DIODE LIMITER
0.1-18 GHz
GENERAL INFORMATION
The LT se ies high speed Diode Limiters (receiver protectors) are used
r
at the input of sensiti e recei ers in order to protect them against acci-
v
v
dental b urnout caused y high levels of CW or pulsed o wer. Most mo -
b
p
d
els areb uilt i n “air free” solid dielect ic str iplin e, and can there ore handle
r
f
high values of high p wer.
o
SERIES LT
GENERAL SPECIFICATIONS
Frequen y Rang e:
c
RF Impedance:
Environment:
Operatin Temperature:
g
Connecto s:
r
0.1 to 18.0 GHz
50 Ohms
MIL-E-5400
–55 °C to +8 °C
5
SMA
Notes:
1. See Figure 1f or limited definition.
2. Limiters having higher peak and verage p wer capacity can be supplied.
a
o
3. Peak p wer specified is or 10
µ
s pulse widthf or frequencies to 2 GHz and
o
f
1
µ
s for frequencies above 2 GHz.
4. If a narr ow frequency bandwidth is required KDI/ riangle can supply a unit
T
that is elect ically optimized f or that bandwidth Mechanical dimensions will
r
.
remain the same as the standard unit, and the price will gene ally be lo wer.
r
Specify the frequency ange when orde ing a narrow bandwidth model and
r
r
a special pa t number will be assigned.
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5. To insure full limiting the applied RF p wer shoulde xceed 100 atts peak
o
w
or 30% of the maxi um peak p wer rating.
m
o
INPUT PULSE
T
1
TURN-ON TIME
T
2
RECOVERY TIME
MECHANICAL OUTLINES
Out-
line
1
2
3
4
5
A
in
[mm]
3.00[76,2]
0.80[20,3]
0.95[24,13]
0.80[20,3]
2.00[50,8]
B
in
[mm]
C
in
[mm]
D
in
[mm]
E
in
[mm]
F
in
[mm]
2.00[50,8] 2.600[66,04] 1.800[45,7] 0.50[12,7] 0.20[5,1]
0.60[15,2]
––
0.400[10,2] 0.30[7,6] 0.40[10,2]
0.75[19,1]
––
0.500[12,7] 0.50[12,7] 0.48[12,2]
0.60[15,2]
––
0.400[10,2] 0.25[6,4] 0.40[10,2]
1.38[35,0] 1.600[40,64] 1.175[29,85] 0.50[12,7] 0.20[5,1]
0.10
[2,5]
0.093
[2,36] DIA. THRU
MOUNTING HOLES
E
B
D
IN
OUT
FIG. 1
SPIKE LEAKAGE
FLAT LEAKAGE
C
0.38
[9,7]
0.38
[9,7]
TYP.
A
F
SMA
FEMALE
TYP.
T
1
T
2
ELECTRICAL PERFORMANCE
Model No.
LT-35
LT-38
LT-42
LT-44
LT-47
LT-49
LT-52
LT-55
LT-59
LT-62
LT-68
LT-76
LT-82
LT-83
Frequency
Range,
GHz
0.1-0.2
0.1-1.0
0.2-0.5
0.2-0.3
0.5-1.0
0.7-0.95
0.95-1.25
1.0-2.0
1.02-1.10
1.2-1.4
2.0-4.0
4.0-8.0
5.4-5.9
7.0-12.4
Maximum
VSWR
1.20
1.25
1.20
1.20
1.30
1.25
1.25
1.30
1.20
1.20
1.40
1.40
1.40
1.50
Maximum
Insertion
Loss, dB
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.6
0.5
0.6
0.7
1.2
1.00
1.70
Maximum
Peak
Power, kW
5.0
3.0
6.0
6.0
2.0
6.0
6.0
2.0
6.0
5.0
0.80
0.75
0.80
0.30
Maximum
Avg.
Power Watts
20
10
20
20
20
50
50
10
50
30
10
5.0
20
4.0
Maximum
Flat
Leakege, mW
50
50
50
50
50
50
50
50
50
50
50
80
50
50
Maximum
Spike
Leakage Ergs
0.10
0.10
0.10
0.07
0.10
0.07
0.07
0.10
0.05
0.07
0.10
0.10
0.05
0.07
Maximum
Maximum
Turn-on
Recovery
Time, nanosec Time, nanosec
5
5
5
5
5
5
5
5
5
5
6
5
4
5
150
150
150
150
150
150
150
150
150
150
30
30
30
30
Outline
1
1
1
1
3
5
5
4
5
5
2
2
2
2
KEY:
Inches[Millimeters] .XX ±.03 .XXX ±.010 [.X ±0.8 .XX ±0.25]
60 South Jefferson Road, Whippany, NJ 07981
Tel: 973-887-8100 • Fax: 973-884-0445
email: sales@aeroflex-kdi.com
See us on the web @ www.aeroflex-kdi.com
8-10-07
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