M100.Q (3/13)2
pulseelectronics.com
HIGH FREQUENCY BALUN ADAPTER
For 150 Ω Fibre Channel , 100 Ω Gigabit Ethernet and 78 Ω High Speed 1553
Military/Aerospace Grade/Specialty Components
Application Notes
For More Information
Pulse North America
Headquarters
Two Pearl Buck Court
Bristol, PA 19007
U.S.A.
Tel: 215 781 6400
Fax: 215 781 6403
Pulse Europe
Zeppelinstrasse 15
71083 Herrenberg
Germany
Tel: 49 7032 7806 0
Fax: 49 7032 7806 12
Pulse China Headquarters
B402, Shenzhen Academy of
Aerospace Technology Bldg.
10th Kejinan Road
High-Tech Zone
Nanshan District
Shenzen, PR China 518057
Tel: 86 755 33966678
Fax: 86 755 33966700
Pulse North China
Room 2704/2705
Super Ocean Finance Ctr.
2067 Yan An Road West
Shanghai 200336
China
Tel: 86 21 62787060
Fax: 86 2162786973
Pulse South Asia
135 Joo Seng Road
#03-02
PM Industrial Bldg.
Singapore 368363
Tel: 65 6287 8998
Fax: 65 6287 8998
Pulse North Asia
3F No. 198, Zhongyuan Road
Zhongli City
Taoyuan County (32068)
Taiwan
Tel: 886 3 4356768
Fax: 886 3 4356823
Performance warranty of products oered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product names mentioned herein may be
trademarks or registered trademarks of their respective owners. © Copyright, 2013. Pulse Electronics, Inc. All rights reserved.
The Specialty Components Division has developed a high frequency BALUN
for test and measurement applications. Wide bandwidth and high frequency
response makes thisdevice ideal for dierential mode measurement in high
speed applications such as Fibre Channel, Gigabit Ethernet and next genera-
tion MIL-STD-1553. The BALUN allows design engineers to characterize dif-
ferential mode devices using single-ended test equipment as shown below.
1
3
2
NETWORK
ANALYZER
50
USER’S
DIFFERENTIAL
INTERFACE
150
TWINAX CABLE
PSC BALUN
P/N HFB050150
Insertion loss S21 is measured with two units connected back to back as shown.
Note 1: Correct value of S21 for each DUT will be 1/2 of the value shown in graph.
Note 2: Return loss S11 is measured on 50 ohm port with 150 ohms termination on balance port.
Typical Return Loss - S11
50 ohm Unbalanced Port
Typical Insertion Loss - S21
Two Baluns Configured Back to Back
-4 dB
1.2 GHz1.0 MHz
1.2 GHz
0 dB
.5 dB/div
-15 dB
2 dB/div
1.0 MHz
NETWORK ANALYZER
CH-1 CH-2
DUT #1 DUT #2
Frequency (MHz)
Attenuation (dB)
Frequency (MHz)
Attenuation (dB)
