as defined by FAR 2.101,
pursuant to FAR 12.211 and 27.404.2 and
DFARS 227.7102, the U.S. government
acquires no greater than Limited Rights as
defined in FAR 27.401 or DFAR 227.7103-5 (c),
as applicable in any technical data.
Warranty
THE MATERIAL CONTAINED IN THIS DOCUMENT IS PROVIDED “AS IS,” AND IS SUBJECT
TO BEING CHANGED, WITHOUT NOTICE, IN
FUTURE EDITIONS. FURTHER, TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE
LAW, KEYSIGHT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, WITH
REGARD TO THIS MANUAL AND ANY INFORMATION CONTAINED HEREIN, INCLUDING
BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE. KEYSIGHT
SHALL NOT BE LIABLE FOR ERRORS OR FOR
INCIDENTAL OR CONSEQUENTIAL DAMAGES
IN CONNECTION WITH THE FURNISHING,
USE, OR PERFORMANCE OF THIS DOCUMENT OR OF ANY INFORMATION CONTAINED
HEREIN. SHOULD KEYSIGHT AND THE USER
HAVE A SEPARATE WRITTEN AGREEMENT
WITH WARRANTY TERMS COVERING THE
MATERIAL IN THIS DOCUMENT THAT CONFLICT WITH THESE TERMS, THE WARRANTY
TERMS IN THE SEPARATE AGREEMENT
SHALL CONTROL.
Safety Information
A CAUTION notice denotes a hazard. It calls
attention to an operating procedure, practice,
or the like that, if not correctly performed or
adhered to, could result in damage to the
product or loss of important data. Do not proceed beyond a CAUTION notice until the indicated conditions are fully understood and met.
A WARNING notice denotes a hazard. It calls
attention to an operating procedure, practice,
or the like that, if not correctly performed or
adhered to, could result in personal injury or
death. Do not proceed beyond a WARNING
notice until the indicated conditions are fully
understood and met.
2 Keysight 11667A User’s and Service Guide
Safety Symbols
The following symbols on the instrument and in the documentation indicate precautions which
must be taken to maintain safe operation of the instrument.
When you see this symbol on your instrument,
you should refer to the instrument’s
instruction manual for important information.
This symbol indicates hazardous voltages.
The laser radiation symbol is marked on products
that have a laser output.
This symbol indicates that the power line switch
is ON.
Regulatory Markings
The CE mark is a registered trademark of the
European Community. This CE mark shows that
the product complies with all the relevant
European Legal Directives.
This text indicates that the instrument is an
Industrial Scientific and Medical Group 1 Class A
product (CISPER 11, Clause 4).
This symbol indicates that the instrument
requires alternating current (ac) input.
This symbol indicates that the power line switch
is OFF or in STANDBY position.
The CSA mark is a registered trademark of the
Canadian Standards Association.
Keysight 11667A User’s and Service Guide 3
Waste Electrical and Electronic Equipment (WEEE) Directive
This instrument complies with the WEEE Directive marking requirement. This affixed product label
indicates that you must not discard this electrical or electronic product in domestic household
waste.
Product category:
With reference to the equipment types in the WEEE directive Annex 1, this instrument is classified
as a “Monitoring and Control Instrument” product.
The affixed product label is as shown below.
Do not dispose in domestic household waste.
To return this unwanted instrument, contact your nearest Keysight Service Center, or visit http://
about.keysight.com/en/companyinfo/environment/takeback.shtml for more information.
Sales and Technical Support
To contact Keysight for sales and technical support, refer to the support links on the following
Keysight websites:
– www.keysight.com/find/mta
(product-specific information and support, software and documentation updates)
– www.keysight.com/find/assist
(worldwide contact information for repair and service)
4 Keysight 11667A User’s and Service Guide
Table of Contents
Safety Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Regulatory Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Waste Electrical and Electronic Equipment (WEEE) Directive . . . . . . . . . . . . . . . . . . . . 4
Product category: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Sales and Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Initial inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Storage and shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Replacing the APC-7 center contact (Option 002 only) . . . . . . . . . . . . . . . . . . . . . . 17
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Contacting Keysight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Keysight 11667A User’s and Service Guide 5
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6 Keysight 11667A User’s and Service Guide
List of Figures
Figure 1 Leveling or ratio measurement source match graph . . . . . . . . . . . . . 12
Figure 2 Typical power splitter diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 3 Simplified diagram of a network analyzer system . . . . . . . . . . . . . . . . 13
Figure 4 Three-resistor power splitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 5 11667A power splitter schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 6 Device features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Keysight 11667A User’s and Service Guide 7
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8 Keysight 11667A User’s and Service Guide
List of Tables
Table 1 11667A specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 2 Typical operating characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 3 Replaceable parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 4 Asia call center numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Keysight 11667A User’s and Service Guide 9
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10 Keysight 11667A User’s and Service Guide
General Information
The 11667A power splitter is a two-resistor type power splitter for use in network measurements
where one arm of the power splitter is used for leveling or to supply a reference signal for a ratio
measurement.
Specifications
The specifications are listed in Tab le 1. These specifications are the performance standards or
limits, against which the power splitter may be tested. The typical operating characteristics are
provided in Tab le 2. They are included as additional information only; they are not specifications.
Table 1 11667A specifications
Frequency (GHz)
DC to 4 4 to 8 8 to 18
Input SWR
Equivalent output SWR (Leveling or ratio measurement)
Output tracking (between output arms) 0.15 dB 0.20 dB 0.25 dB
[a] ≤ 1.38 for Option 002
≤1.15 ≤1.25 ≤1.45
≤1.10 ≤1.20
≤1.33
Frequency range: DC to 18 GHz
Maximum input power: +27 dBm
Connectors:
Type-N female on all ports
Option 001: Type-N male on the input and type-N female on the output ports
Option 002: Type-N female on the input and APC-7 on the output ports
Dimensions: 52mm wide x 46mm high x 21.3mm deep (2.06 in. x 1.82 in. x 0.84 in.)
Shipping weight: 0.22 kg (8 oz.)
Table 2 Typical operating characteristics
Frequency (GHz)
[a]
DC to 4 4 to 8 8 to 18
Phase tracking (between output arms), typically:
Insertion loss: 6 dB nominal (input to either output)
≤0.5° ≤1.5° ≤3.0°
≤-0.2, +0.6 dB ≤-0.2, +1.0 dB ≤-0.2, +1.8 dB
Keysight 11667A User’s and Service Guide 11
Options
CAUTION
Figure 1 Leveling or ratio measurement source match graph
Applying a signal greater than +27 dBm (0.5 Watts) may result in damage to the power splitter.
The standard 11667A power splitter is supplied with a female type-N on all three ports. The Option
001 provides a type-N male connector on the input and two type-N female connectors on the
output ports. The Option 002 is supplied with a type-N female connector on the input and APC-7
connectors on the output ports.
Description
The 11667A is a two-resistor power splitter for use in measurement systems where one arm is an
active arm. The active arm may be a leveling loop, or a reference channel of the network analyzer
for making a ratio measurement.
Power splitters used for wide-frequency coverage are usually of the resistive type. The generalized
form of a power splitter is shown in Figure 2.
Figure 2 Typical power splitter diagram
For simple power-dividing, a resistance value of 16 2/3 W in each arm will give an output
impedance of 50 W on any port, provided that all other ports are terminated in the characteristic
impedance of 50 W.
A network analyzer measurement system, as shown in Figure 3, uses the recommended
two-resistor type power splitter. Here R2 = R3 = 50 W, and R1 = 0 W. The two-resistor power
splitter, such as model 11667A, provides a better output SWR when used in leveling or in ratio
measurement applications.
12 Keysight 11667A User’s and Service Guide
Figure 3 Simplified diagram of a network analyzer system
Reference arm
Virtual
ground
Output
Virtual
ground
Reference arm
Output
When a power splitter is used in a network analyzer system, the node at the fork of the power
splitter is kept at a fixed voltage by the AGC action of the network analyzer’s reference channel.
Since this action forces the node to be held at a constant voltage, a virtual ground is present.
If a three-resistor power splitter, as shown in Figure 4, is used in leveling or ratio measurement
applications, each port will have an output impedance of 16 2/3 W to ground. This would be a 3:1
mismatch which could cause significant measurement errors.
Figure 4 Three-resistor power splitter
However, the 11667A power splitter uses two 50 W resistors, as shown in Figure 5. The network
analyzer creates a virtual ground at the fork, enabling the resistance in each output arm of the
power splitter to be a matched 50 ohms.
Figure 5 11667A power splitter schematic
Although optimized for leveling or ratio measurements when used as a coupler, the power splitter
still provides excellent frequency response tracking for direct power splitting applications with
typically <1.8:1 SWR.
Keysight 11667A User’s and Service Guide 13
Installation
p
INPUT PORT for incoming signal
OUTPUT PORTS used as exit ports for outgoing signal. Output signal is
6 dB down in power from input signal. Either port may be used as test
or reference port since power is equal in both ports.
* Typical in 50W system
Initial inspection
Inspect the shipping container for damage. If the shipping container or cushioning material is
damaged, it should be kept until the contents of the shipment have been checked mechanically
and electrically. If the contents are incomplete, or if there is mechanical damage or defects, or if
the device does not meet specifications, notify the nearest Keysight office. If the shipping container
is damaged, or the cushioning material shows signs of stress, notify the carrier as well as the
Keysight office. Keep the shipping materials for the carrier’s inspection. The office will arrange for
repair or replacement without waiting for claim settlement.
Figure 6 Device features
14 Keysight 11667A User’s and Service Guide
Storage and shipment
Environment
The splitter should be stored in a clean, dry environment. The following environmental limitations
apply to storage and shipment:
Temperature: -40 °C to +75 °C
Humidity: <95% relative
Altitude: <25,000 feet
Original packaging
If you need to ship the splitter for any reason, be sure to use the original (or comparable) packaging
materials. If the device is being returned to Hewlett-Packard for servicing, attach a tag indicating
the type of service required, return address, model number, and full serial number. Also mark the
container FRAGILE to assure careful handling. In any correspondence, refer to the instrument
model number and full serial number.
Keysight 11667A User’s and Service Guide 15
Operation
Environment
Adjustments
The operating environment should be within the following limits:
Temperature: 0 °C to +55 °C
Humidity: <95% relative
Altitude: <15,000 feet
The 11667A power splitter requires no electrical or mechanical adjustments.
16 Keysight 11667A User’s and Service Guide
Service
CAUTION
Replacing the APC-7 center contact (Option 002 only)
This contact is a small, four-pronged, spring-action contact which snaps into a recess in the center
conductor. It is normally held in place by the spring-action of the four prongs. With a magnifying
glass, examine the contact to determine if it needs replacement.
Do not remove this contact for inspection. It may be damaged by removal.
The contact should be free of burrs or wear and the prongs should be equally spaced. Push the
contact in with your fingernail and note the spring action. If the contact needs replacing, proceed
as follows:
1 Place the power splitter so that the connector face is down.
2 Tap the pin connector lightly and the contact should protrude slightly. Insert the centering pin
of the contact extractor (part number 5060-0236) with the jaws open. If this tool is not
available, an ordinary draftsman’s mechanical pencil may be used. (The end of the jaws may
have to be filed to get a good grasp at the very end.)
3 Allow the jaws of the tool to close and pull straight away from the connector without twisting.
The contact should come out with the tool. If not, repeat the process. Do not reuse the contact.
4 Insert a new contact (part number 1250-0907) with the fingernail.
Troubleshooting
Troubleshooting the 11667A power splitter usually takes advantage of the fact that the circuit
elements are split into two channels. Malfunctions will usually occur in only one channel at a time.
Therefore, malfunctions can be confirmed by reversing connections to the splitter.
Since the power splitter works to DC, an ohmmeter can be used to check the inner conductor
connections. The resistance from either output center conductor to the input center conductor
should be 50 W ±±2 W.
Ordering Information
To obtain replacement parts, contact the nearest Keysight Technologies. Table 3 lists the
replaceable parts. Do not try to replace any parts not listed.
Keysight 11667A User’s and Service Guide 17
Tab le 3 Replaceable parts
CAUTION
Part number Quantity Description
2200-0165 6 Screw: machine 4-40 x 0.312-inch Pozidriv flat head
Standard 11667A and Type-N female on Option 002
1250-0549
1250-0915
5040-0306
5020-9108
5020-9107
Model 11667A Option 001 (male Type-N input)
1250-2184
5021-1746
1250-0916
1250-0917
1250-0918
5020-9778
Model 11667A Option 002 (APC-7 connectors Only)
1250-0909
5021-1746
85130-20002
85050-20001
3
3
3
3
3
1
1
1
1
1
1
2
2
2
2
Connector Type-N
Contact: center conductor female
Insulator
Conductor: center
Conductor: outer
Retaining ring
Connector flange
Connector body Type-N
Male pin Type-N
Connector nut Type-N
Center conductor extension
Connector assembly: APC-7
Connector flange
Contact holder: center conductor
Contact: center conductor
Repair
Do not open the 11667A power splitter. Opening the 11667A power splitter voids the warranty.
Replace only the parts shown in Tab le 3. To replace these parts, proceed as follows:
Standard model 11667A and Type-N connectors on Options 001 and 002
1 Loosen and remove the two Pozidriv screws on the faulty connector. Remove the flange.
2 With a rotating motion, pull the center conductor assembly loose.
3 Use a pin vise to unscrew the two pins.
4 Replace the defective part.
5 Apply a small amount of Locktite to the threads of the contact and screw the center conductor
assembly together.
6 Push the end of the conductor assembly into the connector hole while rotating the assembly.
Do not force it on. It should slide on.
7 Complete the remainder of the assembly in reverse order of disassembly.
18 Keysight 11667A User’s and Service Guide
Option 002 (APC-7 connectors)
1 With a thin 1/2-inch open wrench, remove the outer connector assembly on the faulty
connector.
2 Loosen and remove the two Pozidriv screws. Remove the flange.
3 With a rotating motion, pull the center conductor assembly loose.
4 Use a pin vise to unscrew the two pins.
5 Replace the defective part.
6 Apply a small amount of Locktite to the threads of the contact and screw the center conductor
assembly together.
7 Push the end of the center conductor assembly into the connector hole while rotating the
assembly. Do not force it on: it should slide on.
8 Complete the remainder of the assembly in reverse order of disassembly.
Keysight 11667A User’s and Service Guide 19
Contacting Keysight
By internet, phone, or fax, get assistance with all your test and measurement needs.
Online assistance: www.keysight.com/find/assist
United States
(tel) 1 800 452 4844
New Zealand
(tel) 0 800 738 378
(fax) (+64) 4 495 8950
Latin America
(tel) (305) 269 7500
(fax) (305) 269 7599
Japan
(tel) (+81) 426 56 7832
(fax) (+81) 426 56 7840
Canada
(tel) 1 877 894 4414
(fax) (905) 282-6495
Australia
(tel) 1 800 629 485
(fax) (+61) 3 9210 5947
Tab le 4 Asia call center numbers
Country Phone number Fax number
Singapore 1-800-375-8100 (65) 836-0252
Malaysia 1-800-828-848 1-800-801664
Philippines
Thailand
Hong Kong 800-930-871 (852) 2506 9233
Taiwan 0800-047-866 (886) 2 25456723
People’s Republic of China
India 1-600-11-2929 000-800-650-1101
(632) 8426802
1-800-16510170 (PLDT subscriber only)
(088) 226-008 (outside Bangkok)
(662) 661-3999 (within Bangkok)
800-810-0189 (preferred)
10800-650-0021
(632) 8426809
1-800-16510288 (PLDT subscriber only)
(66) 1-661-3714
10800-650-0121
Europe
(tel) (+31) 20 547 2323
(fax) (+31) 20 547 2390
20 Keysight 11667A User’s and Service Guide
This information is subject to change
without notice. Always refer to the
Keysight website for the latest
revision.
© Keysight Technologies 2014 - 2019
Edition 2, January 18, 2019
Printed in Malaysia
*11667-90003*
11667-90003
www.keysight.com
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