Meri-Pac

™

™ S-Package

JTP-2S Series

QUADRAPHASE MODULATORS

10 to 1000 MHz / Integrated TTL Drivers / Low Conversion Loss / Hi-Rel Hermetic Package

Forfurtheri

nformati

oncontact

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

PRINCIPAL SPECIFICATIONS

Center

RF

Amplitude

Phase Balance

Insertion

Model

Input

Balance,

@:

Loss,

VSWR

Number

MHz

Bandwidth

dB, Max.

Band Limits

dB, Max.

Max.

JTP-2S-***B

10 to 200

0.5

±2° max.

±4° max.

6

1.5:1

JTP-2S-***B

200 to 1000

1.0

±3° max.

±5° max.

9

1.5:1

GENERAL SPECIFICATIONS

Impedance:

50

Ω nom.

RF Input Level:

0 dBm nom.

Modulation Sequence

TTL Data Ports 1,2:

0,0 : ref. 0°

1,0 : +270°

1,1 : +180°

0,1 : +90°

Data Bandwidth:

DC to 5 MHz nom.

(Wider Bandwidths in

larger package)

DC Power:

+5 V @ 25 mA nom.

Weight, nominal:

0.35 oz (10 g)

Operating Temp:

-- 55° to + 85°C

NOTES:

1. Tolerance on 3 place decimals

2. Dimensions in inches over millimeters.

3. Lead dimensions apply only at body.

4. All unmarked pins are case ground.

General Notes:

1. Units in the JTP-2S series of Quadraphase Modulators are composed of two biphase modulators with TTL

drivers, 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.

3. Units in the JTP-2S series are available with center frequencies from 10 to 1000 MHz and having a minimum

bandwidth equal to 10% of the center frequency.

4. Merrimac Quadraphase Modulators comply with the relevant sections of MIL-M-28837 and may be supplied

screened for compliance with additional specifications for military applications requiring the highest reliability.

29Apr96