VMM-2D Series
VECTOR I&Q MODULATOR
2.5 to 6.5 GHz / High Rate Analog QPSK for MSK Systems / Excellent Phase & Ampli. Bal. / SMA
Typical Magnitude/Phase Plot at 2500 MHz
State
1
2
3
4
5
6
7
8
Data Input (mA)
I
Q
4.5
0
3.18
3.18
0
4.5
-3.18
3.18
-4.5
0
-3.18
-3.18
0
-4.5
3.18
-3.18
Ins. Loss
dB
-9.2
-9.3
-9.3
-8.8
-9.3
-9.6
-9.6
-9.0
Phase
Abs. Bal.
0
0
45.2 0.2
91.3 1.3
134.5 0.5
177.8 2.2
-135.8 0.8
-88.4 1.6
-43.7 1.3
PRINCIPAL SPECIFICATIONS
Model
Number
VMM-2D-****B
RF/LO
Center Freq.,
f
o
, GHz
2.5 to 6.5
RF/LO
Bandwidth,
MHz
10% of f
o
For complete Model Number replace ****with desired
center frequency, fo in MHz
D-Package Outline
GENERAL SPECIFICATIONS
RF Input:
Modulation Inputs:
VSWR:
Impedance:
Insertion Loss
(Below modulation Input)
:
+10 dBm nom.
0 dBm max.
2.0:1 max.
50鈩?nom.
12 dB max.
Modulation Accuracy
(measured @ 4 quadrants, 0 dBm input)
Amplitude Balance:
Phase Balance:
Weight, nominal:
Operating Temp:
1 dB
鹵
5擄
3 oz (84 g)
-- 55擄 to +85擄C
General Notes:
1. A vector modulator is used to phase modulate an
RF carrier with complex analog signals.
2. Merrimac Vector Modulators consist of a
quadrature hybrid and an in-phase power divider.
3. Units in the VMM-2D series are capable of
modulating the carrier at up to 10% of the RF
bandwidth.
4. These units comply with relevant sections of
MIL-M-28837 and may be supplied screened for
compliance with additional specifications for military
and space applications requiring the highest
reliability.
09Jul96
NOTES:
1. Tolerance on 3 place decimals
鹵
.030(.76) except as noted.
2. Dimensions in inches over mm.
F rf t e if r to c n a t
M ERRI AC /41 Faifel Pl,W estCal el,NJ,07006 / 973-
o ur h r n o ma in o t c
M
ri d .
dw l
575-
1300 /FAX 973- 0531
575-
1
