QUADRAPHASE MODULATORS JPM-2A & 4A Series 5 to 1000 MHz / 10% and Octave Bandwidths / High Data Bandwidth / Low Conversion Loss / SMA PRINCIPAL SPECIFICATIONS Model Number Center Frequency, fo JPM-2A-***B JPM-4A-***B 5 - 1000 MHz 5 - 300 MHz † GENERAL SPECIFICATIONS Bandwidth RF Input Amplitude Balance: 10% of fo 67% of fo Phase Balance: Insertion Loss: For complete model number replace *** with desired LO center freq, fo in MHz. 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. Package Outline 0.5 dB typ., 1.0 dB max. ±2° typ., ±5° max. 6 dB nom. 9 dB max. 50 Ω nom. 1.5:1 max. 0 dBm nom. RF Impedance: VSWR: RF Input Level: Data Modulation Bandwidth: DC to †50 MHz nom. 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 † RF Output and Data Bandwidths are typically much greater than specified. NOTES: 1. Tolerance on 3 place decimals ±.020(.51) except as noted. 2. Dimensions in inches over millimeters. 14Feb96 ForfurtherinformationcontactM ERRIM AC /41 Fairfield Pl.,W estCaldwell,NJ,07006 / 201-575-1300 /FAX 201-575-0531