GLOBAL TECHNOLOGY REACH
EDO
Space and
Communication
Products
Commercial Products
This high performance Absorptive Low
Pass Filter approximates a 5th order Bessel
Thompson Filter with linear phase and
low return loss extending well beyond
the filter 3 dB bandwidth.
It is intended to be used in high data rate
communication systems requiring noise
bandwidth control and linear phase.
The filter is available at user defined
3 dB points with guaranteed group delay
and return loss performance for
applications up through OC-768 data rates.
PN 469582
FEATURES
5th Order Bessel-Thompson transfer
characteristics
User defined 3 dB cutoff frequencies
[(6.2, 10.6, 15, 30)GHz designs currently
available]
Extremely linear phase
Reflectionless in rejection band of filter
APPLICATIONS
High data rate systems requiring noise
bandwidth control
BER optimization
Pulse shape control
TYPICAL PERFORMANCE
Insertion Loss 0.2 dB (100 MHz)
Return Loss >15 dB (up to 3xFc)
>15 dB (up to 18 GHz)
>10 dB (up to 40 GHz)
Group Delay Variation <10 psec (p-p)
5-Pole Reflectionless Bessel Low-Pass Filters
5-Pole Reflectionless Bessel Low-Pass Filters
Typical Insertion Loss and Return Loss
5201-084D
Electronic Systems Group
455 Commack Road, Deer Park, NY 11729-4591
For Further Information: 631-595-3712
http://www.nycedo.com/edocorp/
INSERTION
RETURN
Insertion Loss dB
Insertion Loss dB
Return Loss dB
Return Loss dB
0
-1.0
-2.0
-3.0
-4.0
-5.0
-6.0
-7.0
-8.0
-9.0
-10.0
0.0
-5.0
-10.0
-15.0
-20.0
-25.0
-30.0
-35.0
-40.0
-45.0
-50.0
0
Frequency 1.0 GHz/Div
2468101214161820
Typical Group Delay
psec
Frequency 1.0 GHz/Div
02468101214161820
290.0
280.0
270.0
260.0
250.0
240.0
230.0
220.0
210.0
200.0
190.0
