Model B0011E75300A00
Rev B
Typical Performance with One External 82pF Capacitor
Insertion Loss
11
82pF series capacitor on Pin 7
Port_3
10
4
0
-0.3
-0.6
-0.9
-1.2
-1.5
-1.8
-2.1
-2.4
-2.7
-3
ZO=150ꢀ [=Zout/2]
4
7
Port_1
-0.497
3
1
3
1
ZO=75ꢀ [=Zin]
R1
B0011E75300Axx
6
6
R=300ꢀ [Zout]
-0.962
-1.308
5
2
-1.232
C1
C=82pF
Port_2
ZO=150ꢀ [=Zout/2]
5
-1.661
12
9
Figure 2 The Balun with an external capacitor on the
low impedance ground pin. This improves insertion loss
and return loss in the 40-200MHz range over that of the
basic configuration. The capacitor value can be changed
some to get a slightly different performance. A series
capacitor with just pin 4 does NOT produce identical
results as the one just in series with pin 7.
-3.3
-3.6
100
1000
Frequency (MHz)
Return Loss
Amplitude Balance
82pF series capacitor on Pin 7
82pF series capacitor on Pin 7
0
-3
2
1.6
1.2
-6
-9
-10.999
-11.577
0.8
-12.417
-14.678
0.587
-12
-15
-18
-21
-24
-27
-30
-33
-36
0.4
0
0.283
-0.015
-18.631
-0.283
-0.614
-0.4
-0.8
-1.2
-1.6
-2
100
1000
100
1000
Frequency (MHz)
Frequency (MHz)
Common Mode Rejection
82pF series capacitor on Pin 7
Phase Balance (Delta 180)
82pF series capacitor on Pin 7
0
-3
20
16
12
8
-6
-9
6.305
-12
-15
-18
-21
-24
-27
-30
-33
-36
3.206
4
2.147
1.996
2.108
0
-4
-23.683
-8
-28.399
-32.098
-12
-16
-20
-29.797
1000
-34.696
100
1000
100
Frequency (MHz)
Frequency (MHz)
USA/Canada:
Toll Free:
(315) 432-8909
(800) 411-6596
+44 2392-232392
Available on Tape
and Reel for Pick and
Place Manufacturing.
Europe:
ANAREN [ ANAREN MICROWAVE ]
