Keysight Technologies
RF & Microwave Attenuators
Performance you
can count on
2
Applications
Keysight RF & Microwave Attenuators
Keysight Technologies, Inc. coaxial fixed and step attenuators are designed
for use in a wide variety of signal conditioning and level control applications.
Attenuators are generally used to reduce signal levels, improve matching imped-
ances of sources and loads, and measure the gain or loss of two-port devices.
*All product models listed above offer RF connector options for N(f) / SMA(f) / APC-7 except 8495D which only offer 3.5 mm (f) RF
connectors.
Coaxial Fixed Attenuators
Keysight coaxial fixed attenuators provide precise attenuation, flat frequency response and low SWR over broad frequency
range. These attenuators are available in nominal attenuations of 3, 6, 10, 20, 30, 40, 50 and 60 dB to cater to various
applications and setups.
Coaxial Fixed Attenuators
Attenuation Accuracy
Model
number
Frequency
3 dB 6 dB 10 dB 20 dB 30 dB
40 dB 50 dB
60 dB
Maxi-
mum
SWR
Maximum
input average
power (W)
Maximum
input peak
power (W)
RF
connectors
8491A DC to
12.4 GHz
0.3 0.3 0.5 0.5 1.0 1.5 1.5 2.0 1.30 2100 N (m,f)
8493A DC to
12.4 GHz
0.3 0.3 0.5 0.5 1.0 - - - 1.30 2100 SMA (m,f)
8491B DC to
18 GHz
0.3 0.4 0.6 1.0 1.0 1.5 1.5 2.0 1.50 2100 N (m,f)
8493B DC to
18 GHz
0.3 0.4 0.6 1.0 1.0 - - - 1.50 2100 SMA (m,f)
8498A DC to
18 GHz
- - - - 1.0 - - - 1.30 25 125 N (m,f)
8493C DC to 26.5
GHz
1.0 0.6 0.5 0.6 1.0 1.3 - - 1.25 2100 3.5 mm (m,f)
8490D DC to 50
GHz
1.8 1.8 1.3 1.7 1.7 2.5 - - 1.45 1100 2.4 mm (m,f)
8490G DC to 67
GHz
1.8 1.8 1.3 1.7 1.7 2.5 - - 1.45 1100 1.95 mm
Key Features
–High reliability and exceptional
repeatability reduce downtime
–Excellent RF specifications optimize
test system measurement capability
–Broad portfolio of attenuation
and connector options provide
configuration flexibility
3
Manual Step Attenuators
Keysight manual step attenuators offer fast, precise signal-level control up to 26.5 GHz. Unmatched attenuation
repeatability of less than 0.03 dB up to 5 million cycles per section ensures low measurement uncertainty. Attenuation
range of 121 dB in 1 dB step can be achieved by cascading 2 attenuators in series.
*All product models listed above offer RF connector options for N(f) / SMA(f) / APC-7 except 8495D which only offer 3.5 mm (f) RF
connectors.
Manual Step Attenuators
Model
num-
ber
Fre-
quency
Attenua-
tion range
(dB)
Attenua-
tion step
(dB)
Insertion
loss (dB)
at 0 dB
Maximum
SWR
Maximum
input aver-
age power
(W)
Maximum
input
peak
power
(W)
Operating
life
(n million
cycles/
section)
Repeatability (dB)
8494A DC to 4
GHz
0 to 11 1 0.96 1.50 1100 5 ± 0.03 dB max
8495A DC to 4
GHz
0 to 70 10 0.68 1.35 1100 5 ± 0.03 dB max
8496A DC to 4
GHz
0 to 110 10 0.96 1.50 1100 5 ± 0.03 dB max
8494B DC to 18
GHz
0 to 11 1 2.22 1.90 1100 5 ± 0.03 dB max
8495B DC to 18
GHz
0 to 70 10 1.66 1.70 1100 5 ± 0.03 dB max
8496B DC to 18
GHz
0 to 110 10 2.22 1.90 1100 5 ± 0.03 dB max
8495D DC to
26.5 GHz
0 to 70 10 3.95 2.20 1100 5 ± 0.03 dB max to 18
GHz, ± 0.05 dB max
to 26.5 GHz
4
Interconnect Kits
11716A Type-N interconnect kit
11716C SMA interconnect kit
11716D 2.9 mm interconnect kit
11716E 3.5 mm interconnect kit
11716F 2.4 mm interconnect kit
11716A/C/D/E/F interconnect kits can be used to connect any two of the Keysight 8494/95/96, 84904/8M, 84904/6L, or
84904/6K attenuators in series to achieve broader attenuation ranges with 1 dB attenuation step.
Attenuator Interconnection Kit
8494x, 8495x, 8496x 11716A /C
84904L, 84906L, Option 006, 106 11716D
84904L, 84906L, Option 101, 100 11716F
84904K, 84906K 11716E
Programmable Step Attenuators
Model
number
Frequency Attenua-
tion range
(dB)
Atten-
uation
step
(dB)
Insertion
loss (dB)
at 0 dB
Max.
SWR
Max.
input
average
power
(W)
Max.
input
peak
power
(W)
Operating
life
(n million
cycles/
section)
Repeatability (dB)
8494G DC to 4 GHz 0 to 11 1 0.96 1.50 1100 5 ± 0.03 dB max
8495G DC to 4 GHz 0 to 70 10 0.68 1.35 1100 5 ± 0.03 dB max
8496G DC to 4 GHz 0 to 110 10 0.96 1.50 1100 5 ± 0.03 dB max
8494H DC to 18 GHz 0 to 11 1 2.22 1.90 1100 5 ± 0.03 dB max
8495H DC to 18 GHz 0 to 70 10 1.66 1.70 1100 5 ± 0.03 dB max
8496H DC to 18 GHz 0 to 110 10 2.22 1.90 1100 5 ± 0.03 dB max
8495K DC to 26.5 GHz 0 to 70 10 3.95 2.20 1100 5 ± 0.03 dB max to 18 GHz, ±
0.05 dB max to 26.5 GHz
8497K DC to 26.5 GHz 0 to 90 10 2.79 1.80 1100 5 ± 0.03 dB max to 18 GHz, ±
0.05 dB max to 26.5 GHz
84904K DC to 26.5 GHz 0 to 11 1 1.86 2.00 150 5 ± 0.03 dB max
84906K DC to 26.5 GHz 0 to 90 10 1.86 2.00 150 5 ± 0.03 dB max
84907K DC to 26.5 GHz 0 to 70 10 1.40 1.90 150 5 ± 0.03 dB max
84904L DC to 40 GHz 0 to 11 1 2.40 2.00 150 5 ± 0.03 dB max
84906L DC to 40 GHz 0 to 90 10 2.40 2.00 150 5 ± 0.03 dB max
84907L DC to 40 GHz 0 to 70 10 1.80 1.90 150 5 ± 0.03 dB max
84904M DC to 50 GHz 0 to 11 1 3.00 3.00 150 5 ± 0.03 dB
84905M DC to 50 GHz 0 to 60 10 2.60 2.60 150 5 ± 0.03 dB
84908M DC to 50 GHz 0 to 65 5 3.00 3.00 1 50 5 ± 0.03 dB
Programmable Step Attenuators
Keysight programmable step attenuators offer fast, precise signal-level control up to 50 GHz, with switching time of less
than 20 ms. Unmatched attenuation repeatability of less than 0.03 dB up to 5 million cycles per section ensures low
measurement uncertainty and reduces calibration cycles when installed into test systems. Automatic GPIB/USB/LAN drive
control is achieved with the 11713B/C attenuator/switch driver.
5
Interconnect Kits continued
Attenuator type Frequency range Attenuator 1 Attenuator 2 Attentuation range Attenuntion step
Manual DC to 4 GHz 8494A 8495A 81 1
Manual DC to 4 GHz 8494A 8496A 121 1
Manual DC to 18 GHz 8494B 8495B 84 1
Manual DC to 18 GHz 8494B 8496B 121 1
Programmable DC to 4 GHz 8494G 8495G 81 1
Programmable DC to 4 GHz 8494G 8496G 121 1
Programmable DC to 18 GHz 8494H 8495H 81 1
Attenuator Sets
Sets of four coaxial fixed attenuators with attenuations of 3, 6, 10 and 20 dB are provided in a walnut accessory case.
These sets are ideal for calibration labs or where precise knowledge of attenuation and SWR is desired.
Attenuator sets Attenuation
11581A 8491A 3, 6, 10 and 20 dB
11582A 8491B 3, 6, 10 and 20 dB
11853C 8493C 3, 6, 10 and 20 dB
Related Products
11713A/B/C attenuator/switch driver
34980A multifunction switch/measurement unit
L4445A microwave switch/attenuator driver
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warranty standard on all instruments, worldwide.
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instruments are operating to specification so you can rely on accurate
measurements.
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For more information on Keysight
Technologies’ products, applications or
services, please contact your local Keysight
office. The complete list is available at:
www.keysight.com/find/contactus
Americas
Canada (877) 894 4414
Brazil 55 11 3351 7010
Mexico 001 800 254 2440
United States (800) 829 4444
Australia 1 800 629 485
China 800 810 0189
Hong Kong 800 938 693
India 1 800 112 929
Japan 0120 (421) 345
Korea 080 769 0800
Malaysia 1 800 888 848
Singapore 1 800 375 8100
Taiwan 0800 047 866
Other AP Countries (65) 6375 8100
Europe & Middle East
Austria 0800 001122
Belgium 0800 58580
Finland 0800 523252
France 0805 980333
Germany 0800 6270999
Ireland 1800 832700
Israel 1 809 343051
Italy 800 599100
Luxembourg +32 800 58580
Netherlands 0800 0233200
Russia 8800 5009286
Spain 0800 000154
Sweden 0200 882255
Switzerland 0800 805353
Opt. 1 (DE)
Opt. 2 (FR)
Opt. 3 (IT)
United Kingdom 0800 0260637
For other unlisted countries:
www.keysight.com/find/contactus
(BP-07-01-14)
06 | Keysight | RF and Microwave Attenuators - Brochure
This information is subject to change without notice.
© Keysight Technologies, 2013 - 2014
Published in USA, August 3, 2014
5989-6948EN
www.keysight.com
