Package Outline

JPM-2A & 4A Series

QUADRAPHASE MODULATORS

5 to 1000 MHz / 10% and Octave Bandwidths / High Data Bandwidth / Low Conversion Loss /

SMA

Forfurtheri

nformati

oncontact

M ERRIM AC /41 Fairfield Pl.,W estCaldw ell,NJ,07006 /201-575-1300 /FAX 201-575-0531

PRINCIPAL SPECIFICATIONS

Model

Center

Number

RF Input

JPM-2A-***B

5 - 1000 MHz

JPM-4A-***B

5 - 300 MHz

GENERAL SPECIFICATIONS

Amplitude Balance:

0.5 dB typ.,

1.0 dB max.

Phase Balance:

±2° typ., ±5° max.

Insertion Loss:

6 dB nom.

9 dB max.

RF Impedance:

50

Ω nom.

VSWR:

1.5:1 max.

RF Input Level:

0 dBm nom.

Data Modulation

Bandwidth:

DC to

Modulation Sequence

Data Ports 1,2: 0,0: ref. 0°

1,0: -- 270°

1,1:-- 180°

0,1: -- 90°

Data Signals Levels

Logic 1:

+15 mA nom.

Logic 0:

-- 15 mA nom.

Weight, nominal:

2 oz (57 g)

Operating Temp:

-- 55° to +85°C

General Notes:

1. Units in the JPM-A 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. All units in this series may be ordered with optional integrated

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.

NOTES:

1. Tolerance on 3 place decimals

except as noted.

2. Dimensions in inches over millimeters.

14Feb96