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Available on Tape and
Reel For Pick and Place
Manufacturing.
Model XDL09-9-204
Rev. E
Typical Performance: (@ 25
o
C on test board)
AVERAGE DELAY
The average delay is defined as the group delay of the input signal through the delay line. The lot-to-lot variation is
reflected in the plus/minus tolerance given in specifications.
Refer to Anaren Application Note AAN-232 for further information on Xinger delay lines.
Mounting Guidelines:
XDL09-9-204 Mountin
Foot
rint
Dimensions are in Inches [Millimeters]
4X .076 SQ
[1.93]
4X 50
Transmission
Line
4X .037
[0.94]
To insure proper electrical and thermal performance
there must be a ground plane with 100%
solder connection underneath the part
.848
[21.54]
1.848
[46.94]
In order for Xinger surface mount delay lines to work
optimally, there must be 50Ω transmission lines leading to
and from all of the RF ports. Also, there must be a very
good ground plane under the part with a number of plated
thru holes to ensure proper electrical performance. If any
of these conditions are not satisfied, insertion loss,
average delay and VSWR may not meet published
specifications.
When a surface mount delay line is mounted to a printed
circuit board (PCB), the primary concerns are; insuring
the RF pads of the device are in contact with the circuit
trace of the PCB and the ground plane of neither the
component nor the PCB are in contact with the RF signal.
An example of how
the PCB footprint could look is shown
below. In particular designs, the 50Ω lines need to be
adjusted to the unique dielectric coefficients and
thicknesses as well as varying pick and place equipment
tolerances.
Return Loss
-50
-45
-40
-35
-30
-25
-20
-15
-10
-5
0
600 700 800 900 1000 1100 1200
Frequency [MHz]
Return Loss [dB
Insertion Loss
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
600 700 800 900 1000 1100 1200
Frequency [MHz]
Insertion Loss [dB
