Agilent 84904, 6, 7K/L
Programmable Step Attenuators
Data Sheet
performance with an attenuation
range of 0 to 90 dB in 10 dB steps.
Other models include the Agilent
84904K/L, with 0 to 11 dB of attenua- units, 35% smaller than the 8495/7
tion in 1 dB steps, and the Agilent (26.5 GHz) family, allows for easy
84907K/L, with 0 to 70 dB of attenua- integration into instruments and ATE
standing, with less than 2 dB of loss
at 26.5 GHz and only 2.4 dB at 40 GHz
(figure 1). The compact size of the
Excellent repeatability
High accuracy
Excellent reliability, long life
Features and description
• DC to 26.5 GHz, DC to 40 GHz
frequency coverage
tion in 10 dB steps.
systems.
This latest design evolution sets new
standards for size and performance.
High attenuation accuracy and low
SWR are achieved through the use of
miniature thin-film attenuation cards
composed of high-stability tantalum
nitride film on a sapphire substrate.
Insertion loss performance is out-
4
This family of step attenuators offers
three connector types. For operation
to 40 GHz, the 84904/6/7L models
offer either the 2.4 mm connector,
which is recommended for top per-
formance and for rugged and repeat-
able connections, or the 2.92 mm con-
nector, which is compatible with SMA
and 3.5 mm connectors but is more
delicate. For operation to 26.5 GHz,
the 84904/6/7K models offer the
3.5 mm connector. This connector is
compatible with SMA and 2.92 con-
nectors, but is more rugged. Each
model in the 84904/6/7K and L family
comes with two female connectors
(standard) or may be ordered with
one female and one male connector
for easy insertion into a microwave
chain or to combine the 1 dB step
• Optional calibration data
• 0 to 11 dB, 70 dB, 90 dB
• 1 dB steps, 10 dB steps
• Excellent repeatability
• High accuracy
• Excellent reliability, long life
• Exceptionally low insertion loss
These attenuators offer repeatability
of better than 0.03 dB and excellent
life (greater than 5 million switching
cycles per section).
3
84904/6L
(2.4)
Insertion
Loss
84904/6K
(1.9)
2
(dB)
(1.8)
This family of programmable step
attenuators offers coaxial measure-
ments to 26.5 GHz (K models) or to
40 GHz (L models), in a compact,
rugged design. The first model in this
family is the Agilent Technologies
84906K/L, which offers outstanding
84907L
1
(1.4)
84907K
(.8)
(.6)
0
10
20
30
40
Frequency (GHz)
Figure 1. Insertion loss