JPP-21S Series
QUADRAPHASE MODULATOR
Units to 3 GHz / High Data Bandwidth / Differential ECL/TTL Compatible Drive / Hi-Rel Package
PRINCIPAL SPECIFICATIONS
Model
Number
JPP-21S-***B
Center
Frequency,
f
o,
MHz
1200 - 2500
RF
Amplitude
Input
Balance at,
Bandwidth
dB, Max.
10% of f
o
1.0
Phase Balance
at Center, f
o
Typ. Max.
±2°
±5°
Phase Balance
at 10% Band Limits
Typ.
Max.
±2°
±5°
Insertion
Loss,
dB, Max.
10
For complete Model Number replace *** with desired Center Frequency, f
o
in MHz.
General Notes:
1. Units in the JPP-21S series of Quadraphase Modulators are
composed of two biphase modulators, a 90° quadrature hybrid
and an in-phase power combiner.
2. These devices are generally used in systems to generate
QPSK coded signals. The units accept two differential data
inputs each of which independently biphase modulates an RF
carrier. These are then combined to produce a quadraphase
output of 0, 90, 180 and 270 degrees. Differential drive allows
easy interface with ECL/TTL drivers.
3. Merrimac Quadraphase Modulators comply with the 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.
Outline of S-Size Meri-Pac™
™
GENERAL SPECIFICATIONS
Impedance:
VSWR:
RF Input Level:
Data Bandwidth:
50
Ω
nom.
1.5:1 max.
0 dBm nom.
>100 MHz nom.
Data Signal Levels: Logic 1: +15 mA nom.
Logic 0: -- 15 mA nom.
Weight, nominal:
Operating Temperature:
0.32 oz (9 g)
-- 55° to +85°C
Modulation Sequence
Data Ports 1, 2
0, 0
ref. 0°
1, 0
-- 270°
1, 1
-- 180°
0, 1
-- 90°
NOTES:
1. Tolerance on 3 place decimals
±
.010(.25) except as noted.
2. Dimensions in inches over millimeters.
3. Dimensions marked with * apply only at body.
4. All unmarked pins are case ground.
22Feb96
F rf t e if r to c n a t
M ERRI AC /41 Faifel Pl,W estCal el,NJ,07006 / 201-
o ur h r n o ma in o t c
M
ri d .
dw l
575-
1300 /FAX 201- 0531
575-
MERRIMAC [ MERRIMAC INDUSTRIES, INC. ]
