JPP-21R Series
QUADRAPHASE MODULATORS
Units to 1 GHz / High Data Bandwidth / Differential ECL/TTL Compatible Drive / Hi-Rel Package
PRINCIPAL SPECIFICATIONS
Model
Number
JPP-21R-***B
JPP-21R-***B
Center
Frequency,
f
o,
MHz
10 - 200
200 - 1000
RF
Input
Bandwidth
10% of f
o
10% of f
o
Amplitude
Balance,
dB, Max.
0.5
1.0
Phase Balance
at Center, f
o
Typ. Max.
±1°
±1°
±2°
±3°
Phase Balance
at 10% Band Limits
Typ.
Max.
±2°
±3°
±4°
±5°
Insertion
Loss,
dB, Max.
6
9
For complete Model Number replace *** with desired Center Frequency, f
o
in MHz.
General Notes:
1. Units in the JPP-21R 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.
GENERAL SPECIFICATIONS
RF Impedance:
50
Ω
nom.
VSWR:
1.5:1 max.
RF Input Level:
0 dBm nom.
Data Bandwidth:
>100 MHz nom.
Data Signal Levels: Logic 1: +15 mA nom.
Logic 0: -- 15 mA nom.
Weight, nominal:
0.32 oz (9 g)
Operating Temperature:
-- 55° to +85°C
Outline of R-Size Meri-Pac™
™
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
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