4 TO 8 GHz DOUBLE-BALANCED MIXER
MODELS: DM0408LW2, DM0408HW2, DM0408LA1, DMO408HA1
FEATURES
• RF/LO coverage ......... 4 to 8 GHz
• IF operation ............... DC to 2 GHz
• LO power range
L .................. +7 to +13 dBm
H .................. +15 to +20 dBm
• Conversion loss
(midband RF) ............. 5 dB typical)
• LO-to-RF isolation ....... 40 dB typical
MITEQ’s DMO408 series of mixers are constructed using new highly efficient double-tuned microstrip RF and LO
baluns with a DC-coupled IF structure. The construction, coupled with the hermetic packaging, provides for high
inherent reliability and isolation over an octave frequency range. This device performs as an up- or downconverter
covering satellite and communication applications. This mixer is also available with medium voltage diodes (M) yield-
ing proportional changes in LO power and spurious performance.
ELECTRICAL SPECIFICATIONS
INPUT PARAMETERS
RF frequency range
RF VSWR (RF = -10 dBm, LO = +10 dBm)
-L/-H (RF = -10 dBm, LO = +17 dBm)
LO frequency range
LO power range L
LO power range H
LO VSWR
TRANSFER CHARACTERISTICS
Conversion loss (IF = 100 MHz) L
H
Single-sideband noise figure L/H
Isolation – LO to RF
Isolation – LO to IF
Isolation – IF to RF
Input power at 1 dB compression L/H
Input two-tone third-order intercept point L/H
OUTPUT PARAMETERS
IF frequency range
IF VSWR (IF = -10 dBm, LO = +10 dBm)
DC to 2 GHz
LO = +10/+17 dBm
LO = +10/+17 dBm
CONDITION
3 dB bandwidth
CONDITION
LO = +10 dBm
LO = +17 dBm
CONDITION
UNITS
GHz
Ratio
Ratio
GHz
dBm
dBm
Ratio
UNITS
dB
dB
dB
dB
dB
dB
dBm
dBm
UNITS
GHz
Ratio
30
20
MIN.
4
+7
+15
1.75:1
TYP.
5
6
5.5/6.5
40
30
30
+3/+13
+10/+20 +13/+23
MIN.
DC
2.5:1
TYP.
MAX.
2
MAX.
6
7
+10
MIN.
4
2:1
2.2:1
8
+13
+20
TYP.
MAX.
8
41
DMO408LA1 TYPICAL TEST DATA
VSWR
(LO = +10 dBm)
3.5:1
3:1
VSWR (RATIO)
2.5:1
2:1
1.5:1
1:1
3.5
LO
RF
ISOLATION
20
40
ISOLATION (dB)
60
10
30
IF TO RF
LO TO RF
LO TO IF
3.5
4.5
5.5
6.5
7.5
8.5
4.5
5.5
6.5
FREQUENCY (GHz)
7.5
8.5
50
0
.2
.4
.6
IF FREQUENCY (GHz)
.8
1
0
CONVERSION LOSS (dB)
2
4
6
8
10
CONVERSION LOSS (IF = 100 MHz)
IF RESPONSE (6 GHz FIXED LO)
(LO = +10 dBm)
0
2
SINGLE-TONE (m) RF x (n) LO RELATIVE SPUR LEVEL (dBc)
(AVERAGE MIDBAND RF, LO, IF FREQUENCIES,
RF = -10 dBm, LO = +10 dBm (L), +20 dBm (H))
SPUR
RF TEST
(m) RF x (n) LO FREQ. (GHz)
1
1
1
2
2
2
3
3
3
x
x
x
x
x
x
x
x
x
1
2
3
1
2
3
1
2
3
5.5
7.2
8.3
4
5.75
7
3.17
4
6
LO TEST SPUR LEVEL (dBc)
FREQ. (GHz)
L
H
6.5
4.1
3.2
7
6.25
5
8.5
6.5
6.33
0
28
12
53
55
50
47
64
53
0
32
10
60
58
55
-75
-75
-75
IF RESPONSE (dB)
CONVERSION LOSS
4
6
8
10
IF RESPONSE
3.5
4.5
5.5
6.5
FREQUENCY (GHz)
7.5
8.5
MAXIMUM RATINGS
Specifications taken at .......................... +25°C
Operating temperature .......................... -54 to +85°C
Storage temperature ............................ -65 to +125°C
AVAILABLE OPTION
Medium range option
3
M (LO = +16 dBm), (IP = +15 dBm typ.)
OUTLINE DRAWINGS
W2 HOUSING
.800
.240
.295
.590
.200
.310
A1 HOUSING
.960
.480
OPTIONAL
SPACER PLATE
L
I
R
.450
.200
.070
.070 DIA. THRU MTG.
HOLES (4 PLACES)
.090
.205
L
I
R
.524
.660
.250
.387
.068
.098 DIA. THRU
.280
.287
TYPE SMA FIELD
REPLACEABLE FEMALE
.068
CONNECTOR
(TYP. 3 PLACES)
.537
.824
PRODUCT
LABEL AREA
.960
2-56 X .10 DEEP MTG. HOLES
(2 PLACES)
.145
.510
TYPE SMA FIELD REPLACEABLE
FEMALE CONNECTOR (TYP. 3 PLACES)
.330
.380
TYP.
.400
.185
OPTIONAL SPACER PLATE
42
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