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Low Cost Frequency Doubler
Rev. V2
CSFD25
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Features
INPUT: 10 TO 2400 MHz
OUTPUT: 20 TO 4800 MHz
INPUT DRIVE LEVEL +10 dBm (NOMINAL)
SURFACE MOUNT
Description
The CSFD25 is a passive bridge diode frequency doubler, de-
signed for use in the high volume wireless and test equipment
applications. The design utilizes Schottky bridge quad diodes and
broadband baluns to attain excellent performance. Due to the use
of high temperature solder and welded assembly processes used
internally makes it ideal for use in semi-automated and automated
assembly. Environmental screening available to MIL-STD-883,
MIL-STD-202 or MIL-DTL-28837, consult factory.
Ordering Information
Part Number Package
CSFD25 Surface Mount
Electrical Specifications: Z
0
= 50
P
in
= +10 dBm
Parameter Test Conditions Units
Typical Guaranteed
+25ºC -40º to +85ºC
SSB Conversion Loss
(max)
f
in
= 10 to 2400 MHz
dB 11.5 13.0 13.5
Suppression
Fundamental (min)
f
in
=
10 to 1000 MHz
f
in
= 1000 to 2000 MHz
f
in
=2000 to 2400 MHz
dBc
dBc
dBc
35
25
20
25
20
16
23
18
14
Third Harmonic
Suppression (min)
f
in
= 10 to 500 MHz
f
in
= 500 to 1000 MHz
f
in
= 1000 to 2400 MHz
dBc
dBc
dBc
50
40
35
40
30
25
38
28
23
Input VSWR
f
in
= 10 to 2400 MHz
2.0:1
Product Image
