2 TO 8 GHz DOUBLE-BALANCED MIXER
MODELS: DM0208LW2, DM0208LA1
FEATURES
• RF/LO coverage ......... 2 to 8 GHz
• IF operation ............... DC to 2 GHz
• LO power range ......... +7 to +13 dBm
• Conversion loss .......... 7 dB typical
• LO-to-RF isolation ....... 40 dB typical
MITEQ’s DM series of mixers is constructed using double-tuned microstrip RF and LO baluns with a DC-
coupled IF structure. The construction, coupled with the hermetic packaging, provides for high inherent relia-
bility and isolation over an extremely broad frequency range. This device performs as an up- or downconverter
covering most EW bands and communication applications. This mixer is also available with medium or high forward
voltage diodes (M, H) yielding proportional changes in LO power and spurious performance.
ELECTRICAL SPECIFICATIONS
INPUT PARAMETERS
RF frequency range
RF VSWR (RF = -10 dBm, LO = +10 dBm)
LO frequency range
LO power range
LO VSWR (LO = +10 dBm)
2 to 8 GHz
2 to 8 GHz
CONDITION
UNITS
GHz
Ratio
GHz
dBm
Ratio
2
+7
3:1
MIN.
2
3:1
8
+13
TYP.
MAX.
8
TRANSFER CHARACTERISTICS
Conversion loss (IF = 100 MHz, LO = +10 dBm)
Single-sideband noise figure
Isolation – LO to RF
Isolation – LO to IF
Isolation – IF to RF
Input power at 1 dB compression
Input two-tone third-order intercept point
CONDITION
2 to 8 GHz
2 to 8 GHz
2 to 8 GHz
2 to 8 GHz
DC to 2 GHz
LO = +10 dBm
LO = +13 dBm
UNITS
dB
dB
dB
dB
dB
dBm
dBm
MIN.
TYP.
7
MAX.
8
8.5
30
20
40
30
40
0
+10
+3
+13
OUTPUT PARAMETERS
IF frequency range
IF VSWR (IF = -10 dBm, LO = +10 dBm)
CONDITION
3 dB bandwidth
UNITS
GHz
Ratio
MIN.
DC
TYP.
2:1
MAX.
2
39
DM0208LW2/A1 TYPICAL TEST DATA
VSWR
(LO = +10 dBm)
6:1
5:1
VSWR (RATIO)
ISOLATION (dB)
4:1
RF
ISOLATION
25
35
45
30
40
50
IF TO RF
LO TO IF
LO TO RF
LO
.5
2.5
4.5
6.5
8.5
10.5
3:1
2:1
1:1
.5
2.5
4.5
6.5
FREQUENCY (GHz)
8.5
10.5
0
.4
.8
1.2
FREQUENCY (GHz)
1.6
2
0
CONVERSION LOSS (dB)
4
8
12
16
20
CONVERSION LOSS (IF = 100 MHz)
IF RESPONSE (5.5 GHz FIXED LO)
(LO = +10 dBm)
CONVERSION LOSS
0
4
IF RESPONSE (dB)
8
12
16
20
10.5
SINGLE-TONE (m) RF xISOLATION
(n) LO RELATIVE SPUR LEVEL (dBc)
(IF TO LO, LO TO RF & IF FREQUENCIES,
(AVERAGE MIDBAND RF, LO,LO TO IF)
RF = -10 dBm, LO = +10 dBm)
6:1
SPUR
(m) RF x (n) LO
5:1
1
1
4:1
1
2
3:1
2
2
2:1
3
3
3
5
x
x
x
x
x
x
x
x
x
1
2
3
1
2
3
1
2
3
8
RF TEST
FREQ. (GHz)
4.5
6.32
7.24
3
4.76
5.8
2.24
3.8
4.82
11
LO TEST
FREQ. (GHz)
5.5
3.66
2.74
7
5.24
4.2
7.72
6.2
5.16
14
17
SPUR
LEVEL (dBc)
0
-38
-15
-53
-65
-50
-47
-65
-53
20
IF RESPONSE
.5
2.5
4.5
6.5
FREQUENCY (GHz)
8.5
FREQUENCY (GHz)
AVAILABLE OPTIONS
Low/high dynamic range options
3
M (LO = +16 dBm), (IP = +15 dBm typ.)
3
H (LO = +20 dBm), (IP = +22 dBm typ.)
MAXIMUM RATINGS
Specifications taken at .......................... +25°C
Operating temperature .......................... -54 to +85°C
Storage temperature ............................ -65 to +125°C
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
.330
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)
.380
TYP.
.400
.185
OPTIONAL SPACER PLATE
40
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