SM0218LC1CD Datasheet, PDF (1/2 Pages) List of Unclassifed Manufacturers – 2 TO 18 GHz SINGLE-SIDEBAND UPCONVERTER OR I/Q MODULATOR

2 TO 18 GHz SINGLE-SIDEBAND UPCONVERTER OR I/Q MODULATOR
MODEL: SM0218LC1CD_*_ (Carrier Driven)
FEATURES
• RF output/carrier input .......... 2 to 18 GHz
• Linear modulation input ........ Up to +5 dBm
• Carrier input power ................ +10 to +16 dBm
• Sideband suppression ........... 20 dB
• Carrier rejection...................... 25 dB
• IF options:
Single sideband ...................... A, B and C
(internal hybrid)
I/Q modulator .......................... Q (separate inputs)
All modulators and SSB upconverters require that at least one of the input frequency bands (carrier or modulation)
has sufficient power to turn on the semiconductors. This model employs carrier drive. All modulators yield a frequen-
cy spectrum that utilizes both sidebands on either side of the output suppressed carrier. SSB upconverters, howev-
er, employ an internal IF 90° hybrid to yield only one RF sideband output. This is offset above or below the input LO
by the IF frequency (test data is recorded for the upper sideband only). Schottky diode (standard) modulators have
the greatest speed and bandwidths, but yield RF output powers of typically less than 0 dBm. Greater output power
can be achieved by using higher level diodes with proportional increases in carrier power. This carrier driven unit is
used when the modulation input to RF output must be linear (low harmonics). A typical application is for digital QPSK
with cosine shaped pulses (for minimum bandwidth). Many SSB upconverters also require input-to-output signal lin-
earity, thus requiring LO drive.
ELECTRICAL SPECIFICATIONS
INPUT PARAMETERS
RF carrier
RF VSWR (RF = +13 dBm, IF modulation = 0 dBm)
RF power (low-level diodes)
IF modulation frequency range (Note 3)
IF modulation power range (total I/Q)
TRANSFER CHARACTERISTICS
Conversion loss (Note 1)
Carrier suppression (RF = +13 dBm, IF modulation = +5 dBm)
Sideband suppression (Note 2)
Carrier – fundamental IF
Carrier ±2 IF, 4 IF, etc.
Carrier ±3 IF
Quadrature phase accuracy, I/Q mode (see Graph Key)
Quadrature amplitude accuracy
OUTPUT PARAMETERS
RF frequency range
RF VSWR (RF = +13 dBm, IF modulation = 0 dBm)
UNITS
GHz
Ratio
dBm
MHz
dBm
UNITS
dB
dBc
dBc
dBc
dBc
Degrees
dB
UNITS
GHz
Ratio
MIN.
2
+10
DC
Noise
MIN.
15
MIN.
2
TYP.
2:1
+13
TYP.
8
12
18
45
40
±10
±1
TYP.
2.5:1
MAX.
18
+16
500
+7
MAX.
12
MAX.
18
100 Davids Drive, Hauppauge, NY 11788 • TEL: [phone] • FAX: [phone] • www.miteq.com
C-34B/347